Generac Power Systems GH-410 Owner's manual

Brand: Generac Power Systems

Model: GH-410

Type: Owner's manual

Owner’s Manual

FOR THE NEAREST AUTHORIZED SERVICE CENTER, CALL 1-800-333-1322



This symbol points out important safety instructions which, if not followed, could endanger the personal

safety and/or property of others. Read and follow all instructions in the manual before attempting to

operate this unit.

Model GH-410

13/15 HP

• Safety

• Assembly

• Operation

• Maintenance

• Troubleshooting

• Warranty

READ THIS MANUAL THOROUGHLY

If any portion of this manual is not understood, con-

tact the nearest Generac Authorized Dealer for start-

ing, operating and servicing procedures.

Throughout this publication, and on tags and decals

affixed to the engine, DANGER, WARNING, CAUTION

and NOTE blocks are used to alert personnel to spe-

cial instructions about a particular operation that

may be hazardous if performed incorrectly or care-

lessly. Observe them carefully. Their definitions are

as follows:

DANGER

After this heading, read instructions that, if not

strictly complied with, will result in serious personal

injury, including death, or property damage.

After this heading, read instructions that, if not

strictly complied with, may result in personal injury

or property damage.

After this heading, read instructions that, if not

strictly complied with, could result in damage to

equipment and/or property.

NOTE:

After this heading, read explanatory statements

that require special emphasis.

These safety warnings cannot eliminate the hazards

that they indicate. Common sense and strict compli-

ance with the special instructions while performing

the service are essential to preventing accidents.

Four commonly used safety symbols accompany the

Danger, Warning and Caution blocks. The type of

information each indicates follows:



This symbol points out important safety infor-

mation that, if not followed, could endanger

personal safety and/or property of others.



This symbol points out potential explosion haz-

ard.



This symbol points out potential fire hazard.



This symbol points out potential electrical shock

hazard.

The operator is responsible for proper and safe use

of the equipment. The manufacturer strongly recom-

mends that the operator read this Owner's Manual

and thoroughly understand all instructions before

using this equipment. The manufacturer also strong-

ly recommends instructing other users to properly

start and operate the unit. This prepares users to

operate the equipment in an emergency.



RULES FOR SAFE OPERATION

Study these RULES FOR SAFE OPERATION carefully

before operating or servicing this equipment. Become

familiar with the OWNER’S MANUAL and with the

engine. The engine can operate safely, efficiently and

reliably only if it is properly operated and main-

tained. Many accidents are caused by failing to follow

simple and fundamental rules or precautions.

The manufacturer cannot anticipate every possible

circumstance that might involve a hazard. The warn-

ings in this manual and on tags and decals affixed to

the equipment, are therefore, not all-inclusive. If using

a procedure, work method or operating technique

the manufacturer does not specifically recommend,

ensure that it is safe for others. Also make sure the

procedure, work method or operating technique uti-

lized does not render the engine to be unsafe.

DANGER



Do not tamper with the engine governed speed.

High operating speeds are dangerous and

increase the risk of personal injury or damage

to the equipment. Operating at low speeds with

heavy load may shorten the engine’s life.

BEFORE OPERATING

• Gasoline is highly FLAMMABLE and its vapors are

EXPLOSIVE. Do not permit smoking, open flames,

sparks or heat in the area while handling gasoline.

Avoid spilling gasoline on a hot engine. Comply

with all of the laws regulating storage and handling

of gasoline.

• Store gasoline and other fuels only in containers

designed and approved for the storage of such

materials.

• Pressure can build up in the fuel tank. Loosen

the fuel tank slowly to relieve any pressure in the

tank.

• Add gasoline and other fuels in a clean, well-ven-

tilated area. Wipe up any spilled gasoline immedi-

ately. If gasoline has been spilled, let it dry com-

pletely before starting the engine.

• Do not overfill the fuel tank. Always allow room for

fuel expansion. If the tank is overfilled, the fuel can

overflow onto a hot engine and cause a FIRE or an

EXPLOSION.

• Allow at least two (2) feet of clearance on all sides

of the engine, even while operating outdoors, or the

engine could be damaged.

• Thoroughly inspect the engine for loose or dam-

aged parts before each use. Do not use the engine

until adjustments or repairs are made.

• Check the oil level in the engine before each use.

• Inspect the engine periodically. Repair or replace

all damaged or defective parts immediately.

• Inspect fuel system frequently for leaks or damage.

Repair or replace any damaged or leaking compo-

nent immediately. Never attempt to change, alter

or modify the engine fuel system in any way that

might affect safety or compliance with applicable

codes and standards.

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Table of Contents

GH - 410 Engine

WHILE OPERATING

• This engine was designed and manufactured for

specific applications. Do not attempt to modify the

equipment or use it for any application for which

it was not designed.

• Engine exhaust gases contain DEADLY carbon

monoxide gas. This dangerous gas, if breathed in

sufficient concentrations, can cause unconscious-

ness or even death. Operate this equipment only

in the open air where adequate ventilation is avail-

able.

• Do not insert any object through the cooling slots

of the engine. This could damage the equipment or

injure yourself.

• Do not operate the engine faster than the speed

necessary to operate the equipment. Do not run

the engine at high speed when not operating the

equipment.

• This engine requires an adequate flow of cooling

air for its continued proper operation. Never oper-

ate the equipment inside any room or enclosure

where the free flow of cooling air into and out of

the equipment might be obstructed. Without suffi-

cient cooling air flow, the engine quickly overheats,

damaging the engine or nearby property.

• Do not smoke around the engine. Wipe up any

fuel or oil spills immediately. Never leave oily or

fuel soaked rags around the engine. Keep the area

around the engine clean and free of debris.

• Keep hands, feet, clothing, etc., away from moving

parts of this engine.

• Never operate the engine (a) in the rain; (b) in any

enclosed compartment; (c) if the engine speed

changes; (d) if the engine sparks; (e) if flame or

smoke is observed while the engine is running.

• Never work on this engine or handle any electri-

cal device while standing in water, while barefoot,

or while hands or feet are wet. DANGEROUS

ELECTRIC SHOCK will result.



Rules For Safe Operation.......

Inside Front Cover

Read This Manual Thoroughly ........................ IFC

Rules For Safe Operation ................................ IFC

Before Operating ............................................. IFC

While Operating.................................................. 1

Section 1 – General Information .................. 2

Service Information ............................................ 2

Oil and Fuel Information .................................... 2

Recommended Oil Type ................................ 2

Recommended Fuel Type .............................. 2

Engine Emission Compliance Period ............ 2

Section 2 – Operation ..................................... 3

Operation and Maintenance ............................... 3

Before Starting the Engine ................................. 3

Checking Engine Oil ..................................... 3

Adding Engine Oil ........................................ 3

Adding Fuel .................................................. 3

Starting the Engine ............................................ 3

Stopping the Engine ........................................... 4

Low Pressure Shutdown System ........................ 4

Initial Startup ............................................... 4

Sensing Low Pressure .................................. 4

Restarting the Engine ................................... 4

Section 3 – Maintenance ................................ 4

General Maintenance Recommendations ............ 4

Checking the Oil Level .................................. 4

Changing the Oil and Oil Filter ..................... 4

Servicing the Air Cleaner .............................. 5

Replacing the Spark Plug ............................. 6

Cleaning the Spark Arrestor Screen ............. 6

Service and Adjustments .................................... 7

Engine Speed ............................................... 7

Carburetor Adjustments ............................... 7

Checking/Adjusting Valve to Rocker Arm

Clearance ..................................................... 7

Maintenance Schedule ........................................ 8

Storage Instructions ........................................... 8

Other Storage Tips ....................................... 8

Specifications ..................................................... 9

Service Parts ...................................................... 9

Section 4 Warranty .........................................10

The engine exhaust from this product

contains chemicals known to the state

of California to cause cancer, birth

defects or other reproductive harm.

WARNING:



This product contains or emits chemicals

known to the state of California to cause

cancer, birth defects or other reproductive harm.

WARNING:



This engine meets the 1998 and later California

emissions regulations. To ensure that the engine

continues to meet these regulations, refer to the

following information and instructions in this

owner’s manual.

When ordering engine components, provide the

authorized service dealer with the engine identifica-

tion number, which is located on the engine identifi-

cation decal. See the illustration below for the loca-

tion of the decal.

OIL AND FUEL INFORMATION

NOTE:

Be sure to read these instructions carefully

before attempting to start or operate this

equipment. Using old or improper oil or fuel

can cause engine damage.



Any attempt to crank or start the engine before

it has been properly serviced with the recom-

mended oil may result in engine damage.

RECOMMENDED OIL TYPE

Using the proper type and weight of oil in the crank-

case is extremely important. Check the oil before

each use and change the oil regularly. Failure to use

the correct oil, or using dirty oil, can cause prema-

ture engine wear and failure.

Use only high quality detergent oil rated with API ser-

vice classification SF, SG or SH. The recommended

oil weights include the following:

• During summer months: SAE 30. An acceptable

substitute is SAE 10W-30.

• During winter months: SAE 5W-30 or 0W-30. DO

NOT USE SAE 10W-40.

The crankcase oil capacity is about 51 oz. (1500 ml)

with the oil filter. Without the filter, the oil capac-

ity is 46 oz. (1360 ml). Use no special additives.

Make sure that the unit is level when filling with oil.

DO NOT OVERFILL.

RECOMMENDED FUEL TYPE

Use clean, fresh, regular UNLEADED gasoline with

this engine.



Do not overfill the fuel tank. Always allow room

for fuel expansion.



Never fill the fuel tank indoors. OR when the

engine is running or hot. Do not light a cigarette

or smoke when filling the fuel tank.

ENGINE EMISSION COMPLIANCE PERIOD

For nonhandheld engines: The Emissions Compliance

Period referred to on the Emissions Compliance label

indicates the number of operating hours for which

the engine has been shown to meet Federal emission

requirements.

For engines less than 225 cc displacement, Category

C = 125 hours, B = 250 hours, and A = 500 hours.

For engines 225 cc or more, Category C = 250 hours,

B = 500 hours, and A = 1000 hours.



Section 1 — General Information

GH - 410 Engine

SERVICE INFORMATION

Service on this engine within and after the warranty

period can be performed by any authorized service

dealer. Service technicians are factory trained and

capable of handling all service needs.

When contacting an authorized service dealer or the

factory about parts and service, always supply the

complete model number and serial number of the

unit as given on its data plate decal.

The warranty for this engine are included in the

owner’s manual.

Generac Corporation

Eng. Identif. No. XXXXXX

Displacement XXXXXX

Decal

Section 2 — Operation

GH - 410 Engine

OPERATION AND MAINTENANCE

It is the owner’s/operator's responsibility to perform

all safety checks; to make sure that all maintenance

for safe operation is performed promptly; and to have

the engine checked by an authorized dealer periodi-

cally. Normal maintenance service and replacement

of parts are the responsibility of the owner/operator

and, as such, are not considered defects in materials

or workmanship within the terms of the warranty.

Individual operating habits and usage contribute to

the need for maintenance service.

Proper maintenance and care of the engine assures a

minimum number of problems and keeps the oper-

ating expenses at a minimum. See the authorized

dealer/distributor for service aids and accessories.

BEFORE STARTING THE ENGINE

Perform the following tasks before trying to start the

engine:

CHECKING ENGINE OIL

1. Check the engine oil level before starting the

engine each time after the initial start. If the oil

level is below the point of overflowing, or below

the top hatch mark, fill to the proper level (Figure

1).

ADDING ENGINE OIL

1. Remove the yellow oil fill cap from the crankcase

(Figure 1).

2. If equipped with a dipstick, add engine oil until

the oil level registers to the top of the hatched

area.

ADDING FUEL

1. Fill the fuel tank using clean, fresh UNLEADED

gasoline.

Figure 1 - Oil Fill Cap and Dipstick



STARTING THE ENGINE

1. Open the fuel shut-off valve, if so equipped.

2. If the unit is equipped with the IDLE/CONTROL

feature, locate the IDLE/CONTROL ON/OFF

SWITCH on the control panel, and set it to the

OFF (O) position.

3. Locate the RUN/STOP SWITCH (Figure 2) next to

the engine cylinder head and push it to RUN.

Figure 2 - Run/Stop Switch

Run/Stop Switch

Low Oil Light

If the engine is equipped with a choke, use the

following instructions:

1. Place the choke lever in the FULL CHOKE

POSITION (Figure 3) by sliding it to the left

(towards the valve cover), in the direction indi-

cated by the arrow.

Figure 3 - Choke Position

Choke Lever

2. Grasp the recoil handle (Figure 4) and pull it

slowly until slight resistance is felt, then PULL

QUICKLY.

A. If the engine FAILS TO START, go to Step 3.

B. If the engine STARTS, go to Step 4.

Oil Fill

Cap

Figure 4 - Recoil Handle

Recoil Handle

3. Move the choke lever to the HALF CHOKE

POSITION, and pull the recoil handle (Figure 4)

two (2) times.

• If the engine STILL FAILS TO START, repeat

Steps 1-3.

4. Move the choke lever to the RUN POSITION by

sliding it to the right (away from the valve cover

and under the arrow).

5. Allow the engine to warm up for two (2) minutes

before using the equipment.

STOPPING THE ENGINE

1. Remove the load on the engine, and let it run for

30 seconds.

2. Turn off the engine by moving the RUN/STOP

SWITCH to the STOP position.

3. Close the fuel shut-off valve, if so equipped.

LOW PRESSURE SHUTDOWN SYSTEM

The engine is equipped with a low oil pressure sensor

that shuts down the engine should the oil pressure

drop below 8 psi. If the engine stops by itself, check

the engine oil and gasoline levels before restarting.

INITIAL STARTUP

A delay built in the low oil pressure sensor allows oil

pressure to build during starting. The delay allows

the engine to run for about 10 seconds before sensing

oil pressure.

SENSING LOW PRESSURE

If the system senses low oil pressure during opera-

tion, the engine shuts down. If the unit is equipped,

the low oil light comes ON as the unit shuts down.

However, once the engine stops rotating, this light

will go OFF.



RESTARTING THE ENGINE

If attempting to restart the engine within five (5) sec-

onds after it shuts down, the engine may NOT start.

The system needs 5 to 10 seconds to reset.

NOTE:

If an attempt has been made to restart the

engine after a shutdown, and the low oil pres-

sure has not corrected, the engine will run for

about 10 seconds before stopping.

GENERAL MAINTENANCE

RECOMMENDATIONS

The owner/operator is responsible for making sure

that all periodic maintenance tasks are completed on

a timely basis; that all discrepancies are corrected;

and that the equipment is kept clean and properly

stored. Never operate a damaged or defective engine.



Disconnect the spark plug wire from the spark

plug, and place the wire where it cannot come

in contact with the spark plug before working

on this engine.

CHECKING THE OIL LEVEL

See the BEFORE STARTING THE ENGINE section

on page 3 for information on checking the oil level.

The oil level should be checked before each use, or

at least every eight (8) hours of operation. Keep the

oil level maintained.

CHANGING THE OIL AND OIL FILTER

The engine may be equipped with an oil filter. Change

the oil and filter after the first eight (8) hours of

operation. Change the oil and oil filter (if so equipped)

every 100 hours thereafter. If using this engine

under dirty or dusty conditions, or in extremely hot

weather, change the oil more often.

Use the following instructions to change the oil while

the engine is still warm:

1. Clean the area around the oil drain plug, remove

the plug and drain the oil completely into a suit-

able container (Figure 5).

NOTE:

Placing the engine on a flat surface will allow

complete drainage. Tipping the engine towards

the drain plug will not allow complete drain-

age.



Section 3 — Maintenance

GH - 410 Engine

Figure 5 — Oil Filter and Drain Plug

2. When the oil is drained, install and tighten the oil

drain plug.

3. If the engine is equipped with an oil filter, use

the following instructions:

A. Place a suitable container beneath the oil

filter and turn the filter counterclockwise to

remove the filter.

B. Coat the gasket of a new filter with engine oil.

Turn the new filter clockwise until the gasket

contacts the filter adapter, then tighten an

additional 3/4 turn.

4. Remove the oil fill plug and insert a clean funnel

into the plug opening. Fill the crankcase with the

recommended oil. The crankcase oil capacity is

about 46 oz. (1350 ml) without the oil filter. With

the filter, the oil capacity is 51 oz. (1500 ml).

POUR SLOWLY.

5. When the crankcase is filled to the proper level,

install and tighten the oil fill plug. Start engine to

fill oil filter, recheck/correct oil level.

SERVICING THE AIR CLEANER

This engine’s air cleaner is one of the most important

areas to maintain. The engine will not run properly

and may get damaged if it is run with a dirty air

cleaner system.

Clean or replace the paper air filter (Figure 6) every

50 hours of operation or once a year, whichever

comes first. Clean or replace the filter more often if

the engine is operated under dusty or dirty condi-

tions. Clean the foam pre-filter every 25 hours of

operation, or sooner under dusty or dirty condi-

tions.





Never run this equipment without the complete

air cleaner system installed on the engine. This

could result in premature wear to the engine.

Use the following instructions to clean or replace

the air cleaner components.

1. Loosen the two screws on the air cleaner cover.

Remove the air cleaner cover (Figure 6).

Figure 6 - Removing the Air Cleaner Cover

Foam Pre-filter

may stick to cover.

2. Remove the paper air filter and the foam pre-fil-

ter from the air cleaner cover (Figure 7).

Figure 7 - Air Cleaner Components

3. To clean or replace the foam pre-filter:

A. Wash the pre-filter in soapy water.

B. Squeeze the pre-filter dry with a clean cloth.

DO NOT TWIST.

NOTE:

Section 3 — Maintenance

GH - 410 Engine

Oil Filter

Drain Plug

If the filter is too dirty, replace it with a new

one. Dispose of the old filter properly.

C. Apply enough clean engine oil to saturate the

pre-filter.

D. Wrap the pre-filter in a clean dry cloth and

squeeze out the excess oil. DO NOT TWIST.

Set the pre-filter aside.

4. To clean or replace the paper air filter:

A. Clean the air filter by tapping it gently on a

solid surface.

NOTE:

If the filter is too dirty, replace it with a new

one. Dispose of the old filter properly.

5. Clean the air cleaner cover.

6. Insert the pre-filter into the cover, then the paper

air filter (see Figure 7).

7. Reinstall the air cleaner cover and tighten the two

(2) screws (see Figure 6).

REPLACING THE SPARK PLUG

Use a Champion RC14YC spark plug or equivalent.

The correct air gap is 0.76mm (0.030 in.). Replace

the plug every 100 hours of operation or once each

year, whichever comes first. This will help the engine

to start easier and run better.

1. Stop the engine and pull the spark plug wire off

of the spark plug.

2. Clean around the spark plug and remove it from

the cylinder head.

3. Set the spark plug gap (Figure 8) to 0.76mm

(0.030 in.). Install a correctly gapped spark plug

into the cylinder head.

Figure 8 - Setting Spark Plug Gap



CLEANING THE SPARK ARRESTOR SCREEN

The engine exhaust muffler has a spark arrestor

screen. Inspect and clean the screen every 100

hours of operation or once each year, whichever

comes first.

NOTE:

If using the engine on any forest-covered,

brush-covered or grass-covered unimproved

land, it must have a spark arrestor. The spark

arrestor must be maintained in good condition

by the owner/operator.

Clean and inspect the spark arrestor screen as fol-

lows:

Inspect the screen and replace if it is torn, perforated

or otherwise damaged (see Steps 1-4 below). DO NOT

USE a defective screen. If the screen is not damaged,

clean it with a commercial solvent.

If the spark arrestor is found to be damaged or defec-

tive, replace it as follows:

1. Remove the four (4) screws that connect the heat

shield to the muffler (Figure 9).

2. Remove the four (4) screws that attach the spark

arrestor screen (Figure 9).

3. Replace damaged screen with new screen

(Part No. 083083).

4. Reattach the screen and the heat shield with the

four (4) screws. Reinstall the heat shield to the

muffler with the four (4) screws.

Figure 9 - Spark Arrestor



Section 3 — Maintenance

GH - 410 Engine

SET PLUG GAP AT 0.76 mm

(0.030 inch)

Spark Arrestor

Screen 83083

SERVICE AND ADJUSTMENTS

ENGINE SPEED



The maximum engine speed was properly set

at the factory. Do not attempt to change this

setting. Operating the engine at high engine

speeds is dangerous and increases the risk of

personal injury or damage to the equipment.

If the engine is running too fast , take it to an

authorized service center for repair and adjust-

ment. CHANGING THE ENGINE’S MAXIMUM

GOVERNED SPEED WILL VOID THE ENGINE

WARRANTY.



Operating the engine at low engine speeds

with heavy loads may shorten the engine’s life.

Do not operate the engine below half throttle

except for idling.

The engine runs at a constant speed. This constant

operating speed is maintained by a mechanical, fly-

weight type, fixed speed governor. DO NOT try to

adjust the governed speed setting for the following

reasons:

• Operating the engine at high engine speeds is dan-

gerous and increases the risk of personal injury or

damage to the equipment.

• Operating the engine at low engine speeds with

heavy loads may shorten the engine’s life.

CARBURETOR ADJUSTMENTS

The carburetor of the engine is pre-set at the factory.

The carburetor should not be tampered with because

this will VOID THE EMISSION CONTROL SYSTEM

WARRANTY. If problems occur and the engine is

used at an altitude in excess of 5000 feet, contact the

nearest authorized dealer regarding high altitude set-

ting changes.

CHECKING/ADJUSTING VALVE TO ROCKER

ARM CLEARANCE



Without proper valve lash the engine may

require extreme force during starting. This can

be dangerous to the operator during manual

(pull) starts. Improper valve lash may also result

in premature wear of the engine.

After the first 50 hours of operation, remove the

rocker cover and check the valve to rocker arm clear-

ance.



When adjusting the clearance, the engine should be at

room temperature, and the piston should be at Top

Dead Center (TDC) of its compression stroke (both

valves are closed). The correct clearance is 0.05-

0.1mm (0.002-0.004 in.). Check and adjust the valve

to rocker arm clearance as follows:

1. Remove spark plug to avoid accidental starting.

2. Remove the four (4) screws from the rocker cover

(Figure 10).

3. Remove the rocker cover and rocker cover gas-

ket.

Figure 10 - Removing the Rocker Cover

4. Rotate the engine using the recoil until the engine

is at top dead center. This can be determined

by watching the piston movement through the

spark plug hole. Rotate the engine until the piston

reaches its highest point. Both valves should now

be fully extended.

5. Check the valve clearance before making any

adjustments.

6. If the clearance is incorrect, loosen the rocker

arm jam nut. Using an allen wrench to turn the

pivot ball stud, check the clearance between the

rocker arm and the valve stem with a flat feeler

gauge (Figure 11).

Figure 11 - Adjusting Valve to Rocker Arm

Clearance

Section 3 — Maintenance

GH - 410 Engine

7. When the valve clearance is correct, hold the

pivot ball stud with the allen wrench and tighten

the rocker arm jam nut. Torque the jam nut to

19.7 N-m (175 in-lb). After tightening the jam nut,

recheck the valve clearance to make sure it did

not change (see Figure 11).

8. Reinstall the rocker cover gasket, rocker cover

and the four (4) screws (see Figure 10).

9. Reinstall the spark plug.

STORAGE INSTRUCTIONS

This engine should be started at least once a week

and run for at least 30 minutes. If this cannot be

done and the equipment must be stored for more

than 30 days, use the following guidelines to prepare

it for storage.



Never store the engine with fuel in the tank

indoors or in enclosed, poorly ventilated areas,

where fumes can reach an open flame, spark

or pilot light as on a furnace, water heater, or

clothes dryer.

1. Run the engine for about five (5) minutes to warm

up.

NOTE:

Alcohol-blended fuel, or “gasohol”, attracts

moisture which can lead to the separation

and formation of acids during storage. This

acidic gas can damage internal engine parts.

Methanol, ethanol and grain alcohol all are

forms of gasohol. If “gasohol” was used, drain

the fuel tank, then run the engine until it stops

from lack of fuel.



Drain the fuel into approved container outdoors,

away from open flame. Be sure the engine is

cool.

NOTE:

Using a fuel additive such as STA-BIL® fuel

stabilizer, or an equivalent, will prevent gum

deposits from forming in the engine’s fuel sys-

tem.

2. While the engine is still warm, drain the oil from

the crankcase. Refill with fresh oil. See BEFORE

STARTING ENGINE on Page 3 for oil recommen-

dations.

3. Remove spark plug and pour about 1/2 ounce (15

ml) of engine oil into the cylinder. Crank slowly to

distribute oil.



Avoid spray from the spark plug hole when

cranking the engine slowly.

4. Install the spark plug. Do not connect the spark

plug wire.

5. Clean the dirt, oil and grease from the cylinder,

cylinder head, fins, blower housing, rotating

screen and muffler area.

6. Close the fuel shut-off valve.

OTHER STORAGE TIPS

1. Do not store gasoline from one season to anoth-

er.

2. Replace the gasoline container if it starts to rust.

Rust and/or dirt in a gasoline container can cause

problems if the fuel is used with this equipment.

3. Store the equipment in a clean and dry area.



Section 3 — Maintenance

GH - 410 Engine

MAINTENANCE SCHEDULE

Every 8 Hours or 25 Hours or Every 50 Hours or Every 100 Hours or Every

MAINTENANCE OPERA TION or Daily Season Season Season

Check Oil Level X

Change Oil See Note 1

Change Oil Filter (if so equipped) See Note 1

Service Air Filter Foam Pre-Filter Paper Filter (Note 2)

Replace or Clean Spark Plug X

Clean Spark Arrestor Screen X

Adjust Valve Clearance X

NOTE 1: Change oil and filter after first 8 hours of operation and then every 100 hours thereafter. Change sooner when operating under heavy load or

in dusty or dirty environment or in high ambient temperature.

NOTE 2: Clean more often when operating under dirty or dusty conditions.

SPECIFICATIONS

SERVICE PARTS

Section 3 — Maintenance

GH - 410 Engine

Model GH-410

Bore 90mm

Stroke 64mm

Valve Clearance 0.05–0.10mm

Displacement 407cc

Maximum Tilt Angle

While Operating 15°

Oil Capacity with Oil Filter 1500ml (51 oz.)

Oil Capacity without Oil Filter 1350 ml (46 oz.)

Model GH-410

Air Filter Part Number 073111

Pre-filter Part Number 081646

Oil Filter (black) Part Number 070185

Oil Filter (yellow) Part Number 070185A

Spark Plug Part Number 0E7585

CALIFORNIA AND FEDERAL EVAPORATIVE EMISSION CONTROL

WARRANTY STATEMENT

YOUR WARRANTY RIGHTS AND OBLIGATIONS

The California Air Resources Board and Generac Power Systems is pleased to explain the evaporative emission control

system’s warranty on your 2006 model year and later small off-road (equipment type) engine. In California, new equipment

that use small off-engines must be designed, built, and equipped to meet the State’s stringent anti-smog standards. Generac

Power Systems must warrant the evaporative emission control system on your small off-road (equipment type) engine for the

period listed below provided there has been no abuse, neglect or improper maintenance of your equipment.

Your evaporative emission control system may include parts such as: carburetors, fuel tanks, fuel lines, fuel caps, valves,

canisters, filters, vapor hoses, clamps, connectors, and other associated components. For engines less than or equal to

80 cc, only the fuel tank is subject to the evaporative emission control warranty requirements of this section.

MANUFACTURER’S WARRANTY COVERAGE

This evaporative emission control system is warranted for two years. If any evaporative emission-related part on your equip-

ment is defective, the part will be repaired or replaced by Generac Power Systems.

OWNER’S WARRANTY RESPONSIBILITIES

• As the small off-road engine (equipment type) owner, you are responsible for performance of the required maintenance

listed in your owner’s manual. Generac Power Systems recommends that you retain all receipts covering maintenance on

your (equipment type), but Generac Power Systems cannot deny warranty solely for the lack of receipts.

• As the small off-road engine (equipment type) owner, you should however be aware that the Generac Power Systems may

deny you warranty coverage if your fuel tank has failed due to abuse, neglect, or improper maintenance or unapproved

modifications.

• You are responsible for presenting your (equipment type/fuel tank) to a Generac Power Systems distribution center or ser-

vice center as soon as the problem exists. The warranty repairs should be completed in a reasonable amount of time, not

to exceed 30 days. If you have a question regarding your warranty coverage, you should contact the authorized warranty

service at 1-800-333-1322.

DEFECTS WARRANTY REQUIREMENTS

(a) The warranty period begins on the date the engine or equipment is delivered to an ultimate purchaser.

(b) General Evaporative Emissions Warranty Coverage. The fuel tank must be warranted to the ultimate purchaser and

any subsequent owner that the evaporative emission control system when installed was:

(1) Designed, built, and equipped so as to conform with all applicable regulations; and

(2) Free from defects in materials and workmanship that causes the failure of a warranted part for a period of two

years.

Section 4 – Warranty

GH - 410 Engine

(1) Any warranted part that is not scheduled for replacement as required maintenance in the written instructions

must be warranted for the warranty period defined in subsection (b)(2). If any such part fails during the period of

warranty coverage, it must be repaired or replaced by the Generac Power Systems issuing the warranty. Any such

part repaired or replaced under the warranty must be warranted for a time not less than the remaining warranty

period.

(2) Any warranted part that is scheduled only for regular inspection in the written instructions must be warranted for

the warranty period defined in subsection (b)(2). A statement in such written instructions to the effect of “repair

or replace as necessary” will not reduce the period of warranty coverage. Any such part repaired or replaced under

warranty must be warranted for a time not less than the remaining warranty period.

(3) Any warranted part that is scheduled for replacement as required maintenance in the written instructions must be

warranted for the period of time prior to the first scheduled replacement point for that part. If the part fails prior

to the first scheduled replacement, the part must be repaired or replaced by the Generac Power Systems. Any such

part repaired or replaced under warranty must be warranted for a time not less than the remainder of the period

prior to the first scheduled replacement point for the part.

(4) Repair or replacement of any warranted part under the warranty provisions of this article must be performed at no

charge to the owner at a warranty station.

(5) Notwithstanding the provisions of subsection (4) above, warranty services or repairs must be provided at distribution

centers that are franchised to service the subject engines or equipment.

(6) The owner must not be charged for diagnostic labor that leads to the determination that a warranted part is in fact

defective, provided that such diagnostic work is performed at a warranty station.

(7) Throughout the evaporative emission control system’s warranty period set out in subsection (b)(2), the Generac

Power Systems issuing the warranty must maintain a supply of warranted parts sufficient to meet the expected

demand for such parts.

(8) Manufacturer approved replacement parts must be used in the performance of any warranty maintenance or repairs

and must be provided without charge to the owner. Such use will not reduce the warranty obligations of the manu-

facturer issuing the warranty.

(9) The use of any add-on or modified parts will be grounds for disallowing a warranty claim made in accordance with

this article. The manufacturer issuing the warranty will not be liable under this Article to warrant failures of war-

ranted parts caused by the use of an add-on or modified part.

Part 1a

Section 4 – Warranty

GH - 410 Engine

Section 4 – Warranty

GH - 410 Engine

EMISSIONS CONTROL WARRANTY STATEMENT

YOUR WARRANTY RIGHTS AND OBLIGATIONS

Generac Power Systems is pleased to explain the emissions control system’s warranty on your 2006 and later small off-road

engine. In California, new equipment that use small off-engines must be designed, built, and equipped to meet the State’s

stringent anti-smog standards. Generac Power Systems must warrants the emissions control system on your small off-road

engine for the period listed below provided there has been no abuse, neglect or improper maintenance of your equipment.

Your emissions control system may include parts such as: carburetors or fuel injection system, ignition system, catalytic

converters, fuel tanks, valves, filters, clamps, connectors, and other associated components. Also, included may be hoses,

belts, connectors, sensors, and other emission-related assemblies.

Where a warrantable condition exists, Generac Power Systems will repair your small off-road (or equipment type) engine at

no cost to you including diagnosis, parts and labor.

MANUFACTURER’S WARRANTY COVERAGE:

This emissions control system is warranted for two years. If any emissions-related part on your equipment is defective, the

part will be repaired or replaced by Generac Power Systems.

OWNER’S WARRANTY RESPONSIBILITIES

• As the small off-road (equipment type) engine owner, you are responsible for performance of the required maintenance

listed in your owner’s manual. Generac Power Systems recommends that you retain all receipts covering maintenance

on your small off-road (equipment type) engine, but Generac Power Systems cannot deny warranty solely for the lack of

receipts or your failure to ensure the performance of all scheduled maintenance.

• As the small off-road (equipment type) engine owner, you should however be aware that the Generac Power Systems may

deny you warranty coverage if your small off-road (equipment type) engine or a part has failed due to abuse, neglect, or

improper maintenance or unapproved modifications.

• You are responsible for presenting your small off-road (equipment type) engine to a Generac Power Systems distribu-

tion center or service center as soon as the problem exists. The warranty repairs should be completed in a reasonable

amount of time, not to exceed 30 days. If you have a question regarding your warranty coverage, you should contact at

1-800-333-1322.

DEFECTS WARRANTY REQUIREMENTS

(a) The warranty period begins on the date the engine or equipment is delivered to an ultimate purchaser.

(b) General Emissions Warranty Coverage. The Generac Power Systems of each small off-road engine or equipment

must warrant to the ultimate purchaser and each subsequent owner that the engine or equipment is:

(1) Designed, built, and equipped so as to conform with all applicable regulations adopted by the Air Resources Board;

and

(2) Free from defects in materials and workmanship that causes the failure of a warranted part for a period of two

years.

(1) Any warranted part that is not scheduled for replacement as required maintenance in the written instructions

required by subsection (d) must be warranted for the warranty period defined in Subsection (b)(2). If any such

part fails during the period of warranty coverage, it must be repaired or replaced by the manufacturer according to

Subsection (4) below. Any such part repaired or replaced under the warranty must be warranted for the remaining

warranty period.

(2) Any warranted part that is scheduled only for regular inspection in the written instructions required by subsection (d)

must be warranted for the warranty period defined in Subsection (b)(2). A statement in such written instructions to

the effect of “repair or replace as necessary” will not reduce the period of warranty coverage. Any such part repaired

or replaced under warranty must be warranted for the remaining warranty period.

Section 4 – Warranty

GH - 410 Engine

(3) Any warranted part that is scheduled for replacement as required maintenance in the written instructions required

by subsection (d) must be warranted for the period of time prior to the first scheduled replacement point for that

part. If the part fails prior to the first scheduled replacement, the part must be repaired or replaced by the engine

manufacturer according to Subsection (4) below. Any such part repaired or replaced under warranty must be war-

ranted for the remainder of the period prior to the first scheduled replacement point for the part.

(4) Repair or replacement of any warranted part under the warranty must be performed at no charge to the owner at a

warranty station.

(5) Notwithstanding the provisions of Subsection (4) above, warranty services or repairs must be provided at all manu-

facturer distribution centers that are franchised to service the subject engines.

(6) The owner must not be charged for diagnostic labor that leads to the determination that a warranted part is in fact

defective, provided that such diagnostic work is performed at a warranty station.

(7) The manufacturer is liable for damages to other engine components proximately caused by a failure under warranty

of any warranted part.

(8) Throughout the emissions warranty period defined in Subsection (b)(2), the manufacturer must maintain a supply

of warranted parts sufficient to meet the expected demand for such parts.

(9) Any replacement part may be used in the performance of any warranty maintenance or repairs and must be provided

without charge to the owner. Such use will not reduce the warranty obligations of the manufacturer.

(10) Add-on or modified parts that are not exempted by the Air Resources Board may not be used. The use of any non-

exempted add-on or modified parts will be grounds for disallowing a warranty claim. The manufacturer will not be

liable to warrant failures of warranted parts caused by the use of a non-exempted add-on or modified part.

(11) The manufacturer issuing the warranty shall provide any documents that describe that manufacturer’s warranty

procedures or policies within five working days of request by the Air Resources Board.

(d) Emission Warranty Parts List.

Test Record Engine Company (engine manufacturer) will furnish with each new engine written instructions for the mainte-

nance and use of the engine by the owner.

Part 2

(1) Fuel Metering System

(i) Carburetor and internal parts (and/or pressure

regulator or fuel injection system).

(ii) Air/fuel ratio feedback and control system.

(iii) Cold start enrichment system.

(iv) Fuel Tank.

(2) Air Induction System

(i) Controlled hot air intake system.

(ii) Intake manifold.

(iii) Air filter.

(3) Ignition System

(i) Spark Plugs.

(ii) Magneto or electronic ignition system.

(iii) Spark advance/retard system.

(4) Exhaust Gas Recirculation (EGR) System

(i) EGR valve body, and carburetor spacer if appli-

cable.

(ii) EGR rate feedback and control system.

(5) Air Injection System

(i) Air pump or pulse valve.

(ii) Valves affecting distribution of flow.

(iii) Distribution manifold.

(6) Catalyst or Thermal Reactor System

(i) Catalytic converter.

(ii) Thermal reactor.

(iii) Exhaust manifold.

(7) Particulate Controls

(i) Traps, filters, precipitators, and any other

device used to capture particulate emissions.

(8) Miscellaneous Items Used in Above Systems

(i) Electronic controls.

(ii) Vacuum, temperature, and time sensitive valves

and switches.

(iii) Hoses, belts, connectors, and assemblies.

Part No. 0E7300 Revision A (12/21/05) Printed in U.S.A.

Section 4 – Warranty

GH - 410 Engine

GENERAC POWER SYSTEMS’ TWO-YEAR LIMITED WARRANTY FOR GSH SERIES ENGINES

For a period of 2 (two) years of operation from the date of original sale, Generac Power Systems, Inc. (Generac) will, at its

option, repair or replace any part which, upon examination, inspection and testing by Generac or a Generac Authorized

Warranty Service Dealer, is found to be defective under normal use and service, in accordance with the warranty schedule

set forth below. Any equipment that the purchaser/owner claims to be defective must be returned to and examined by the

nearest Generac Authorized Warranty Service Dealer. All transportation costs under the warranty, including return to the

factory, are to be borne and prepaid by the purchaser/owner. This warranty applies only to Generac GSH engines sold and

rated for GSH engine applications, as Generac has defined GSH engine applications. This warranty pertains only to the GSH

engines utilized to power equipment. Examples include, but are not limited to, portable generators, pressure washers, air

compressors, welders, lawn tractors and mowers, snow blowers, edgers and pumps. This warranty does not cover engines

used in competitive events. This warranty is not transferable.

WARRANTY SCHEDULE

GSH engines bound for export outside of North America shall be warranted for a period of 1 (one) year for consumer/

commercial/industrial applications.

CONSUMER/COMMERCIAL/INDUSTRIAL APPLICATIONS

• YEAR ONE and TWO - 100% (one hundred percent) coverage on part(s) and labor as listed (proof of purchase

required):

Engine - All components

All warranty expense allowances are subject to the conditions defined in Generac’s Warranty Policies, Procedures and Flat

Rate Manual for engines.

THIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING:

• Generac engines that utilize non-Generac replacement parts.

• Costs of normal maintenance, adjustments, installation and start-up.

• Failures caused by any contaminated fuels, oils, or lack of proper fluid amounts.

• Failures due, but not limited, to normal wear and tear, accident, misuse, abuse, use in competitive events, negligence or

improper installation. As with all mechanical devices, the GSH Series engines need periodic part(s) service and replace-

ment to perform well. This warranty will not cover repair when normal use has exhausted the life of a part(s) or engine.

• Failures caused by any external cause or act of God, such as collision, theft, vandalism, riot or wars, nuclear holocaust,

fire, freezing, lightning, earthquake, windstorm, hail, volcanic eruption, water or flood, tornado or hurricane.

• Products that are modified or altered in a manner not authorized by Generac in writing.

• Any incidental, consequential or indirect damages caused by defects in materials or workmanship, or any delay in repair

or replacement of the defective part(s).

• Engines used for generators that are utilized as “Prime Power” in place of existing utility power where utility is present or

in place of utility power where utility power service does not normally exist.

• Failure due to misapplication.

• Telephone, cellular phone, facsimile, internet access or other communication expenses.

• Living or travel expenses of person(s) performing service, except as specifically included within the terms of a specific unit

warranty period.

• Expenses related to “customer instruction” or troubleshooting where no manufacturing defect is found.

• Rental equipment used while warranty repairs are being performed.

• Overnight freight costs for replacement part(s).

• Overtime labor.

• Starting batteries, fuses, light bulbs and engine fluids.

THIS WARRANTY IS IN PLACE OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED. SPECIFICALLY, GENERAC

MAKES NO OTHER WARRANTIES AS TO THE MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some

states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.

GENERAC’S ONLY LIABILITY SHALL BE THE REPAIR OR REPLACEMENT OF PART(S) AS STATED ABOVE. IN NO EVENT

SHALL GENERAC BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF SUCH DAMAGES ARE

A DIRECT RESULT OF GENERAC’S NEGLIGENCE. Some states do not allow the exclusion or limitation of incidental or

consequential damages, so the above limitation may not apply to you. Purchaser/owner agrees to make no claims against

Generac based on negligence.

This warranty gives you specific legal rights. You also may have other rights that vary from state to state.

Generac

Power Systems, Inc.

P.O. Box 297 • Whitewater, WI 53190

Generac Power Systems GH-410 Owner's manual

Generac Power Systems GH-410 Owner's manual

Generac Power Systems GH-410 Owner's manual

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