Shindaiwa HT231, X7502862800 User Manual
SHINDAIWA OWNER / OPERATOR’S MANUAL
HT231 HEDGE TRIMMER
X7502862800
02/10
WARNING
Minimize the risk of injury to yourself and others! Read
this manual and familiarize yourself with the contents.
Always wear eye and hearing protection when operating
this unit.
Introduction
The Shindaiwa 231 series of hand-held power equipment is designed and built to deliver superior performance and
reliability without compromise to quality, comfort, safety or durability. Shindaiwa engines represent the leading edge of highperformance engine technology, delivering exceptionally high power with 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 these instructions describes units available at the time of publication.
Echo, Inc. reserves the right to make changes to products without prior notice, 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
defects or other reproductive harm.
Contents
Safety
...................................................3
Product Description
Specications
Mixing fuel
Filling the fuel tank.................................9
Starting the Engine
The operational procedures described in this manual are intended to help you get the most from this unit as well as 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
series of hand-held power equipment, or if you do not understand something in this manual, contact Shindaiwa at the
address printed on the back of this Manual.
.............................................8
...............................6
........................................7
.............................10
PAGE
PAGE
Stopping the engine.............................12
Operation
Maintenance
Troubleshooting Guide
Warranty
.............................................12
........................................13
........................19
..............................................22
IMPORTANT!
Attention Statements
Throughout this manual are special “attention statements”.
DANGER!
A statement preceded by the triangular attention symbol and
the word “DANGER” contains information that should be acted upon
to prevent serious injury or death.
WARNING!
A statement preceded by the triangular attention symbol and the
word “WARNING” contains information that should be acted upon to prevent serious bodily injury .
CAUTION!
A statement preceded by the word
“CAUTION” contains information
that should be acted upon to prevent
mechanical damage.
NOTE:
A statement preceded by the word
“NOTE” contains information that is
handy to know and may make your job
easier.
IMPORTANT!
A statement preceded by the word “IMPORTANT” is one that possesses
special signicance.
2
Safety and operation labels
HOT SURFACE
A hedge trimmer has the potential to cause
serious personal injury to the operator or
bystanders if misused, abused or mishandled.
You must observe all special safety instructions
to reduce the risk of personal injury.
Read and follow this manual, make sure anyone
using the trimmer does likewise. Failure to do
so could result in serious personal injury or
machine failure. Keep this manual for future
reference.
Always wear a hard hat to reduce the risk of
head injuries during operation of this machine.
In addition, always wear eye and hearing protection. Shindaiwa recommends wearing a face
shield as additional face and eye protection.
The blades are SHARP. Handle with care.
Keep hands clear of the cutter blades when
starting the engine.
WARNING !Surface can be hot. Always wear
gloves when handling this unit.
Safety
Work Safely
A hedge trimmer has the potential to cause serious personal injury to the operator or bystanders if misused, abused
or mishandled. To reduce the risk of injury, you must maintain control at all times, and observe all safety precautions
during operation. Never permit a person without training or instruction to operate this machine!
Stay Alert
You must be physically and mentally t to operate this unit safely.
WARNING!
Hedge Clipper blades are very sharp. Touching them may lead to severe personal injury. Avoid touching
blades whenever possible, and always wear gloves to protect hands
WARNING!
Never make unauthorized attachment installations. Always use genuine Shindaiwa parts and accesso-
ries when repairing or maintaining this unit.
WARNING!
Operation of this equipment may create sparks that can start res around dry vegetation. This unit is
equipped with a spark arrestor and a spark arrestor may be required. The operator should contact local re
agencies for laws or regulations relating to re prevention requirements.
WARNING!
Never operate power equipment of any kind if you are tired or if you are under the inuence of
alcohol, drugs, medication or any other substance that could affect your ability or judgement.
WARNING!
Moving parts can amputate ngers or cause severe injuries. Keep hands, clothing and loose objects
away from all openings.
• ALWAYS stop engine, disconnect spark plug, and make sure all moving parts have come to a complete stop
before removing obstructions, clearing debris, or servicing unit.
• DO NOT start or operate unit unless all guards and protective covers are properly assembled to unit.
• NEVER reach into any opening while the engine is running. Moving parts may not be visible through open-
ings.
WARNING!
Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a poison gas. Breathing CO can cause unconsciousness, serious injury, or death. Exhaust can cause serious burns. ALWAYS position unit so that exhaust is
directed away from your face and body.
3
HOT SURFACE
CAUTION
READ AND
FOLLOW THE
INSTRUCTIONS
IN THE
OPERATORS
MANUAL.
WEAR EYE
AND HEARING
PROTECTION
AT ALL TIMES
DURING
OPERATION.
THE BLADES
ARE SHARP!
HANDLE WITH
CARE.
KEEPS HANDS
CLEAR OF
CUTTER
BLADES WHEN
STARING THE
ENGINE.
WARNING!
Use Good Judgement
NEVER transport the unit or leave it
unattended with the engine running.
An engine that’s running could be accidently accelerated causing the blades
to move.
Make sure that the blade cover is in
place when transporting or storing the
hedge trimmer.
ALWAYS make sure that the cutter
attachment and all handles and guards
are properly installed and rmly tightened before operation.
Inspect for broken, missing or improperly installed parts or attachments.
NEVER use a cracked or warped cutter
or cutter bar: replace it with a service-
able one and make sure it ts properly.
Make sure there are no missing or
loose fasteners, and that the stop
switch and throttle controls are working
properly.
Make sure there is always good ventilation when operating the hedge trimmer.
Fumes from engine exhaust can cause
serious injury or death. NEVER run the
engine indoors!
NEVER smoke or light res near the hedge
trimmer. Keep the unit away from excessive
heat. Engine fuel is very ammable and
re could lead to serious personal injury or
property damage.
Do not operate this machine with the muf-
er removed.
NEVER attempt cutter adjustment with the
engine running!
Before starting the engine, make sure the
cutter is not contacting anything.
ALWAYS conrm safe operation when
using the machine.
Immediately stop the engine with the stop
switch if the machine suddenly begins to
vibrate or shake.
ALWAYS stop the engine immediately and
check for damage if you strike a foreign object
or if the machine becomes tangled. Do not operate with broken or damaged equipment.
When cutting a branch that is under tension, be alert for spring-back so that you will
not be struck by the moving branch.
If a cutter should bind fast in a
cut, shut off the engine immediately . Push the branch or tree to
ease the bind and free the cutter.
ALWAYS stop the engine and
allow it to cool before refuelling.
Avoid overlling and wipe off
any fuel that may have spilled.
To reduce re hazard, keep
the engine and mufer free of
debris, leaves, or excessive
grease.
KEEP A SOLID STANCE
Maintain footing and balance
at all times. Do not stand on
slippery, uneven or unstable
surfaces. Do not work in odd
positions or on ladders. Do not
over reach.
Safety devices and labels
ON-OFF Switch
Throttle
Interlock
Cover
Protector
IMPORTANT!
Caution, Danger, Warning, and Operation Information Labels: Make
sure all information labels are undamaged and readable. Immediately
replace damaged or missing information labels. New labels are available from your local authorized Shindaiwa dealer.
4
Safety (continued)
Operating the Hedge Trim-
ALWAYS protect yourself from hazards
such as thorny brush and ying debris
by wearing gloves and close tting
clothing that covers arms and legs.
Never wear shorts. Don’t wear loose
clothing or items such as jewelry that
could get caught in machinery or
underbrush. Secure long hair so it is
above shoulder level.
ALWAYS wear eye, ear,
and hand protection while
operating this unit!
ALWAYS stop the engine before
removing branches or debris from
the cutters! Never allow the cutters
to contact buildings or other hard
objects!
ALWAYS stop the engine and install
the blade cover before moving to
another work site, and maintain a rm
footing while operating or carrying the
trimmer.
NEVER cut metal objects
or wire with the blade.
NEVER allow children to use
the unit. Avoid operating near
bystanders.
ALWAYS grip support handle
with right hand and throttle
handle with left hand.
NEVER operate this unit if the
safety guard has been removed or
damaged!
AVOID using or storing this unit in a wet
environment. Water on the cutters may
enter the gearcase and damage your unit.
AVOID cutting large or extremely
“woody” branches. Doing so can shorten
cutter life, and may also damage the
gearcase.
USE EXTREME CAUTION
when operating near fences
or electric wiring.
Always maintain this unit according to this owner’s manual and follow the recommended scheduled
maintenance.
Never modify or disable any of the
unit’s safety devices.
Always use genuine Shindaiwa parts
and accessories when repairing or
maintaining this machine.
Do not make unauthorized modications to the unit.
ALWAYS keep proper footing and do
not overreach. Maintain your balance at
all times during operation.
CAUTION
Never allow the engine to run at high
RPM without a load. Doing so could
damage the engine.
When transporting the unit in a vehicle, tie it down securely to prevent fuel
spillage or damage to the machine.
Always stop the engine and allow it to
cool before refuelling. Avoid overlling
and wipe off any fuel that may have
spilled.
Never place ammable material close
to the engine mufer and never run
the engine without the spark arrestor
screen in place.
Keep the cutters sharp and properly
adjusted.
Keep the unit as clean as possible.
Keep it free of loose vegetation, mud,
etc.
5
Product Description
Cutter blades
WARNING!
Blade protector
Mufer
On/Off Switch
Support handle
Recoil
starter
Throttle
Throttle
interlock
Blade
protecter
Throttle
handle
Using the illustration as a
guide, familiarize yourself
with this unit and its various
components. Understanding
your machine helps ensure
top performance, longer service life, and safer operation.
Support
Guard
handle
Do not alter this machine or any
of its components!
Fuel tank
Air lter cover
This unit comes completely assembled. Before using this product, please make sure you have all the components
required for a complete unit. Carefully inspect all components for damage.
• This user manual
• T-wrench
• Blade protecter
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.
6
Specications
Model HT231-30 HT231-40
Engine Type 2-cycle, horizontal cylinder, air cooled
Engine Bore x Stroke 32 mm x 28 mm (1.26 in x 1.10 in.)
Engine Displacement 22.5cc (1.37 in3)
Unit Weight, Less Fuel 5.9 kg (13.0 lb) 6.4 kg (14.1 lb)
Unit Dimensions (LxWxH) 990 x 210 x 210 mm (38.98 x 8.17x8.27 in) 1330 x 210 x 210 mm (53.26 x 8.27 x 8.27
Fuel Tank Capacity 0.6 liter/20.3 oz.
Fuel/oil ratio 50:1 with *ISO-L-EGD or JASO FD class 2-cycle Mixing Oil
Carburetor Diaphragm type
Ignition Fully electronic, transistor controlled
Spark Plug NGK BPMR6A
Electrode Gap .65 mm (.026 in)
Torque 150-170 kgf • cm / 130-150 in • lbf
Air Cleaner Foam element
Mufer Type Spark arrestor mufer or spark arrestor mufer with catalyst
Starting Method Recoil type
Stopping Method Slide switch,grounding type
Blade Length 740 mm (29.13 in) 1080 mm (42.52 in)
Blade Type Double-blade cutting action: single-edged blade
Clutch Type Centrifugal clutch, dry-type
Gear Type Spur gears
Gear Lubrication Lithium-based grease
Standard Equipment
Idle Speed (RPM)
Clutch Engagement Speed (RPM)
Wide Open Throttle (RPM)
Specications are subject to change without
notice.
Rear handle w/integral controls, anti-vibe mountings, front handle w/guard, tool set, blade scabbard.
2,750 - 3,000
4,000
11,000 - 13,000
Emission Control (exhaust & evaporative)
EPA 2010 and Later and/or C.A.R.B. TIER III
The emission control system for the engine is EM/TWC (Engine Modication and 3-way Catalyst) and for the fuel tank
the Control System is EVAP (Evaporative Emissions) or N (for nylon tank). Evaporative emission may be applicable to
California models only.
Emission Control Label (located on Engine) (EXAMPLE ONLY, information on label varies by FAMILY).
PRODUCT EMISSION DURABILITY (EMISSION COMPLIANCE PERIOD)
The 300 hour emission compliance period is the time span selected by the manufacturer certifying the engine
emissions output meets applicable emissions regulations, provided that approved maintenance procedures are
followed as listed in the Maintenance Section of this manual.
7
Mixing Fuel
WARNING!
Alternative fuels, such as E15 (15% ethanol), E-85 (85% ethanol) or any fuels not meeting Shindaiwa
requirements are NOT approved for use in Shindaiwa gasoline engines. Use of alternative fuels may cause
performance problems, loss of power, overheating, fuel vapor lock, and unintended machine operation, including,
but not limited to, improper clutch engagement. Alternative fuels may also cause premature deterioration of fuel
lines, gaskets, carburetors and other engine components.
Fuel Requirements
Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be good quality. Gasoline may contain
up to 10% Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing methanol (wood
alcohol) is NOT approved.
2 Stroke Mixture Oil - A 2-stroke engine oil meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345/FD standards
must be used. Shindaiwa One
formulated for use in all Shindaiwa 2-stroke engines. Engine problems due to inadequate lubrication caused by fail-
ure to use an ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345/FD certied oil will void the engine warranty.
For increased engine protection, Shindaiwa recommends using Shindaiwa Red ArmorTM engine oil to protect the
engine from harmful carbon build up, maintain engine performance, and increase engine life. Shindaiwa Red ArmorTM
engine oil exceeds ISO-L-EGD and J.A.S.O. M345/FD performance requirements.
Shindaiwa OneTM 2-Stroke oil or Red ArmorTM engine oil may be mixed at 50:1
ratio for application in all Shindaiwa engines sold in the past, regardless of ratio
specied in those manuals.
Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30)
days, ninety (90) days when a fuel stabilizer is added. Use of unmixed, improperly mixed, or stale fuel, may cause hard starting, poor performance, or severe
engine damage and void the product warranty. Read and follow instructions in
the Long Term Storage section of this manual.
TM
2-Stroke Oil is strongly recommended as it meets this standard and is specically
IMPORTANT!
IMPORTANT!
Examples of 50:1 mixing quantities
Handling Fuel
DANGER
Fuel is VERY ammable. Use extreme care when mixing, storing or handling or serious personal injury may result.
• Use an approved fuel container.
• DO NOT smoke near fuel.
• DO NOT allow ames or sparks near fuel.
• Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize.
• NEVER refuel a unit when the engine is HOT or RUNNING!
• DO NOT ll fuel tanks indoors. ALWAYS ll fuel tanks outdoors over bare ground.
• DO NOT overll fuel tank. Wipe up spills immediately.
• Securely tighten fuel tank cap and close fuel container after refueling.
• Inspect for fuel leakage. If fuel leakage is found, do not start or operate unit until leakage is repaired.
• Move at least 3m (10 ft.) from refueling location before starting the engine.
8
Mixing Instructions
1. Fill an approved fuel container with half of the required amount of gasoline.
2. Add the proper amount of engine oil to gasoline.
3. Close container and shake to mix oil with gasoline.
4. Add remaining gasoline, close fuel container, and
remix.
IMPORTANT!
Spilled fuel is a leading cause of hydrocarbon emissions.
Some states may require the use of automatic fuel shutoff containers to reduce fuel spillage.
After use
• DO NOT store a unit with fuel in its tank. Leaks can
occur. Return unused fuel to an approved fuel storage
container.
Filling the fuel tank
Place the unit on a at, level surface.1.
Clear any dirt or other debris from around the fuel ller cap.2.
Remove the fuel cap, and ll the tank with clean, fresh fuel.3.
Storage - Fuel storage laws vary by locality. Contact
your local government for the laws affecting your area.
As a precaution, store fuel in an approved, airtight container. Store in a well-ventilated, unoccupied building,
away from sparks and ames.
IMPORTANT!
Stored fuel may separate. ALWAYS shake fuel container
thoroughly before each use.
CAUTION!
Slowly remove the fuel cap only after stopping the
engine
Reinstall the fuel ller cap and tighten rmly.4.
Wipe away any spilled fuel before starting engine.5.
9
Starting the Engine
IMPORTANT!
Engine ignition is controlled by a two position switch mounted on the throttle housing labeled, “I” for ON or ST AR T and
“O” for OFF or STOP.
WARNING!
The cutting attachment will operate immediately when the engine starts and could result in loss of control and possible serious injury. Keep movable parts of the cutting attachment away from objects that could
become entangled or thrown.
WARNING!
Never start the engine from the operating position.
The cutting attachment will move when the engine accelerates!
NOTE:
The blade cover is used for transportation and storage. Remove blade
cover before using the unit.
Slide the ignition switch to the “ON” position.1.
Set the throttle lever to the “fast idle”:2.
Depress and hold the throttle lock, then squeeze the throttle lever a.
toward the handgrip on the shaft tube.
Depress and hold the fast idle button.b.
While depressing the fast idle button, release the throttle trigger.c.
Press the primer bulb until fuel can be seen owing in the transparent 3.
return tube.
Set the choke lever to the CLOSED position if engine is cold.4.
Place the unit on the ground. Grip the engine cover with your left hand and 5.
the starter handle with your right hand (shown).
Throttle
interlock
Throttle
trigger
Slide the ignition switch to the ON postion
Choke closed
START
On/Off Switch
Fast Idle
button
IMPORTANT!
The primer system only pushes fuel through the carburetor. Repeatedly
pressing the primer bulb will not ood the engine with fuel.
10
Set the choke lever to the CLOSED position if
engine is cold
Pull the starter handle slowly toward you until you feel the starter mecha-6.
nism engage.
Start the trimmer by pulling the starting handle rapidly outward.7.
CAUTION!
The recoil starter can be easily damaged by abuse! Never pull the starter
cord to its full length.
IMPORTANT!
If the engine fails to start after several attempts with the choke in the
closed position, the engine may be ooded with fuel. Refer to the
“Starting a Flooded Engine” section of this manual.
Primer bulb
Primer bulb
Return Tube
Return Tube
Press the primer bulb
Press the primer bulb
Hold the unit
rmly...
.Pull recoil
starter handle
upward
Make sure the cutters are
clear of obstructions!
When the motor starts...
1. Open the choke by moving the choke lever backward (toward the
fuel tank).
2. If the engine does not continue to run, repeat the appropriate
cranking procedures for a cold or warm engine.When the engine
starts, clear excess fuel from the combustion chamber by accelerating the engine several times with the throttle lever.
3. Operating the throttle will automatically disengage the fast idle
setting.
Started a ooded engine
WARNING!
Burn danger from hot engine! Allow engine to cool before
removing cylinder cover.
Starting A Flooded Engine
Slide the ignition switch to the “I” (ON) position1. .
2.
Open the choke, put the throttle lever in the full throttle position,
then clear excess fuel from the combustion chamber by cranking the
engine several times.
3.
If the engine still fails to start or re, refer to the troubleshooting ow
chart at the end of this manual.
Start the trimmer by pulling the starting
handle rapidly outward
If the engine does not start
Repeat the appropriate starting procedure ■
for a cold or warm engine.
■
If the engine still fails to start, use the pro-
cedures for “Starting a ooded engine.”
11
Stopping the engine
Cool the engine by allowing it to idle for 2–3 minutes.1.
Move the ignition switch to the “O” or STOP position.2.
Ignition OFF (O)
Throttle free play adjustment
If the unit does not return to idle speed or doesen’t reach full rpm, the throttle lever free play may need to be adjusted as
follows:
Measure free play at the end of the 1. throttle lever. Throttle lever free play should be approximately 5-7 mm (0.2-0.275”).
If adjustment is necessary , remove the air cleaner cover by loosening the two thumbscrews. Loosen the cable adjuster lock nut 2.
and turn the cable adjustment tting in or out until throttle lever free play is approximately 5-7 mm (0.2-0.275”).
Replace the air cleaner cover, and tighten the cover retaining screws securely.3.
5-7 mm (0.2-
0.275”)
Cable adjustor
Throttle lever free play
Operation
Always grip support handle with right hand and throttle handle with left hand. ■
Squeezing the throttle increases engine speed, causing the clutch to engage and ■
operate the cutters.
■
Releasing the throttle decreases engine speed, causing the cutters to slow, and
then stop altogether as the clutch disengages.
■
Use a sweeping motion when cutting, and vary throttle settings often.
Avoid cutting material larger than 1.27 cm in diameter. ■
Throttle cable
Locknut
12
Maintenance
COMPONENT/SYSTEM
MAINTENANCE
PROCEDURE
DAILY OR
BEFORE
USE
EVERY
REFUEL
3 MONTHS
OR 90
HOURS
YEARLY 600
HOURS
Air Filter Inspect/Clean
I / C * R *
Choke Shutter Inspect/Clean
I / C
Fuel Filter Inspect/Replace
I * I / R *
Fuel Cap Gasket Inspect/Replace
I * R *
Fuel System Inspect/Replace
I (3) * I (3) *
Spark Plug Inspect/Clean/Replace
I / C / R *
Cooling System Inspect/Clean
I / C
Muffler Spark Arrestor Inspect/Clean/Replace
I / C / R *
Cylinder Exhaust Port Inspect/Clean/Decarbon
I / C
Gear Housing Grease
I (1)
Blades Inspect/Clean
I / C (2)
Recoil Starter Rope Inspect/Clean
I / C *
Screws/Nuts/Bolts Inspect/Tighten/Replace
I *
* All recommendations to replace are based on the finding of damage or wear during inspection.
(2) Inspect blade and clean as needed. Lubricate blades periodically during use.
(3) Low evaporative fuel tanks DO NOT require regular maintenance to maintain emission integrity.
MAINTENANCE PROCEDURE LETTER CODES:
I = INSPECT, R = REPLACE, C = CLEAN
IMPORTANT NOTE
- Time intervals shown are maximum. Actual use and your experience will
determine the frequency of required maintenance.
MAINTENANCE PROCEDURE NOTES:
(1) Apply Grease every 20 hours of use.
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 Echo, Inc. 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.
Before performing any maintenance,
repair or cleaning work on the unit, make
sure the engine is completely stopped.
Disconnect the spark plug wire before
performing service or maintenance work.
Maintenance Intervals
WARNING!
WARNING!
Non-standard parts may not operate
properly with your unit and may cause
damage and lead to personal injury.
NOTE:
Using non-standard replacement parts
could invalidate your Shindaiwa warranty.
WARNING!
Always wear gloves
when working around the cutter
assembly.
13
Air Filter
Remove the air lter element, and wash the element in clean, neutral sol-1.
vent or warm soapy water. Rinse the element thoroughly, and then squeeze
dry before reassembly.
CAUTION!
Never operate the unit if the air lter assembly is damaged or missing or if the
air lter element is soaked with water!
Fuel Filter
Use a wire hook to extract the fuel lter from inside the fuel tank. Inspect ■
the fuel lter element. If it shows signs of contamination from debris,
replace it with a genuine Shindaiwa replacement fuel lter element.
Before reinstalling the lter, inspect the fuel line. If you discover damage
or deterioration, the unit should be removed from service unitl it can be
inspected by a Swisher-trained service technician.
Air lter cover
Air lter element
Hooked
wire
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.
Spark Plug
Keep the spark plug and wire connections tight and clean.
Adjust the spark plug electrode gap to .026 inch (.65 mm). If the spark plug
must be replaced, use only the spark plug recommended on the Specications section or an equivalent resistor type spark plug of the correct heat
range.
CAUTION!
Before removing the spark plug, clean the area around the plug to prevent
dirt and debris from getting into the engine’s internal parts.
Fuel lter
0.65 mm
(0.026 in.)
Remove the spark plug and adjust the
gap at the electrode
14
Exhaust System
WARNING!
This unit must never be operated with a faulty or missing spark arrester or mufer. Make sure the mufer is well
secured and in good condition. A worn or damaged mufer is a re hazard and may also cause hearing loss.
If the engine becomes sluggish and low on power, check and clean the spark arrester screen.
1.
Loosen the knob of the spark plug cover and remove the cover.
Remove the spark plug lead from the spark plug.2.
Loosen the four 5 mm bolts located at the top of the recoil starter housing and remove the cover.3.
Loosen the 5 mm bolt located at the top of the cylinder cover and two 4 mm bolts located at the bottom of the cylinder 4.
cover and remove cover.
Loosen three 5 mm mufer cover bolts and remove the mufer cover.5.
Remove mufer gasket bolt.6.
Loosen two 4 mm screws from the mufer cover.7.
Remove two 4 mm screws from the top tail plate and remove tail plate.8.
Remove the spark arrester screen and clean with a stiff bristle brush.9.
Remove the mufer from the engine and inspect the cylinder exhaust port for carbon buildup.10.
Reassemble the mufer in the reverse order of disassembly11.
IMPORTANT!
If you note excessive carbon buildup, consult your servicing dealer.
Cooling System
■
Remove any compacted debris from
around the fuel tank and/or mufer.
■
Inspect cooling system. Check cooling
air intake area at base of crankcase.
Remove all debris. Dirt build-up in these
areas can lead to engine overheating,
re, or premature wear.
Remove and clean the cylinder cover and ■
clean grass and dirt from the cylinder ns.
Lower tail plate
Mufer
Gasket
plate
Keep cooling
ns clean
Inspect cooling system
gasket
Mufer plate screws
Spark arrester screen
Plate
Mufer gasket bolt
Mufer
Top tail plate
Keep cooling air
intake passages
clean (Fuel tank
Mufer cover
screws
Mufer
cover bolts
Mufer
cover
removed for
clarity)
15
Carburetor Adjustment
Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor adjustments can be
made. During the break-in period your engine performance will increase and exhaust emissions will stabilize. Idle speed can
be adjusted as required.
High Altitude Operation
This engine has been factory adjusted to maintain satisfactory starting, emission, and durability performance up to
1,100 feet above sea level (ASL) (96.0 kPa). To maintain proper engine operation and emission compliance above
1,100 feet ASL the carburetor may need to be adjusted by an authorized ECHO service dealer.
IMPORTANT!
If the engine is adjusted for operation above 1,100 feet ASL, the carburetor
must be re-adjusted when operating the engine below 1,100 feet ASL, otherwise severe engine damage may result.
NOTE:
Every unit is run at the factory and the carburetor is set in compliance with
emission regulations. Carburetor adjustments, other than idle speed, must be
performed by an authorized Shindaiwa dealer.
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.
WARNING!
The cutters must NEVER engage at engine idle speeds! If the idle
speed cannot be adjusted by the procedure, described here, contact your
authorized Shindaiwa servicing dealer.
Idle Speed Adjustment
Place the trimmer on the ground, then start the engine, and then allow it to 1.
idle 2-3 minutes until warm.
If the attachment rotates when the engine is at idle, reduce the idle speed 2.
by turning the idle adjustment screw counter-clockwise.
If a tachometer is available, the engine idle speed should be nal adjusted 3.
to the values in the Specication section.
NOTE:
Carburetor fuel mixture adjustments are preset at factory and cannot be ser-
viced in the eld.
Idle adjustment
screw
16
Gearcase lubrication
CAUTION!
■
Over-lubricating may cause the gearcase to run slower than normal, and may also cause leakage from excess grease.
Do not remove the conrods from the cutters. Conrod bearings can be lost or damaged if disturbed. ■
Top off gearcase grease level by using a lever-type grease gun to force 1–2 strokes of high quality lithium-based grease
through the gearcase grease tting.
Every 60 hours
(or before long-term storage)
Remove the gearcase cover, and
use solvent and a soft brush to
remove all old grease from the
gearcase. To rell, hand-pack
the gearcase with approximately
40–50 grams of high quality
lithium-based grease (50–70% of
capacity). DO NOT OVERFILL!
BOTTOM
VIEW
Grease tting
Gearcase cover
BOTTOM VIEW
DO NOTE REMOVE
CONRODS
Hex screws
Gearcase lubrication
Cutter blade adjustment
WARNING!
The cutter blades are very sharp! Always wear gloves when
working around the cutter assembly.
Cutting performance of your machine depends a great deal on proper cutter
blade adjustment. Properly adjusted blades will oscillate freely yet help prevent binding of cut material between blades. Adjust blades as follows:
1.
Loosen all blade locknuts at least one full turn.
Tighten each blade shoulder bolt rmly, and then loosen the shoulder bolts 2.
1/4 to 1/2 turn.
CAUTION!
Operating the trimmer with worn or improperly adjusted cutters will reduce
cutter performance and may also damage your machine. Never operate the
machine with damaged or worn cutters.
Working from the gearcase end, lock each bolt in place by rmly tightening 3.
its locknut while preventing the shoulder bolt from turning.
When shoulder bolt adjustment is correct, there should be a gap of 0.25–
0.50 mm between the cutter blades and the at washers, and the at washer
beneath each bolt head should turn freely.
Guide Bar
Cutter
Blades
Adjusting cutter blades
Shoulder Bolt
Locknut
Washer
(should turn
freely)
17
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