C270
WARNING!
■ To minimize the risk of injury to yourself and others, read
this manual and familiarize yourself with its contents.
■ Always wear eye protection when operating this unit!
SHINDAIWA OWNER’S/OPERATOR’S MANUAL
T270 GRASS TRIMMER
C270 BRUSHCUTTER
T270
2
General Safety Instructions
Attention Statements
Contents
Throughout this manual are special
“Attention Statements”.
IMPORTANT!
The operational procedures described in this manual are intended to help you get the
most from this unit, and to protect you and others from harm. These procedures are
guidelines for safe operation under most conditions, and are not intended to replace
any safety rules and/or laws that may be in force in your area.
If you have questions regarding your 270-series unit, or if you do not understand some-
thing in this manual, your Shindaiwa dealer will be glad to assist you.
You may also contact YAMABIKO CORPORATION at the address printed on the back
of this manual.
CAUTION!
A statement preceded by the word
“CAUTION” contains information that
should be acted upon to avoid damag-
ing your 270-series unit.
IMPORTANT!
A statement preceded by the word
“IMPORTANT” is one that possesses
special signi cance.
NOTE:
A statement preceded by the word “NOTE”
contains information that is handy to know
and may make your job easier.
Introduction
Attention Statements .............................. 2
General Safety Instructions .................... 2
Safety Labels .......................................... 4
Product Description ................................ 5
Speci cations ......................................... 5
Assembly ................................................ 6
Mixing Fuel ........................................... 12
Starting the Engine ............................... 13
Stopping the Engine ............................. 13
Adjusting Engine Idle ........................... 14
Checking Unit Condition ....................... 14
Shoulder Strap...................................... 15
Cutting Grass (Trimmer Head) ............ 15
Using a Brushcutter Blade .................... 16
Maintenance ......................................... 17
Long Term Storage ............................... 19
Blade Sharpening ................................. 19
Troubleshooting Guide ......................... 20
PAGE
The Shindaiwa 270-series of hand-held
power tools has been designed and
built to deliver superior performance and
reliability without compromise to quality,
comfort, or durability.
Shindaiwa high performance engines rep-
resent the leading edge of 2-cycle engine
technology, delivering exceptionally high
power from remarkably low displacement
and weight. As an owner/operator, you’ll
soon discover for yourself why Shindaiwa
is simply in a class by itself!
IMPORTANT!
The information contained in this manual
describes units available at the time of
publication.
While every attempt has been made to
give you the very latest information about
your Shindaiwa product, there may be
some differences between your 270-se-
ries unit and what is described here.
YAMABIKO CORPORATION reserves the
right to make changes to products without
prior noti cation, and without obligation
to make alterations to units previously
manufactured.
WARNING!
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth de-
fects or other reproductive harm.
WARNING!
A statement preceded by the trian-
gular attention symbol and the word
“WARNING” contains information that
should be acted upon to prevent seri-
ous bodily injury.
Read and follow this
operators manual.
Failure to do so could
result in serious injury.
Wear eye and hearing
protection at all times
during the operation
of this unit.
Keep bystanders
at least 50 feet (15 m)
away during operation.
Beware of thrown or
ricocheted objects.
Do not operate this unit with a
blade unless the unit is equipped
with a Shindaiwa-approved
handlebar or barrier.
Always wear a harness when
operating this unit with a blade.
A harness is also recommended
when using trimmer line.
If unit is used as a brushcutter,
beware of blade thrust. A jammed
blade can cause the unit to jerk
suddenly and may cause the
operator to lose control of the unit.
Work Safely
Trimmers and brushcutters run at very
high speeds and can do serious damage
or injury if they are misused or abused.
Never allow a person without training or
instruction to operate this unit!
WARNING!
Use Good Judgment
ALWAYS wear eye protection to shield
against thrown objects.
NEVER run the engine when transport-
ing the unit.
NEVER run the engine indoors! Make
sure there is always good ventilation.
Fumes from engine exhaust can cause
serious injury or death.
ALWAYS clear your work area of trash
or hidden debris that could be thrown
back at you or toward a bystander.
ALWAYS use the proper cutting tool for
the job.
ALWAYS stop the engine immediately
if the unit suddenly begins to vibrate
or shake. Inspect for broken, missing
or improperly installed parts or attach-
ments.
NEVER extend trimming line beyond
the length speci ed for your unit.
ALWAYS keep the unit as clean as
practical. Keep it free of loose vegeta-
tion, mud, etc.
ALWAYS hold the unit rmly with both
hands when cutting or trimming, and
maintain control at all times.
ALWAYS keep the handles clean.
ALWAYS disconnect the spark plug
wire before performing any main ten-
ance work.
ALWAYS, if a saw blade should bind
fast in a cut, shut off the engine imme-
diately. Push the branch or tree to ease
the bind and free the blade.
WARNING!
Never make unauthorized attachment
installations.
Beware of high temperature areas.
3
WARNING!
Never operate power
equipment of any kind if you are tired
or if you are under the in uence of
alcohol, drugs, medication or any other
substance that could affect your ability
or judgement.
WARNING!
Minimize the Risk of Fire!
NEVER smoke or light res near the
trimmer or brushcutter.
ALWAYS stop the engine and allow it
to cool before refueling. Avoid over ll-
ing and wipe off any fuel that may have
spilled.
ALWAYS inspect the unit for fuel leaks
before each use. During each re ll,
check that no fuel leaks from around
the fuel cap and/or fuel tank. If fuel
leaks are evident, stop using the unit
immediately. Fuel leaks must be re-
paired before using the unit.
ALWAYS move the unit to a place well
away from a fuel storage area or other
readily ammable materials before
starting the engine.
NEVER place ammable material
close to the engine muf er.
NEVER operate the engine without the
spark arrester screen in place.
Stay Alert
You must be physically and mentally t to
operate this unit safely.
General Safety Instructions
The Properly Equipped Operator
Figure 1
Always wear a harness
when operating a unit
equipped with a blade.
Wear appropriate footwear (non-skid
boots or shoes): do not wear open-
toed shoes or sandals. Never work
barefooted!
Wear hearing protection devices and a
broad-brimmed hat or helmet.
Wear close-¿ tting cloth-
ing to protect legs and
arms. Gloves offer added
protection and are strongly
recommended. Do not wear
clothing or jewelry that
could get caught in
machinery or underbrush.
NEVER wear shorts!
Always wear eye
protection such as goggles or
safety glasses.
Always operate with both
hands ¿ rmly gripping the
machine.
When operating with a blade,
make sure the handle is posi-
tioned to
provide you with maximum
protection from contacting the
blade.
Keep away from the rotating
trimming line or blade at all
times, and never lift a moving
attachment above waist-high.
Keep a proper
footing and do not
overreach—maintain
your balance at all
times during
operation.
Always make sure
the appropriate cutting
attachment shield is
correctly installed.
4
Safety Labels
Figure 3
IMPORTANT!
Safety and Operation Information Labels:
Make sure all information labels are
un damaged and readable. Immediately
replace damaged or missing information
labels. New labels are available from
your local authorized Shindaiwa dealer.
C270
Be Aware of the Working Environment
Avoid long-term opera-
tion in very hot or very
cold weather.
Make sure bystanders or observers
outside the 50-foot “danger zone”
wear eye protection.
Be extremely
careful of slippery
terrain, espe-
cially during rainy
weather.
Always make sure
the appropriate
cutting attachment
shield is correctly
installed.
Beware of a coasting blade
when brushcutting
or edging. A coasting blade
can injure while it continues
to spin after the throttle trig-
ger is released or after the
engine is stopped.
When operating in rocky terrain or near
electric wires or fences, use extreme
caution to avoid contacting such items
with the cutting attachment.
Be constantly alert for objects and debris that could be thrown
either from the rotating cutting attachment or bounced from a
hard surface.
If contact is made
with a hard object,
stop the engine
and inspect the
cutting attachment
for damage.
50 FEET
Reduce the risk of
bystanders being
struck by À ying
debris. Make sure no
one is within 50 feet
(15 meters)—that’s
about 16 paces—of
an
operating attach-
ment.
Figure 2
This label indicates the
minimum distance between
front handle and rear grip
per ANSI B175.3.
T270
5
WARNING!
Do not make unauthorized modi ca-
tions or alterations to either of these
units or their components.
Using the accompanying illustrations as
a guide, familiarize yourself with this
unit and its various components.
Understanding your machine helps ensure
top performance, long service life, and
safer operation.
Figure 4
Product Description
T270 Grass Trimmer
Handle
Throttle
Trigger
Cutting
Attachment Shield
Outer Tube
Grip
Gearcase
Barrier Bar
Fuel
Tank
Cylinder
Cover
Spark Plug
Ignition Switch
Hanger
Trimmer Head
Line Cutter
Cylinder Cover
C270 Brushcutter
Handlebar
Fuel
Tank
Throttle
Trigger
Gearcase
Brushcutter Blade
Cutting
Attachment Shield
Outer Tube
Hanger
Spark Plug
Ignition Switch
Engine Model.......................................................... S270 Engine
Dry Weight, T270 ......................................... 5.6 kg/
12.3 pounds
Dry Weight, C270 ........................................ 6.2 kg/13.7 pounds
Type ..................................... 2-cycle, vertical cylinder, air cooled
Bore x Stroke ........................... 34 mm x 30 mm/
1.3 in. x 1.2 in.
Displacement ................................................... 27.2cc/1.7 cu. in.
Maximum Power Output ....................................... 1.1 kW/1.5 hp
Operating RPM Range .......................... 4500-9000 RPM (min
-1
)
Transmission Type..................................... Automatic centrifugal
clutch through bevel gears
Fuel............................................. Gasoline-oil mixture, 50:1 with
Shindaiwa 2-cycle Mixing Oil
Fuel Tank Capacity ..................................... 670 ml
/22.6 ounces
Carburetion ..................................................TK, Diaphragm type
Ignition ............................... Fully electronic, transistor controlled
Spark Plug ..............................................................NGK BMR6A
Air Cleaner........................................................... Foam Element
Starting Method .................................................................Recoil
Stopping Method ............................Slide switch, grounding type
Handle ................................... Loop handle w/Barrier Bar (T270)
Handlebar (C270)
Speci¿ cations
Prior to Assembly
Before assembling this product, please
make sure you have all the components
required for a complete unit:
■ Engine assembly (Powerhead).
■ Outer tube assembly.
■ Cutting attachment shield.
Carefully inspect all components
for damage.
IMPORTANT!
The terms “left,” “left-hand,” and “LH”:
“right,” “right-hand,” and “RH”; “front” and
“rear” refer to directions as viewed by the
operator during normal operation of this
product.
Speci cations are subject to change without notice.
■ Cutting attachment (trimmer head or
brushcutter blade).
■ Correct operator handle for application.
■ Tool kit including: hex wrenches, screw-
driver, combination spark plug wrench.
■ Goggles
6
Driveshaft/Powerhead T270/C270
Grip
1. Use the 4 mm hex wrench to loosen
the outer tube clamp screw located on
the fan cover housing on the power-
head. Use the 5 mm hex wrench to
remove the index screw from the outer
tube clamp fan cover housing.
Connect the Outer Tube
to the Powerhead.
Main Shaft
Grip must butt-¿ t against
the tube clamp.
Tube Clamp
Hex Wrench
Index
Hole
Clamp Screw
Index Bolt
CAUTION!
Do not to force the tube into the pow-
erhead! If installation is dif cult, slowly
rotate the outer tube or mainshaft until
you feel the mainshaft splines engage
inside the fan cover housing.
4. Rotate the shaft tube until the gearcase
output shaft faces “down,” and the
threaded index screw hole in the fan
cover tube clamp aligns with the index
hole in the shaft tube. Install and
tighten the index bolt, and then rmly
tighten the tube clamp screw.
Outer Tube
Figure 6
Figure 5
Assembly
2. Place the powerhead on a at surface,
resting on its built-in stand (spark plug
facing “up”).
3. Slide the outer tube assembly into the
powerhead until the grip on the shaft
tube touches the tube clamp.
See Figure 6.
7
27005
Install the Throttle Cable T270
CAUTION!
Overtightening the throttle assembly
screws can permanently damage plas-
tic throttle components!
Grip
Throttle Cable
Ground Lead
Ignition Wire
Vinyl Tube
Figure 7
Figure 8
Assembly
Throttle
Control
1. Loosen the throttle lever clamp screw
A. See Figure 7.
2. Slide the throttle assembly forward
approximately 2 inches.
See Figure 7.
3. Starting from the powerhead, push the
throttle cable through the handgrip until
it appears at the throttle assembly.
4. Insert the throttle cable end into the
socket on the throttle lever and push
the cable past the retainer.
5. Push the throttle assembly back into its
original position.
6. Tighten the throttle lever clamp
screw A.
Throttle Lever
Clamp Screw A
Test the throttle lever for proper “free play”
of approximately 7 mm in the idle position.
If necessary, adjustments can be made
at the carburetor by loosening the cable
locknut and then raising or lowering the
cable adjuster as required. See Figure 9.
7 mm
Free
Play
Cable Adjuster
Locknut
Adjusting Free Play
27043
Figure 9
7. Using nger pressure only, connect the
ignition wire onto the connector on the
powerhead. Secure the ground lead to
the ground lead screw . See Figure 8.
8. Check throttle free play and adjust if
required.
Ground Lead
Screw
27007
Handle on the Outer Tube T270
Handle
Barrier Bar
Handle Retaining
Screws
Outer Tube
Figure 10
Assembly
Handle Positioning Label
Nuts
Connect the Handle
to the Outer Tube.
1. Position the handle on the outer tube
forward of Handle Positioning Label as
shown in Figure 10.
2. Install the handle and barrier bar onto
the outer tube with the socket head cap
screws and nuts as shown in Figure 10.
Tighten the screws nger-tight ONLY at
this time.
3. Locate the handle in the best position
for operator comfort (usually about 10
inches ahead of the throttle housing).
4. Secure the handle by alternately tight-
ening the four socket-head screws in a
diagonal or “crisscross” fashion.
8
27008
Handle C270
1. Use the 4 mm hex wrench to remove
the lower cap retaining screws from the
handlebar bracket. Remove the cap
from the bracket, and note the position
of the two spacers installed between
the bracket halves.
See Figure 11.
2. Position the handle on the outer tube
forward of Handle Positioning Label as
shown in Figure 11. Reassemble the
lower cap to the handlebar bracket in
the reverse order of disassembly.
3. Locate the handle in the best position
for operator comfort.
4. Firmly tighten both lower cap retaining
screws.
Handlebar
Spacer
Lower Cap
Retaining Screws
Lower Cap
Figure 11
Assembly
Linkage and Ignition Leads C270
CAUTION!
Overtightening the throttle body screws
can permanently damage the throttle
housing!
5. Test the throttle lever for smooth op-
eration. If any stiffness or binding are
noted, repeat Steps 1–4.
1. Unscrew the two throttle lever cover
screws, and then separate the throttle
control halves. See Figure 12.
2. Working from the powerhead, route
the cable assembly through the rub-
ber cable guide and then up through
the handlebar grip as shown. Use the
6-inch nylon tie-strap to secure the
cable assembly to the handlebar.
3. Insert the throttle cable end into the
molded receptacle in the throttle lever,
and then lay the throttle cable wire in
the molded slot in the throttle body.
Connect the two ignition switch wires
to the matching terminals in the throttle
cover.
NOTE:
The two ignition switch wires are inter-
changeable on the switch terminals.
4. In the reverse order of removal,
reassemble the throttle body on the
handlebar.
Figure 12
Cover
Ignition
Wires
Throttle
Cable
7 mm
Free
Play
Throttle
Control
Handlebar
Grip
Cable
Adjuster
Locknut
Molded
Slot
Assembly
6. Test the throttle lever for proper “free
play” of approximately 7 mm in the idle
position. If necessary, adjustments can
be made at the carburetor by loosening
the cable locknut and then raising or
lowering the cable adjuster as required.
See Figure 12.
Handle Positioning Label
9
Assembly
Cutting Attachment Shield T270/C270
WARNING!
The line cutter is very sharp. Wear
gloves to protect your hands when
handling.
To Change Position of Line Cutter.
1. Remove the 2 hex screws with a
4 mm hex wrench. See Figure 13A.
2. Rotate line cutter. See Figure 13A.
3. Reinstall the two hex screws and
tighten them securely.
NOTE:
Be careful to not lose the 2 nuts in the cut-
ting attachment shield, they are not cap-
tured.
The line cutter can be positioned in
2 positions to obtain different line length
for cutting.
26013
Figure 13
Cutting
Attachment
Shield
Outer
Tube
Socket-head
Cap Screws
Bracket
Shim
Clamp
Screw
Shim
Retaining
Nut
Cutting
Attachment
Shield Mounting
Plate
Line Cutter
Figure 13A
Hex
Screws
Nuts
Install the Cutting Attachment Shield.
1. Insert the cutting attachment shield
between the outer tube and the cutting
attachment shield mounting plate.
See Figure 13.
WARNING!
NEVER operate the unit without the
cutting attachment shield installed and
tightly secured!
CAUTION!
Make sure the clamp screw and retain-
ing nut are securely tightened before
tightening the four socket-head cap
screws.
NOTE:
It may be necessary to loosen the retaining
nut and clamp screw to adjust cutting attach-
ment shield mounting plate.
2. Fit the two shims and the bracket over
the outer tube and loosely install the
four socket-head cap screws. See
Figure 13.
Sub-Shield C270.
(when trimmer head is in use)
1. Attach the shield extension to the
cutting attachment shield.
WARNING!
NEVER use this machine without sub-
shield when using a trimmer head.
CAUTION!
Make sure the sub-guard is completely
hooked at the hook receiver.
Sub-shield
Hook
Hook
Receiver
Cutting Attachment Shield
T270
C270
Shim
Shim
Nut
Upper Clamp
Cutting
Attachment
Shield
3. Tighten the four socket-head cap
screws to secure the cutting attach-
ment shield.
Cutting Attachment
Shield Mounting
Plate
Socket-head
Cap Screws
10
27017
27016
27014
27014
Trimmer Head T270/C270
NOTE:
The T/C 270 is shipped with Holder A, the
blade retainer, Holder B, and also the shaft
bolt and bolt guard installed. The shaft bolt
is a LEFT-HAND thread and is removed in a
CLOCKWISE ROTATION!
With the gearcase output shaft facing
“up” and both holders removed...
Install
Holder A
Install
Holder B
Holder B
Holder
A
Hex Wrench
Hand-tighten
trimmer head
Safety
Clip
The T270 should now be completely assembled.
Figure 14
Figure 15 Figure 16
Assembly
1. Position Holder A as shown and
slide it onto the gearcase shaft.
See Figure 14.
2. Install and center the safety clip on the
gearcase shaft. See Figure 14.
3. Install Holder B on the gearcase shaft.
The machined boss on Holder A must
engage with the recess on Holder B.
See Figure 14.
4. Rotate the gearshaft and holders
until the hole in Holder A aligns with
the matching hole in the gearcase
ange, and then lock the holder to the
gearcase by inserting the long end of
the hex wrench through both holes.
See Figure 15.
5. Using a counter-clockwise rotation
and hand pressure alone, thread and
securely tighten the trimmer head into
the gearcase shaft. See Figure 16.
6. Remove the hex wrench from the
gearcase and holders.
Blade Selection C270
Plastic/Nylon Grass/Weed Blades
may be used where ever the nylon line
head is used. DO NOT use this blade
for heavy weeds or brush.
8 Tooth Weed/Grass Blade is de-
signed for grass, garden debris and
thick weeds. DO NOT use this blade
for brush or heavy woody growth, 19
mm diameter or larger.
80 Tooth Brush Blade is designed for
cutting brush and woody growth up to
13 mm diameter.
22 Tooth Clearing Blade is designed
for dense thickets and saplings up to
64 mm diameter.
WARNING!
Use only cutting attachments
recommended by YAMABIKO
CORPORATION.
WARNING!
The type of BLADE used MUST be
matched to the type and size of mate-
rial cut.
An improper or dull blade can cause
serious personal injury. Blades MUST
be sharp. Dull blades increase the
chance of kick-out and injury to yourself
and bystanders.
11
27018
27019
Brushcutter Blade C270
NOTE:
The C270 is shipped with Holder A, the
safety clip, Holder B, and also the shaft bolt
and bolt guard installed. The shaft bolt is a
LEFT-HAND THREAD AND IS REMOVED
BY TURNING CLOCKWISE!
With the gearcase output shaft facing
“up” and both holders removed...
1. Position Holder A as shown and slide it
onto the gearcase shaft.
2. Install the safety clip off center on the
gearcase shaft.
3. Slide the blade over the safety clip and
onto the ange on Holder A. Lock the
blade on the shaft by centering the
safety clip as shown.
4. Install Holder B on the gearcase shaft.
The machined recess in Holder B must
completely surround the safety clip,
and both holders must be at against
the surface of the blade.
5. Rotate the gearshaft and holders
until the hole in Holder A aligns with
the matching hole in the gearcase
ange. Lock the assembly by inserting
the long end of the hex wrench
through both holes. See Figure 17.
6. Install the shaft bolt and bolt guard as
shown, and then use the small end
of the spark plug wrench to securely
tighten the shaft bolt in a counter-clock-
wise direction. See Figure 18.
7. Remove the hex wrench from the
gearcase and holders.
WARNING!
Never operate the brushcutter without
the safety clip installed and both hold-
ers tightly secured and at against the
blade surface!
Install the
Safety Clip
Off-center
Slip the Cutting
Blade in Place
Center the
Safety Clip
Shaft Bolt
Bolt Guard
Holder B
Gear Shaft
Holder A
Hex Wrench
Figure 17
Assembly
Safety Clip
Tighten the Assembly
BLADE NOT SHOWN
FOR CLARITY!
Hex Wrench
Install Holder B
Saw
Blade
Spark Plug
Wrench
Figure 18
The C270 should now be completely assembled.
12
Mixing Fuel
WARNING!
Minimize the Risk of Fire!
■ STOP engine before refueling.
■ ALWAYS allow the engine to cool
before refueling!
■ Wipe all spilled fuel and move the
engine at least 10 feet (3 meters)
from the fueling point and source
before restarting!
■ NEVER start or operate this unit if
there is a fuel leak or the carburetor,
fuel lines, fuel tank and/or fuel cap
are damaged.
■ NEVER smoke or light any res near
the engine or fuel source!
■ NEVER place any ammable mate-
rial near the engine muf er!
■ NEVER operate the engine without
the muf er and spark arrester in
good working condition.
1. Place the trimmer on a at, level
surface.
2. Clear any dirt or other debris from
around the fuel ller cap.
3. Remove the fuel cap, and ll the tank
with clean, fresh fuel.
4. Reinstall the fuel ller cap and tighten
rmly.
Filling the Fuel Tank
IMPORTANT!
Mix only enough fuel for your immediate
needs! If fuel must be stored longer than
30 days and oil with fuel stabilizer
is not used, it should rst be treated with a
fuel stabilizer such as STA-BIL™.
CAUTION!
This engine is designed to operate on
a 50:1 mixture consisting of unleaded
gasoline and 2-cycle mixing oil only.
Use of non-approved mixing oils can
lead to excessive carbon deposits.
CAUTION!
■ Some types of gasoline contain al-
cohol as an oxygenate. Oxygenated
gasoline may cause increased op-
erating temperatures. Under certain
conditions, alcohol-based gasoline
may also reduce the lubricating
qualities of some 2-cycle mixing oils.
■ Never use any type of gasoline
containing more than 10% alcohol
by volume! Generic oils and some
outboard oils may not be intended
for use in high-performance 2-cycle
type engines, and should never be
used in your Shindaiwa engine.
■ Use only fresh, clean unleaded gaso-
line with a pump octane of 87 or higher.
■ Mix with 50:1 Shindaiwa Premium
2-cycle mixing oil or with an equivalent
high quality 2-cycle mixing oil.
Examples of 50:1 mixing quantities
■ 1 gallon of gasoline to 2.6 oz. mixing
oil.
■ 5 liters of gasoline to 100 ml. mixing oil.
13
27025
Choke Control
(closed position)
Starting the Engine
5. While holding the outer tube rmly
with one hand, slowly pull the recoil
starter handle until resistance is felt,
then pull quickly to start the engine.
See Figure 22.
1. Slide the ignition switch to the “ON”
position. See Figure 19.
2. Set the throttle lever to the “fast idle”;
a. Squeeze the throttle lever toward the
handgrip on the shaft tube.
b. Depress and hold the throttle lock
button.
c. While depressing the throttle lock
button, release the throttle lever.
See Figure 19.
3. Press the primer bulb until fuel can be
seen owing in the transparent return
tube. See Figure 20.
4. Set the choke lever to the CLOSED
position if engine is cold.
See Figure 21.
Make sure the
cutting head
is clear of
obstructions!
NOTE:
Engine ignition is controlled by a two-posi-
tion on-off switch mounted on the throttle
body. This switch is typically labeled “I” for
ON and “O” for OFF.
Figure 21
Figure 22
IMPORTANT!
The primer system only pushes fuel
through the carburetor. Repeatedly
pressing the primer bulb will not ood the
engine with fuel.
CAUTION!
Do not pull the recoil starter to the end
of the rope travel. Pulling the recoil
starter to the end of the rope travel can
damage the starter.
Brushcutters
Throttle Lock But-
ton
Grass Trimmers
IGNITION
SWITCH ON
Figure 19
Primer Bulb
Return Tube
Figure 20
27021
WARNING!
Never start the engine from the
operating position.
WARNING!
The cutting attachment may rotate
when the engine is started!
When the Engine Starts...
■ After the engine starts, allow the en-
gine to warm up at idle 2 or 3 minutes
before operating the unit.
■ After the engine is warm, pick
up the unit and clip on the shoulder
strap if so equipped. See page 15.
■ Advancing the throttle makes the cut-
ting attachment turn faster; releasing
the throttle permits the attachment to
stop turning. If the cutting attachment
continues to rotate when the engine
returns to idle, carburetor idle speed
should be adjusted (see page 14).
IMPORTANT!
If the engine fails to start after several at-
tempts with the choke in the closed posi-
tion, the engine may be ooded with fuel.
If ooding is suspected, move the choke
lever to the open position and repeatedly
pull the recoil starter to remove excess
fuel and start the engine. If the engine still
fails to start, refer to the troubleshooting
section of this manual.
6. When the engine starts, slowly move
the choke lever to the “OPEN” position.
See Figure 23. (If the engine stops af-
ter the initial start, close the choke and
restart.)
Figure 23
27027
Choke Control
(open position)
Idle the engine brie y before stopping
(about 2 minutes), then slide the ignition
switch to the “O” (OFF) position.
See Figure 24.
Stopping the Engine
Figure 24
7. Operating the throttle will automatically
disengage the fast idle setting.
Brushcutters
IGNITION
SWITCH
OFF
27029
Grass Trimmers
14
Adjusting Engine Idle
The engine must return to idle speed
whenever the throttle lever is released.
Idle speed is adjustable, and must be set
low enough to permit the engine clutch to
disengage the cutting attachment when
the throttle is released.
Adjustment Procedure
1. Start the engine, and then allow it to
idle 2-3 minutes until warm.
2. If the cutting attachment rotates at
engine idle, reduce idle speed by turn-
ing the idle adjustment screw counter
clockwise. See Figure 25.
3. If a tachometer is available, the engine
idle speed should be nal-adjusted to
3,000 (±250) RPM (min
-1
).
Non-Emission Compliance Engines
Initial carburetor mixture adjustments on
non-emission compliance engines are:
Slow air screw 0-1/2 turn
Main adjusting screw 2 turns ± 1/4
Adjustments may vary because of altitudes
and other factors. See your authorized
Shindaiwa dealer for correct adjustments.
WARNING!
The cutting attachment must NEVER
rotate at engine idle speeds!
NOTE:
Carburetor mixture adjustments are preset
at the factory and cannot be serviced in the
eld.
27030
Idle
Adjusting Screw
(All Units)
Figure 25
Slow Air
Screw
(Non-Emission
Compliance
Units Only)
Main Carburetor
Adjustment Screw
(Non-Emission
Compliance Units Only)
NEVER operate the unit with the cut-
ting attachment shield or other protective
devices (harness, ignition switch, blade
retention clip, etc.) removed!
WARNING!
A cutting attachment shield or other
protective device is no guarantee of
protection against thrown objects. YOU
MUST ALWAYS GUARD AGAINST
FLYING DEBRIS!
Check Unit Condition
Use only authorized Shindaiwa parts and
accessories with your Shindaiwa trimmer
or brushcutter. Do not make modi cations
to the unit without the written approval of
YAMABIKO CORPORATION.
ALWAYS make sure the cutting attach-
ment is properly installed and rmly tight-
ened before operation.
NEVER use a cracked or warped cutting
attachment: replace it with a serviceable
one.
ALWAYS make sure the cutting attach-
ment ts properly into the appropriate
cutter holder. If a properly installed attach-
ment vibrates, replace the attachment with
a new one and re-check.
ALWAYS stop the engine immediately and
check for damage if you strike a foreign
object or if the unit becomes tangled.
Do not operate with broken or damaged
equipment.
NEVER allow the engine to run at high
RPM’s without a load. Doing so could
damage the engine.
NEVER operate a unit with worn or dam-
aged fasteners or attachment holders.
NEVER cut with dull blades. Doing so will
increase the risk of blade thrust and may
also damage your equipment.
15
Hold the grass
trimmer so the
trimmer head is
angled slightly into
the area to be cut.
To ensure maxi-
mum trimmer-line
service life, cut
only with the tip of the trimmer line. Cut
grass by swinging the machine’s trimmer
head from right to left. Keep the trimmer
head horizontal. See Figure 28.
Edging
Tilt the handle about
100° to the right
(from horizontal) and
move forward, holding
the trimmer vertical.
See Figure 29.
Shoulder Strap
Shoulder Strap
recommended
for use with grass
trimmers
NOTE:
Although a shoulder strap is not required
for use with a trimmer head, a shoulder
strap can increase operator comfort during
extended periods of operation.
WARNING!
Always wear a shoulder strap when
operating this unit with a blade. A
shoulder strap is also recommend
when using trimmer line.
IMPORTANT!
Adjust the shoulder strap or harness so
the shoulder pad rests comfortably on the
off-side shoulder and the cutting path of
the cutting attachment is parallel to the
ground. Make sure all hooks and adjust-
ment devices are secure.
C270 or using a T270 with a Blade
T270 with a Trimmer Head
27032A
Figure 26
Figure 27
27033
27034
Cutting Grass—Units Equipped with a Trimmer Head
Your Shindaiwa T270 Grass Trimmer
may be equipped with one of several
Shindaiwa trimmer head models, each
with features for speci c applications and/
or operational requirements.
CAUTION!
Do not push the rotating line into trees,
wire fences or any material that could
tangle or break line ends.
■ Flail. This device, designed for clearing
weeds and light brush, features three
nylon blades attached to the head by
pivots.
CAUTION!
Operation at low RPM can lead to
premature clutch failure.
Trimming and Mowing Grass
Figure 28
Figure 29
NOTE:
A grass trimmer head can also be tted to
the Shindaiwa C270 Brushcutter.
For proper operation, always refer to the
instructions accompanying the trimmer
head being used. Available trimmer head
styles include:
■ Semi-automatic. Trimmer line is
indexed when the operator taps the
trimmer head on the ground during
operation.
■ Manual. The operator indexes line
manually while the grass trimmer is
stopped.
■ Fixed. The operator must stop the ma-
chine and add new lengths of trimmer
line manually.
Engine Operating Speeds
Operate the unit at full throttle while cut-
ting grass.
16
27036
WARNING!
When making vertical cuts, never allow
the blade to exceed waist height.
WARNING!
■ When cutting wood with a blade,
feed the blade slowly never strike
or “slam” the spinning blade against
the wood.
■ DO NOT use 2-tooth or non-
Shindaiwa approved 4-tooth cutting
blades with Shindaiwa trimmers and
brushcutters.
The blade rotates counter-clockwise. For
best performance and to minimize being
struck by debris, move the blade from
right to left while advancing on your work.
Position the blade so cuts are made
between the blade’s 8 o’clock and 10
o’clock positions (as viewed from above).
DO NOT cut between the 10 o’clock and 5
o’clock positions. See Figure 30.
Cut on the left side
of the blade. KEEP
YOUR BODY
OUTSIDE THE
PATH OF BLADE
ROTATION
Hold the brushcutter with the blade at a
90° angle to the ground so the blade’s
bottom edge rotates toward the operator.
Move the blade from top to bottom
through the cut, and cut only with the bot-
tom edge of the blade. See Figure 31.
Figure 31
Vertical Cuts
Blade Thrust
‘Blade thrust’ is a sudden sideways or
backward motion of the brushcutter. Such
motion may occur when the blade jams
or catches on an object such as a sapling
tree or tree stump. BE CONSTANTLY
ALERT FOR BLADE THRUST AND
GUARD AGAINST ITS EFFECTS!
Brushcutter Handlebar
A brushcutter’s handlebar or barrier bar
helps prevent the operator from mov-
ing forward or the unit moving rearward;
thus preventing inadvertent bodily
contact with the blade. ALWAYS KEEP
THE HANDLEBAR OR BARRIER BAR
SECURELY IN PLACE ON THE UNIT!
Brushcutter Shoulder Strap
A shoulder strap provides additional
protection against blade thrust. Plus, a
shoulder strap gives signi cant support
and comfort to help ensure safe and ef-
cient operation.
When operating a trimmer or brushcutter,
make sure both the handle and shoul-
der strap are adjusted to the size of the
operator using the unit.
Using A Brushcutter Blade C270
WARNING!
■ Before working with a blade-
equipped unit, always inspect and
clean the area of objects that could
interfere with or damage the blade.
■ Never use a blade near sidewalks,
fence posts, buildings or other
objects that could cause injury or
damage.
■ Never use a blade for purposes
other than those for which it was
designed.
■ Whenever you strike a hard ob-
ject with a blade, always stop the
brushcutter and carefully inspect
the blade for damage. NEVER
OPERATE THE BRUSHCUTTER
WITH A DAMAGED BLADE!
■ A blade-equipped unit must be
equipped with a bicycle-type handle-
bar or barrier bar as well as a har-
ness or shoulder strap.
■ Always make sure the cutting at-
tachment shield is properly installed
before operating the unit.
Engine Operating Speeds
Operate the unit at full throttle while cut-
ting. Best fuel ef ciency is obtained by
releasing the throttle when swinging back
after a cut.
■ To prevent possible engine damage, do
not allow the brushcutter to run at high
speeds without a load.
■ Avoid operating the engine at low
speeds. Doing so can lead to rapid
clutch wear. In addition, slow-speed op-
eration tends to cause grass and debris
to wrap around the cutting head.
Figure 30
D
O
N
O
T
C
U
T
Ten
O'clock
OK To Cut
Five
O'clock
Blade
Rotation
Eight
O'clock
17
Daily Maintenance
27037
Prior to each work day, perform the following:
Remove and clean
the element
10-hour Maintenance
Every 10-Hours of operation
(more frequently in dusty or dirty
conditions):
■ Remove the air cleaner element and
clean it thoroughly with soap and water.
Rinse and squeeze out excess water
and reassemble the element to the
carburetor.
CAUTION!
Do not operate the unit if the air
cleaner or element is damaged, or if
the element is wet.
Figure 32
■ Check for loose or missing screws or
components. Make sure the cutting at-
tachment is securely fastened.
■ Check the unit for leaking fuel or
grease.
Maintenance
WARNING!
Non-standard parts may not operate
properly with your unit and may cause
damage and lead to personal injury.
MufÀ er
This unit must never be operated with a
faulty or missing spark arrester or muf-
er. Make sure the muf er is well secured
and in good condition. A worn or dam-
aged muf er is a re hazard and may also
cause hearing loss.
Spark Plug
Keep the spark plug and wire connections
tight and clean.
Fasteners
Make sure nuts, bolts, and screws (except
carburetor adjusting screws) are tight.
WARNING!
■ Never repair a damaged blade by
welding, straightening, or by modify-
ing its shape. An altered blade may
break during operation, resulting in
serious personal injury.
■ DO NOT use 2-tooth or non-
Shindaiwa approved 4-tooth cutting
blades on Shindaiwa trimmers or
brushcutters.
■ Blades are not interchangeable
between Shindaiwa edgers and trim-
mer/brushcutter models. Operating
any unit with a blade or attachment
not approved for that unit can be
hazardous and may cause serious
injury.
WARNING!
Before performing any maintenance,
repair, or cleaning work on your unit,
make sure the engine and cutting
attachment are completely stopped.
Disconnect the spark plug wire before
performing service or maintenance
work.
IMPORTANT!
MAINTENANCE, REPLACEMENT OR
REPAIR OF EMISSION CONTROL
DEVICES AND SYSTEMS MAY BE
PERFORMED BY ANY REPAIR
ESTABLISHMENT OR INDIVIDUAL;
HOWEVER, WARRANTY REPAIRS
MUST BE PERFORMED BY A DEALER
OR SERVICE CENTER AUTHORIZED
BY YAMABIKO CORPORATION THE USE
OF PARTS THAT ARE NOT EQUIVALENT
IN PERFORMANCE AND DURABILITY TO
AUTHORIZED PARTS MAY IMPAIR THE
EFFECTIVENESS OF THE EMISSION
CONTROL SYSTEM AND MAY HAVE
A BEARING ON THE OUTCOME OF A
WARRANTY CLAIM.
NOTE:
Using non-standard replacement parts could
invalidate your Shindaiwa warranty.
Blades
Keep blades sharp and check blade
condition frequently. If a blade’s perfor-
mance changes suddenly, stop the engine
and check the blade for cracks or other
damage. Replace a damaged blade
IMMEDIATELY!
■ Remove any dirt and debris from the
engine, check the cooling ns and air
cleaner for clogging, and clean them as
necessary.
■ Carefully remove any accumulations of
dirt or debris from the muf er and fuel
tank. Dirt build-up in these areas can
lead to engine overheating, premature
wear, or re.
18
27040
27031
Hooked
Wire
10/15-hour Maintenance
Every 10 to 15 hours of operation:
■ Remove and clean the spark plug.
Adjust the spark plug electrode gap to
0.024 inch (0.6 mm). If the plug must
be replaced, use only a NGK BMR6A.
CAUTION!
Before removing the spark plug, clean
the area around the plug to prevent dirt
and dust from getting into the internal
engine parts
Clean the spark plug
and check the gap at
the electrode.
27038
0.024"
(0.6 mm)
NGK
BMR6A
Figure 33
50-hour Maintenance
Every 50 hours of operation
(more frequently in dusty or
dirty conditions):
■ Remove and clean the cylinder cover
and clean grass and dirt from the cylin-
der ns.
■ Remove the cutting attachment and the
gear shaft collar, and force new grease
into the gearcase until the old grease
has been pushed out. Use only lithium-
base grease (such as Shindaiwa 13-57
Gearcase Lubricant). See Figure 34.
27039
New Grease
Old
Grease
Gear Shaft Collar
■ Use a hooked wire to extract the fuel
lter from inside the fuel tank. Remove
and replace the lter element. Before
reinstalling the lter, inspect the condi-
tion of the fuel line. If damage or dete-
rioration are noted, the 270 unit should
be removed from service until you can
consult with an authorized servicing
dealer. See Figure 35.
Figure 34
Figure 35
CAUTION!
Make sure you do not pierce the
fuel line with the end of the hooked
wire. The line is delicate and can be
damaged easily.
Hard starting or a gradual loss of perfor-
mance can be caused by carbon deposits
lodged in the muf er’s spark arrester
screen.
In such cases, performance can usu-
ally be restored by removing the spark
arrester screen and giving it a thorough
cleaning with a stiff bristle brush.
If carbon deposits are severe or if no per-
formance improvement is noted, your T/C
270 should be returned to your Shindaiwa
dealer for inspection.
WARNING!
Never operate this unit with a damaged
or missing muf er or spark arrester!
Operating with missing or damaged ex-
haust components is a re hazard and
may also damage your hearing.
Muffl er
Arrester
Retaining
Screw
Spark
Arrester
MufÀ er Maintenance
Figure 36
19
Long Term Storage
Whenever the unit will not be used for
30 days or longer, use the following pro-
cedures to prepare it for storage:
■ Clean external parts thoroughly and
apply a light coating of oil to all metal
surfaces.
■ Drain all the fuel from the fuel tank.
IMPORTANT!
All stored fuels should be stabilized
with a fuel stabilizer such as STA-BIL™, if
oil with fuel stabilizer is not used.
To remove the remaining fuel from the
fuel lines and carburetor and with the fuel
drained from the fuel tank.
1. Prime the primer bulb until no more fuel
is passing through.
2. Start and run the engine until stops
running.
3. Repeat steps 1 and 2 until the engine
will no longer start.
■ Remove the spark plug and pour about
1/4 ounce of 2-cycle mixing oil into the
cylinder through the spark plug hole.
Slowly pull the recoil starter 2 or 3
times so oil will evenly coat the interior
of the engine. Reinstall the spark plug.
■ Before storing the unit, repair or re-
place any worn or damaged parts.
■ Remove the air cleaner element from
the carburetor and clean it thoroughly
with soap and water. Let dry before
reinstalling the element.
■ Store the unit in a clean, dust-free area.
CAUTION!
Gasoline stored in the carburetor for
extended periods can cause hard start-
ing, and could also lead to increased
service and maintenance costs.
27042
30
0
27041
When the blade’s cutting edges become
slightly dull, they can be resharpened with
a few strokes of a le.
In order to keep the blade in balance, all
cutting edges must be sharpened equally.
Round
File
Filing Direction
Blade Sharpening
Shindaiwa Tornado™ Blade
To sharpen the cutters on a Shindaiwa
Tornado Blade, use a 7/32-inch round le.
File the leading edge of each tooth to a
razor edge. The top plate of each tooth
should angle back 30°. See Figure 37.
WARNING!
Sharpen the cutting teeth only. DO
NOT alter the contour of the blade in
any way.
Multiple-tooth Circular Blade
Use a round le to maintain a radius of
0.04 to 0.06” (1 to 1.5 mm) at the base of
each tooth. Cutting edges must be offset
equally on each side. See Figure 38.
Round
File
Filing Direction
Figure 37
Figure 38
20
NO
Troubleshooting Guide
Does the engine crank?
Good compression?
Does the tank contain fresh fuel
of the proper grade?
Is fuel visible and moving in the
return line when priming?
Is there spark at the spark plug
wire terminal?
Check the spark plug.
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
Loose spark plug.
Excess wear on cylinder, piston, rings.
Fuel incorrect, stale, or contaminated;
mixture incorrect.
Check for clogged fuel lter and/or vent.
The ignition switch is in “O” (OFF) position.
Shorted ignition ground.
Faulty ignition unit.
If the plug is wet, excess fuel may
be in the cylinder.
The plug is fouled or improperly gapped.
The plug is damaged internally or
of the wrong size.
Consult with an authorized servicing dealer.
Tighten and re-test.
Consult with an authorized servicing dealer.
Re ll with fresh, clean unleaded gasoline with
a pump octane of 87 or higher mixed with 50:1
Shindaiwa Premium 2-cycle mixing oil or with an
equivalent high quality 2-cycle mixing oil.
Clean as required. Restart.
Move switch to “I” (ON) position and re-start.
Consult with an authorized servicing dealer.
Crank the engine with the plug removed, reinstall the
plug, and restart.
Clean and regap the plug to 0.024 inch (0.6 mm).
Restart.
Replace the spark plug with a NGK BMR6A or
equivalent spark plug of the correct heat range.
Adjust the spark plug electrode gap 0.024 inch (0.6
mm).
NO
YES
What To Check Possible Cause Remedy
ENGINE DOES NOT START
NO
YES
NO
YES
YES
NO
YES
Is the engine overheating?
Engine is rough at all speeds.
May also have black smoke and/
or unburned fuel at the exhaust.
Operator is overworking the unit.
Carburetor mixture is too lean.
Improper fuel ratio.
Fan, fan cover, cylinder ns dirty or damaged.
Carbon deposits on the piston or in the muf er.
Clogged air cleaner element.
Loose or damaged spark plug.
Air leakage or clogged fuel line.
Water in the fuel.
Piston seizure.
Faulty carburetor and/or diaphragm.
Overheating condition.
Improper fuel.
Carbon deposits in the combustion chamber.
Shorten trimmer line. Cut at a slower rate.
Consult with an authorized servicing dealer.
Re ll with fresh, clean unleaded gasoline with
a pump octane of 87 or higher mixed with 50:1
Shindaiwa Premium 2-cycle mixing oil or with an
equivalent high quality 2-cycle mixing oil.
Clean, repair or replace as necessary.
Consult with an authorized servicing dealer.
Service the air cleaner.
Tighten or replace.
Replace the spark plug with a NGK BMR6A or
equivalent spark plug of the correct heat range.
Adjust the spark plug electrode gap 0.024 inch (0.6
mm).
Repair or replace fuel lter and/or fuel line.
Replace the fuel. See page 12.
Consult with an authorized servicing dealer.
See above.
Check fuel octane rating; check for presence of
alcohol in the fuel (page 12). Refuel as necessary.
Consult with an authorized servicing dealer.
What To Check Possible Cause Remedy
LOW POWER OUTPUT
Engine is knocking.
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