Jacobsen 544914 Owner's manual

Brand: Jacobsen

Model: 544914

Category: Mini tillers

Type: Owner's manual

Safety & Operation

Manual

GA 60 PT Aerator

Model 544914

4117238-Rev A

Litho in U.S.A. 12–2002

2002 TEXTRON INC.

GENERAL INFORMATION

IMPORTANT!

THIS MANUAL WILL AID YOU IN THE SAFE

OPERATION AND PROPER MAINTENANCE OF

YOUR EQUIPMENT. READ MANUAL THOROUGHLY

BEFORE ATTEMPTING OPERATION. IF ANY

PORTION IS NOT CLEARLY UNDERSTOOD,

CONTACT AN AUTHORIZED DEALER FOR

CLARIFICATION.

To make sure you are fully aware of safety and service

information, the following two symbols are used

throughout this manual.

This symbol is used throughout the manual to

alert you to information about unsafe actions or

situations, and will be followed by the word DANGER,

WARNING, or CAUTION. DANGER indicates

immediate hazards that may result in severe injury or

death. WARNING indicates unsafe actions or situations

that may cause severe injury, death and/or major

equipment or property damage. CAUTION indicates

unsafe actions or situations that may cause injury, and/or

minor equipment or property damage.

NOTE: This appears next to information or instructions

which will help you operate and maintain your

equipment the right way.

WARNING

S The information and instructions included

in this manual alert you to certain things

you should do very carefully. If you do not,

you could:

• hurt yourself or others

• hurt the next person who operates the

equipment

• damage the equipment.

S This manual contains essential operation

and safety information and must remain

with the unit at all times, within easy ac-

cess of any operator.

Additional manuals are available through your dealer.

IMPORTANT!

THIS EQUIPMENT SHOULD NOT BE MODIFIED OR

ADDED TO WITHOUT THE MANUFACTURER’S

AUTHORIZATION.

WARNING

S Altering this equipment in any manner

which adversely affects the equipments

operation, performance, durability or use,

may cause hazardous conditions.

Direct any inquiries to:

Textron Golf,Turf and Specialty Products

Attn: Director of Engineering

P.O. Box 7708

Charlotte, NC 28241–7708 USA

SPECIFICATION INFORMATION

All information contained in this manual is the latest

available at the time of printing. Textron Golf,Turf and

Specialty Products reserves the right to make changes

at any time without notice.

Whenever a name brand product is specified, an

equivalent product may be used unless stated otherwise.

CHANGE OF OWNERSHIP OR ADDRESS

Textron Golf,Turf and Specialty Products makes every

effort to keep owners informed of all safety related

information. Therefore, changes in ownership and/or

address should be reported to the manufacturer.

Your dealer has REGISTRATION CHANGE FORMS

which will be filled out and filed by the dealer for his

records, and a copy will be sent to the manufacturer.

DEALER INFORMATION

For your nearest dealer location write to:

Textron Golf,Turf and Specialty Products

Attn: Sales

P.O. Box 7708

CHarlotte, NC 28241–7708 USA

In the USA and Canada call 1–800–228–4444 (dealer

information only).

TABLE OF CONTENTS

1 Operation Safety 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Identification 3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Model Number and Serial Number 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Service Parts and Support Material 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Specifications 3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Turf Utility Tractor Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 Set Up 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.1 Set Up Utility Tractor 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.2 Removing From Pallet 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.3 Installing Tines 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 Operation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.1 Pre–Operation Check 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.2 Beginning Aeration 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 MAINTENANCE 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.1 Daily Maintenance 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.2 Tires 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.3 Gear Box 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.4 Towing 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 Storage 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 Torque Chart 9

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 Tine Holders 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11 Tines 11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12 Warranty 14–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13 Index 16

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 OPERATION SAFETY

WARNING

EQUIPMENT OPERATED IMPROPERLY OR BY

UNTRAINED PERSONNEL CAN BE DANGEROUS

This is heavy equipment. Improper use, or operat-

ing the unit in areas that may cause it to overturn,

could cause serious injury or death to you the oper-

ator or bystanders.

READ and understand the operator’s manual be-

fore attempting to operate this unit.

Immediately replace any warning and/or safety

decal that becomes damaged or difficult to read.

This product is heavy equipment and may present a

crush hazard unless safety precautions are taken.

Allow ONLY trained and authorized persons to op-

erate this unit. NEVER allow children to operate this

unit. Local regulations may restrict the age of the

operator.

Use ONLY the standard drawbar approved by the

tractor manufacturer. The height from the ground

to the top of the drawbar must be 13 to 19.7 inches

(330–500 mm).

Never operate the unit while under the influence of

alcohol or drugs.

Never operate the unit while people, especially chil-

dren, or pets are nearby.

Keep in mind that the operator or user is responsi-

ble for accidents or hazards occurring to other

people or property.

BEFORE using the unit, always inspect it for prob-

lems. If something is wrong, DO NOT USE IT. Fix the

problem before using the unit to prevent possible

injury.

WHILE using the unit, if something is found to be

wrong, STOP using it. Fix the problem before the

unit is used again.

Operate the machine up and down the slope (verti-

cally), not across the face of the slope (horizon-

tally).

ALWAYS use good judgement when operating on

or near hills or slopes. NEVER start or stop sud-

denly, you may cause unstable operating condi-

tions. NEVER change directions abruptly or make

sharp turns on slopes.

DO NOT place hands or feet near or under moving

parts at any time.

Check work area and remove foreign objects which

may be a hazard to the operator, bystanders or

damage the equipment.

To prevent damage to the unit or other equipment,

BE SURE all under ground obstacles are clearly

marked.

Make sure all shields and guards are in place to

prevent possible injury.

BE SURE the PTO on the tractor is disengaged

when attaching the drive shaft.

Stay clear of the drive shaft when the PTO is

engaged. The drive shaft can catch clothing and

result in serious injury or death.

DO NOT make any adjustments or perform any

maintenance while the PTO is engaged.

IDENTIFICATION 2

2 IDENTIFICATION

THESE IDENTIFICATION NUMBERS MUST APPEAR

ON ALL CORRESPONDENCE CONCERNING THIS

UNIT.

2.1 MODEL NUMBER & SERIAL NUMBER

Both the Model Number and Serial Number are on the

identification nameplate located behind the gear box

(See Fig. 1).

FRONT

OF UNIT

Figure 1

1. Identification Nameplate

3 SERVICE PARTS & SUPPORT MATERIAL

3 SERVICE PARTS AND

SUPPORT MATERIAL

Description Part Number. . . . . . . . . . . . . . . . . . . . . . . .

Drive Belt 2701420. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chain, #50 sealed roller, 69 links 891956. . . . . . . . . . .

Connector, #50 sealed 522123. . . . . . . . . . . . . . . . . . . .

Chain Lubricant, Spray 523248. . . . . . . . . . . . . . . . . . . .

Wool Grease 893078. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts and Maintenance Manual 4117235. . . . . . . . . . . .

Coring tines See pages 14 – 15. . . . . . . . . . . . . . . . . . .

Touch up paint, Jacobsen Orange

16 oz. (.5L) spray 2700345. . . . . . . . . . . . . . . . . . . . . . .

1 qt. (.95L) can 2700351. . . . . . . . . . . . . . . . . . . . . . . . . .

Black, 16 oz. (.5L) spray 814294. . . . . . . . . . . . . . . . . .

SPECIFICATIONS 4

4 SPECIFICATIONS

(subject to change without notice)

Aerator:

Core Diameter 1/4” (6.5 mm). . . . . . . . . . . . . . . . . . .

3/8” (9.5 mm)

1/2” (13 mm)

5/8” (16 mm)

Standard 3/4” (19 mm). . . . . . . . . . . . . . . . . . . . . . .

Core Spacing (width) 2 1/2” (63 mm). . . . . . . . . . . .

Core Spacing (length) 3 1/2” to 5” variable. . . . . . .

(89 mm to 127 mm)

**Core Depth 2 1/2” (64 mm) to 4” (102 mm). . . . .

Coring Width 60” (1524 mm). . . . . . . . . . . . . . . . . . .

**Maximum attainable depth may vary depending on

soil conditions.

Dimensions:

Width 90” (2286 mm). . . . . . . . . . . . . . . . . . . . . . . . .

Length 78” (1981 mm). . . . . . . . . . . . . . . . . . . . . . . .

Height 43” (1092 mm). . . . . . . . . . . . . . . . . . . . . . . . .

Weight Total: 1958 lbs. (890 kg). . . . . . . . . . . . . . . .

Axle: 1562 lbs. (710 kg)

Tongue: 396 lbs. (180 kg)

Gear Box

Gear Ratio 1.5 : 1 (increasing). . . . . . . . . . . . . . . . .

Input Speed 540 RPM. . . . . . . . . . . . . . . . . . . . . . . .

Output Speed 810 RPM. . . . . . . . . . . . . . . . . . . . . .

Oil SAE EP 80–90 Gear Lube. . . . . . . . . . . . . . . . . .

2.25 qt. (2.1 L)

Tires: 23 x 10.5 – 12 Turf Tires. . . . . . . . . . . . . . . . . . . .

18 psi (125 kPa)

Standards

Conforms to European Community (EC) standard

89/392 and amendments 91/368 and 93/44/EEC.

4.2 TURF UTILITY TRACTOR

SPECIFICATIONS

Minimum weight of turf utility tractor – 2700 lbs. (1225

kg).

Required PTO horsepower of 25–45 hp.

NOTE: Actual horsepower required depends on soil

conditions.

Maintain a PTO speed of 540 RPM.

Standard drawbar approved by tractor manufacturer.

Drawbar height must be 13 – 19.7 inches (330–500 mm)

from ground to top of drawbar.

Hydraulic system with 1800 to 2250 psi (12.4 to 15.5

MPa) maximum pressure. Minimum output of 3 gallon

per minute (11.4 L/min). Quick couplers located at rear of

tractor.

Braking system capable of controlling the tractor and the

towed GA 60PT weighing 1958 lbs. (890 Kg).

Governor and properly geared transmission capable of

controlling ground speed from 1 to 2 mph (1.6 to 3.2

km/hr) while aerating.

5 SET UP

5.1 SET UP UTILITY TRACTOR

1. Install and secure a 2” (51mm) tow hitch ball to the

standard tractor drawbar. BE SURE the ball hitch is

a class 2 (3500 lb. capacity) or better ball.

CAUTION

Use ONLY the standard drawbar approved by

the tractor manufacturer. The height from the

ground to the top of the drawbar must be 13 to

19.7 inches (330–500 mm).

NOTE: If raising the hydraulic lever lowers the aerator,

the hydraulic lines are reversed. Reverse the

hydraulic lines at the quick couplers.

2. The GA 60PT can produce a maximum hole spacing

of 5” (125 mm). Hole spacings greater than 5” (125

mm) will SEVERELY DAMAGE the aerator

mechanism.

NOTE: The tractor speed MUST BE kept below 2 mph

(3.2 km/hr) and maintain a constant PTO speed of

540 RPM when aerating. BE SURE to use an

engine speed and transmission gear that will result

in a hole spacing of less than 5” (127 mm). Aerating

speeds exceeding the allowable 2 mph (3.2 km/hr)

will SEVERELY DAMAGE the aerator mechanism

components.

Hole

Spacing

Miles

Per

Hour

2.5”

3.7”

5.0”2.0

1.5

1.068 seconds

51 seconds

34 seconds

Approximate

time needed to

drive 100’

Tractor Hole Spacing Chart

Inches

(30.5 Meters) (Km/hr.) (mm)

5.2 REMOVING FROM PALLET

1. Carefully cut and remove all banding securing

aerator, tongue, and drive line to shipping pallet.

2. Locate and secure the six (6) 1/2–13 x 1 1/2” screws

(Part No. 311401), lockwashers (Part No. 120166),

and nuts (Part No. 800544) located in a cloth bag in

the tool box.

3. Using hardware, install and secure the aerator hitch

assembly to the main frame.

4. Using the jack attached to the GA 60PT, raise the GA

60PT high enough to make sure the tongue clears

the ball hitch on the tractors drawbar.

NOTE: Blocks may be needed to properly support the

jack when raising the GA 60PT.

5. Back the tractor up to the GA 60PT. Position the

tractor so the GA 60PT tongue may be lowered onto

the ball hitch.

6. Slowly lower the tongue onto the ball hitch. Tighten

ball grip to ball hitch by turning the square nut on

hitch coupler clockwise until tight.

7. Lock the hydraulic lift control on the tractor in the float

position to relieve hydraulic pressure. This will allow

the hydraulic hoses to be connected more easily.

NOTE: After connecting the hydraulic hoses, BE SURE

to release the hydraulic lift control from the float

position.

8. Raise the aerator heads as high as possible to allow

GA 60PT to be removed from pallet.

NOTE: Place various thickness boards or blocks in front

of the pallet to create a ramp inorder to help prevent

the GA 60PT from dropping to the ground from

pallet during removal.

BE SURE aerator heads are raised to their

maximum height to assure the turf guards do not

catch on pallet.

WARNING

DO NOT allow anyone to stand directly behind

pallet during removal of the GA 60PT.

The weight of the unit may cause the pallet to

slide back quickly when the GA 60PT is

removed.

9. Slowly drive the tractor forward to remove GA 60PT

from pallet.

10. Install and secure the drive line to the GA 60PT.

SET UP 5

5.3 INSTALLING TINES

WARNING

DO NOT attempt to install tines with the tractor

engine running. Remove key from tractor to

insure the engine will not be started during

tine installation.

Set parking brake on tractor.

Before installing tines or performing any work

under the GA 60PT, always lock the uplatch bar

in place to prevent the accidental lowering of

the aeration heads or the lowering of the heads

due to a loss in hydraulic pressure.

To lock uplatch bar, remove the pin under the

rear of the bar and move it to the upper hole,

making sure the pin passes through the

uplatch bar to lock it in place. Refer to figures

2 and 3.

Figure 2

Figure 3

1. Uplatch Bar (Locked position)

2. Pin

3. Lower Hole

1. Insert three (3) tines per holder and torque screws

(see torque chart on page 8). BE SURE tines are

tight against shoulder on tine holder. Open side of

each tine should be positioned towards the rear of

the machine for proper ejection of cores (See Fig. 4).

Figure 4

6 OPERATION

6.1 PRE–OPERATION CHECK

1. Check grounds area and remove foreign objects

which may be a hazard to the operator or could

damage the equipment.

2. BE SURE all under ground obstacles are clearly

marked.

3. Visually check all moving parts and fasteners, if

broken or loose, replace or tighten. Check for broken

or bent tines, replace as necessary.

4. BE SURE that all shields and guards are in place.

NEVER make adjustments or perform any

maintenance while the PTO is engaged.

6.2 BEGINNING AERATION

CAUTION

Position the tractor’s three point hitch arms to clear

the GA 60PT’s hitch and drive line when turning.

The tractor’s three point hitch arms may need to be

removed.

To prevent possible breakage of hydraulic lift cylin-

der brackets on frame, unit MUST BE resting on

down stops while aerating.

NEVER use the hydraulic lift cylinder to adjust

depth of aeration.

AERATING DEPTH ADJUSTMENT

The GA 60PT is designed to aerate at a MAXIMUM

depth of 4” (102 mm). The operator should be aware that,

in extremely hard soil, the machine may not be capable

of pushing the tines 4” (102 mm) into the ground. DO

NOT operate with the depth setting at the 4” (102 mm)

maximum when the tines are only penetrating 2–3 inches

(51–76 mm). Operating under these conditions will

cause premature wear and/or broken components in the

aerator linkage. If the aerator tires consistently ride up off

the turf or bounce up off the turf, the ground is too hard.

NEVER try to aerate at a depth greater than the soil

conditions will allow. The operator must first make a test

run, measure the depth of the holes, and set the depth

adjustment to correspond to soil conditions. After

aerating the area once or twice at that depth to loosen the

sub–soil, it may be possible to lower the settings each

time until the 4” (102 mm) maximum depth can be

accomplished without abusing the GA 60PT.

AGAIN––Aerate a small test plot, measure the depth of

the hole and adjust the depth setting on the GA 60PT to

match it.

If aerating extremely hard soil, additional penetration is

possible with added water, either by rain or irrigation.

Moist ground is easier to aerate than dry ground and is

also easier on the aerator mechanism.

If aerating in soil with rocks or stones, additional

penetration over time may not be possible. The operator

must determine what depth is possible for that area and

be sure not to exceed that depth.

Adjusting the depth from 2 1/2” (64 mm) to 4” (102 mm) is

accomplished by adjusting the 1/2” (13 mm) axle stop

spacers shown in Figure 5.

CAUTION

Use extreme caution when backing the GA 60PT.

DO NOT back the GA 60PT with the aerator heads

in the down position. The tines and tine rams will

be SEVERELY DAMAGED.

DO NOT operate the GA 60PT over any hard sur-

faces (ie. driveways, sidewalks, ect.) with aerator

heads in the down position.

With the aerator heads raised, the GA 60PT can be

transported at any reasonable safe speed (10 m.p.h.

maximum). ALWAYS use extreme care when towing

aerator at any speeds above 5 m.p.h.

NOTE: The GA 60PT may be damaged if towed on a

flatbed trailer without the aerator heads lowered.

Place boards or similar type material on trailer to

prevent damage to trailer and/or tines when the

heads are lowered. Place blocks on the downstops

and lower the aerator heads.

Figure 5

1. Downstop Block

2. Spacers

MAINTENANCE 7

7 MAINTENANCE

WARNING

When performing service or maintenance

work on the GA 60PT, ALWAYS lock the

uplatch bar in place to prevent the aeration

heads from being lowered accidentally or due

to a loss in hydraulic pressure. Set the park

brake on the tractor.

If any type of work is to be performed on the

GA 60PT, remove the key from the tractor.

This will prevent the tractor from being acci-

dentally started.

When replacement parts are required, use

genuine RYAN parts or parts with equivalent

characteristics such as type, strength and

material. Failure to do so may result in prod-

uct malfunction and possible injury to the

operator and/or bystanders.

NEVER attempt to perform service or mainte-

nance functions on the GA 60PT if you are

UNTRAINED or UNAUTHORIZED. Improper

maintenance can and will cause hazardous

conditions. For necessary maintenance and

service, contact your authorized RYAN dealer.

When it is necessary to raise the GA 60PT for

any repair or service, use jackstands to help

provide adequate support. DO NOT rely on

hydraulic or mechanical jacks for support.

Immediately replace any warning and/or

safety decal that becomes damaged or diffi-

cult to read.

7.1 DAILY MAINTENANCE

1. Check the tire pressure (18 psi, 124 kPa).

2. BE SURE the weight is off of the tires. Lubricate axle

pivots with a standard lithium based lubricant. Refer

to lubrication chart below.

3. Lubricate aerator drive chains with chain lubricant

spray (Part No. 523248).

4. Lubricate the pillow block bearing with a standard

lithium based lubricant. Refer to lubrication chart

below.

5. Lubricate U–joints in the drive line with a standard

lithium based lubricant. Refer to lubrication chart

below.

7.2 TIRES

Keep tires properly inflated to prolong tire life. Check

inflation pressure while the tires are cool. Inspect tread

wear.

Use an accurate, low pressure tire gauge.

Keep tires inflated to the air pressure specified below.

23 x 10.5 – 12 Turf Tires 18 psi (124 kPa). . . . . . . . . .

CAUTION

Unless you have the proper training, tools and

experience, DO NOT attempt to mount a tire on

a rim. Improper mounting can produce an ex-

plosion which may result in serious injury.

⊗

1. Pillow Block

2. U–Joint (both ends)

3. Center of Drive Line

4. Axle Yoke

5. Axle Yoke

6. Axle Yoke

⊗

LUBRICATION CHART

7 MAINTENANCE

7.3 GEAR BOX

The oil level should be filled up to the rear plug on the

gear box (See Fig. 6).

If oil is needed, use SAE EP 80–90 gear lube. Remove

the vent cap on the gear box and fill until the oil begins to

come out the rear plug hole. Reinstall the rear plug and

vent cap.

FRONT

OF UNIT

Figure 6

1. Vent Cap

2. Rear Plug

7.4 TOWING

With the aerator heads raised, the GA 60PT can be

transported at any reasonable safe speed (10 m.p.h.

maximum). ALWAYS use extreme care when towing

aerator at any speeds above 5 m.p.h.

NOTE: The GA 60PT may be damaged if towed on a

flatbed trailer without the aerator heads lowered.

Place boards or similar type material on trailer to

prevent damage to trailer and/or tines when the

heads are lowered. Place blocks on the downstops

and lower the aerator heads.

STORAGE 8

8 STORAGE

GENERAL

1. Wash the machine thoroughly and lubricate. Repair

and paint damaged or exposed metal.

2. Inspect the machine, tighten all hardware, replace

worn or damaged components.

3. Check to make sure all guards are in place. Replace

any missing or damaged guards.

4. Check to make sure all safety decals are in place and

legible. Replace any missing or damaged decals.

5. Clean the tires thoroughly and store the machine so

the load is off the tires. If machine is not on jack

stands, check tires at regular intervals and inflate as

necessary.

6. Lightly lubricate chains and tines using an aerosol

chain lube to prevent rust.

7. Keep the machine clean, dry and protected from the

elements during storage.

AFTER STORAGE

1. Check oil level in the gear box.

2. Wash the machine thoroughly and lubricate.

3. Inspect the machine, tighten all hardware, replace

worn or damaged components.

4. Check to make sure all guards are in place. Replace

any missing or damaged guards.

5. Check to make sure all safety decals are in place and

legible. Replace any missing or damaged decals.

6. Make certain that the tires are properly inflated.

9 TORQUE CHART

M4 M5 M6 M7 M8 M10 M12 M14 M16 M18 M20 M22 M24 M27

ft. lbs. 1.5 3 5.2 8.2 13.5 24 43.5 70.5 108 142 195 276 353 530

N·m 2 4 7 11 18 32 58 94 144 190 260 368 470 707

ft. lbs. 2.2 4.5 7.5 12 18.8 35.2 62.2 100 147 202 275 390 498 747

N·m. 3 6 10 16 25 47 83 133 196 269 366 520 664 996

ft. lbs. 2.7 5.2 8.2 15 21.8 43.5 75 119 176 242 330 471 596 904

N·m 3.6 7 11 20 29 58 100 159 235 323 440 628 794 1205

1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 1 1/8

ft. lbs. 9 18 31 50 75 110 150 250 378 583 782

N·m 12 24 42 68 102 150 203 339 513 790 1060

ft. lbs. 13 28 46 75 115 165 225 370 591 893 1410

N·m 18 38 62 108 156 224 305 502 801 1211 1912

ft. lbs. 24 40

N·m3354

TORQUE SPECIFICATIONS

HEX HEAD CAP SCREWS

* Grade 5 marking – Minimum commercial quality (Lower quality not recommended).

U.S. Standard Hardware

Grade

Shank Size (Diameter in inches, fine or coarse thread)

SAE

grade

5 *

SAE

grade

8 **

Flangelock

Screw w/

Flangelock

Nut

The torque values shown should be used as a general guideline when specific torque values are not given.

** Grade 8 marking –

Grade

Shank Size (Diameter in millimeters, fine or coarse thread)

Grade

8.8*

Grade

10.9**

Grade

12.9 ***

Metric Standard Hardware

* Grade 8.8 marking – ** Grade 10.9 marking – *** Grade 12.9 marking –

8.8 10.9 12.9

TINE HOLDERS 10

4116625.7

4116255.7

4117122.7

4116982.7

Tines Used W/Holder

517486 1/4” Coring Tine

517487 3/8” Coring Tine

Tine Holder 4117122.7 517488 1/2” Coring Tine

547132 1/2” Carbide Tine

523995 1/2” H.D. Tine

Tines Used W/Holder

517487 3/8” Coring Tine

517489 5/8” Coring Tine

Tine Holder 4116255.7 523028 5/8” Coring Tine

523421 3/8” Coring Tine

523472 1/2” Coring Tine

523394 5/8” Coring Tine

838323 1/2” Solid Tine

Tines Used W/Holder

Tine Holder 4116625.7 (Standard) (Standard) 834973 3/4” Coring Tine

523273 3/4” Coring Tine

Tines Used W/Holder

*Tine Holder 4116982.7 523863 1/4” Solid Tine

523864 1/4” Coring Tine

TINE

HOLDERS

*Turf guards (Part No. 4116983.7) must be used when using this tine holder.

(Use 7/8” o.d. tines)

(Use 3/4” o.d. tines)

(Use 1/2” o.d. tines)

(Use 5/8” o.d. tines)

306416

306325

523474

306435

306325

523474

548938

800446

523474

306325

306435

11 TINES

838323523394834973523421523864523863 523995

(1/2” o.d.) (5/8” o.d.) (1/2” o.d.) (3/4” o.d.) (7/8” o.d.) (3/4” o.d.) (3/4” o.d.)

TINE P.N. DESCRIPTION HOLE SIZE HOLDER P.N.

523863 1/4” Solid Tine 1/4” x 2 1/2” 4116982.7

523864 1/4” Coring Tine 1/4” x 2 1/2” 4116982.7

517486 1/4” Coring Tine 1/4” x 2 1/2” 4117122.7

517487 3/8” Coring Tine 3/8” x 2 1/2” 4117122.7

523421 3/8” Coring Tine 3/8” x 3 1/4” 4116255.7

517488 1/2” Coring Tine 1/2” x 2 1/2” 4117122.7

523472 1/2” Coring Tine 1/2” x 3 3/4” 4116255.7

523995 1/2” Coring Tine (H.D.) 1/2” x 2 1/2” 4117122.7

547132 1/2” Coring Tine (Carbide tip) 1/2” x 2 1/2” 4117122.7

838323 1/2” Solid Tine 1/2” x 3 3/4” 4116255.7

523394 5/8” Coring Tine 5/8” x 3 3/4” 4116255.7

517489 5/8” Coring Tine 5/8” x 2 1/2” 4116255.7

523028 5/8” Coring Tine 5/8” x 3 3/4” 4116255.7

523273 3/4” Coring Tine 3/4” x 3 3/4” 4116625.7

834973 3/4” Coring Tine (open side) 3/4” x 3 3/4” 4116625.7

TINES 11

PART

NUMBER

ACTUAL

LENGTH

HOLE

SIZE

TINE HOLDER

USED

APPLICATION

517486

4 1/4”

(108 mm)

Less penetration (use on hard soils).

1/4” x 2 1/2”

(6 mm x 64 mm)

517487

4 1/4”

(108 mm)

3/8” x 2 1/2”

(10 mm x 64 mm)

Less penetration (use on hard soils).

517488

4 1/4”

(108 mm)

1/2” x 2 1/2”

(13 mm x 64 mm)

Less penetration (use on hard soils).

517489

4 1/4”

(108 mm)

5/8” x 2 1/2”

(16 mm x 64 mm)

Less penetration (use on hard soils).

523028

5 1/2”

(140 mm)

5/8” x 3 3/4”

(16 mm x 95 mm)

Older greens with high soil content,

fairways & tees with irrigation and

no rocks.

523273

5 1/2”

(140 mm)

3/4” x 3 3/4”

(19 mm x 95 mm)

Soil change in greens. Soil must

be in good condition.

523421

5”

(127 mm)

3/8” x 3 1/4”

(10 mm x 83 mm)

Older greens with high soil content,

fairways & tees with irrigation and

no rocks.

523472

5 1/2”

(140 mm)

1/2” x 3 3/4”

(13 mm x 95 mm)

Older greens with high soil content,

fairways & tees with irrigation and

no rocks.

523394

5 1/2”

(140 mm)

5/8” x 3 3/4”

(16 mm x 95 mm)

For greens only. Use on greens with

high sand content or wet conditions

if cores are being left in greens.

Solid

Tine

547132

Carbide

Tip

4 1/2”

(114 mm)

1/2” x 2 1/2”

(13 mm x 64 mm)

More durable tine with less penetration

(use where tine wear rate is a problem).

838323

5 1/2”

(140 mm)

5 1/2”

(140 mm)

3/4” x 3 3/4”

(19 mm x 95 mm)

834973

For aerating when removing cores

would be inconvenient.

Standard GA–60 tine. For intensive

fairway aeration.

1/2” x 3 3/4”

(13 mm x 95 mm)

523864

523863

5”

(127 mm)

4”

(102 mm)

1/4” x 2 1/2”

(6 mm x 64 mm)

1/4” x 2 1/2”

(6 mm x 64 mm)

For aerating when removing cores

would be inconvenient.

For greens only. Use on greens with

high sand content or wet conditions

if cores are being left in greens.

4117122.7

4116255.7

4116625.7

4116982.7

4117122.7

4116255.7

4117122.7

4116255.7

4116625.7

NOTES

13 INDEX

INDEX

eginning Aeration 6. . . . . . . . . . . . .

Daily Maintenance 7. . . . . . . . . . . . .

Gear Box 8. . . . . . . . . . . . . . . . . . . . .

Identification 3. . . . . . . . . . . . . . . . . . .

Lubrication Chart 3. . . . . . . . . . . . . .

Maintenance 7. . . . . . . . . . . . . . . . . . .

Model Number 3. . . . . . . . . . . . . . . . .

Operation 6. . . . . . . . . . . . . . . . . . . . .

Pre–Operation Check 6. . . . . . . . . .

Removing From Pallet 4. . . . . . . . . .

Serial Number 3. . . . . . . . . . . . . . . . .

Service Parts & Support Material 3.

Set Up 4. . . . . . . . . . . . . . . . . . . . . . . .

Set Up, Tractor 4. . . . . . . . . . . . . . . .

Specification, Tractor 3. . . . . . . . . . .

Specifications 3. . . . . . . . . . . . . . . . . .

Storage 8. . . . . . . . . . . . . . . . . . . . . . .

Tines 11–12. . . . . . . . . . . . . . . . . . . . .

Tine Installation 5. . . . . . . . . . . . . . . .

Tine Holders 10. . . . . . . . . . . . . . . . . .

Tires 7. . . . . . . . . . . . . . . . . . . . . . . . . .

Torque Chart 9. . . . . . . . . . . . . . . . . .

Towing 6, 8. . . . . . . . . . . . . . . . . . . . . .

Tractor Specification 3. . . . . . . . . . . .

Warranty 14-15. . . . . . . . . . . . . . . . . .

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Jacobsen 544914 Owner's manual

Brand: Jacobsen

Model: 544914

Category: Mini tillers

Type: Owner's manual

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Jacobsen 544914 Owner's manual

Jacobsen 544914 Owner's manual

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