Shindaiwa HT230 Owner's manual

SHINDAIWA OWNER'S/
OPERATOR'S MANUAL
HT230 HEDGE
TRIMMER
WARNING!
姞
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.
Part Number 80837 Rev. 4/04
Shindaiwa Inc.
11975 S.W. Herman Rd.
Tualatin, Oregon 97062
Telephone: [phone]
Fax: [phone]
www.shindaiwa.com
Shindaiwa Kogyo Co., Ltd.
Head Office: 6-2-11 Ozuka
Nishi, Asaminami-ku
Hiroshima, 731-3167, Japan
Telephone: [phone]
Fax: [phone]
䊚2004 Shindaiwa, Inc.
Part Number 80837
Revision 4/04
Shindaiwa is a registered trademark
of Shindaiwa, Inc.
Specifications subject to change without notice.
姞

2
Introduction
PAGE
The Shindaiwa HT230 series of hand
power tools has been designed and
built to deliver superior performance
and reliability without compromise to
quality, comfort, or durability.
Shindaiwa high performance
engines represent the leading edge of
2-cycle engine technology, delivering
exceptionally high power at remark-
able 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 differ-
ences between your HT230 series
unit and what is described here.
Shindaiwa Inc. reserves the right to
make changes to products without
prior notification, and without obliga-
tion to make alterations to machines
previously manufactured.
WARNING!
The engine exhaust from this unit
contains chemicals known to the
State of California to cause
cancer, birth defects or other
reproductive harm.
Contents
Attention Statements........................... 3
General Safety Instuctions ................. 4
Safety Equipment and Labels ............ 6
Unit Description .................................. 7
Specifications ....................................... 8
Mixing Fuel .......................................... 9
Filling the Fuel Tank .......................... 9
Starting Procedure ............................ 10
Starting a Flooded Engine................ 12
Idle Speed Adjustment...................... 13
Stopping the Engine.......................... 13
Maintenance and Adjustments ........ 14
Long Term Storage ........................... 17
Troubleshooting Guide .................... 18
Emission System
Warranty Statement ..................... 22
23
MAINTENANCE AND REPAIR REQUIREMENTS
You are responsible for the proper use and maintenance of the engine. You should keep all
receipts and maintenance records covering the performance of regular maintenance in the
event questions arise. These receipts and maintenance records should be transferred to each
subsequent owner of the engine. Shindaiwa Kogyo Co., Ltd. reserves the right to deny
warranty coverage if the owner has not properly maintained the engine. Shindaiwa Kogyo
Co., Ltd. will not deny warranty repairs, however, solely because of the lack of repair,
maintenance or failure to keep maintenance records.
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 SHINDAIWA KOGYO CO., LTD. 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.
If other than the parts authorized by Shindaiwa Kogyo Co., Ltd. are used for maintenance
replacements or for the repair of components affecting emission control, you should assure
yourself that such parts are warranted by their manufacturer to be equivalent to the parts
authorized by Shindaiwa Kogyo Co., Ltd. in their performance and durability.
OBTAINING WARRANTY SERVICE
All repairs qualifying under this limited warranty must be performed by a dealer authorized
by Shindaiwa Kogyo Co., Ltd.
If any emission-related part is found defective during the warranty period, it is your
responsibility to present the product to an authorized Shindaiwa dealer. Bring your sales
receipts showing the date of purchase for this engine. The dealer authorized by Shindaiwa
Kogyo Co., Ltd. will perform the necessary repairs or adjustments within a reasonable
amount of time and furnish you with a copy of the repair order. All parts and accessories
replaced under this warranty become the property of Shindaiwa Kogyo Co., Ltd.
To locate an authorized Shindaiwa dealer near you, contact your Shindaiwa Distributor. For
the name and telephone number of the Shindaiwa Distributor in your area, please call
Shindaiwa Inc. at [phone] between the hours of 8:00 AM and 5:00 PM Pacific Standard
Time.
THIS WARRANTY IS ADMINISTERED BY
Shindaiwa Inc.
11975 S.W. Herman Rd.
Tualatin OR. 97062
[phone]

3
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 infor-
mation that should be acted upon
to avoid damaging the unit.
IMPORTANT!
A statement preceded by the word
IMPORTANT is one that possesses
special significance.
IMPORTANT!
The operational procedures de-
scribed 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 guide-
lines 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 HT230, or if you do not under-
stand something in this manual, your
Shindaiwa dealer will be glad to
assist you.
You may also contact Shindaiwa,
Inc., at the address printed on the
back of this manual.
Attention Statements
Read and follow this Operator’s
Manual. Failure to do so could
result in serious injury.
Wear eye and hearing
protection at all times during
the operation of this unit.
The blades are SHARP!
Handle with care.
Keep hands clear of the
cutter blades when starting
the engine.
Do not operate this unit if
you are tired, ill or under the
influence of alcohol, drugs,
or medicine.
22
Shindaiwa Kogyo Co., Ltd.
Federal Emission Design And Defect Limited Warranty
Utility And Lawn And Garden Engines
Shindaiwa Kogyo Co., Ltd. warrants to the initial purchaser and each subsequent owner,
that this utility equipment engine (herein engine) is designed, built and equipped to conform
at the time of initial sale, to all applicable regulations of the U.S. Environmental Protection
Agency (EPA), and that the engine is free of defects in materials and workmanship that would
cause this engine to fail to conform with EPA regulations during its warranty period. This
emission warranty is applicable in all States, except the State of California.
For parts listed under PARTS COVERED, the dealer authorized by Shindaiwa Kogyo Co.,
Ltd. will, at no cost to you, make the necessary diagnosis, repair, or replacement of any
defective emission-related component to ensure that the engine complies with applicable U.S.
EPA regulations.
MANUFACTURERS WARRANTY COVERAGE
When sold within the U.S., this engine’s emission control system is warranted for a period
of two (2) years from the date this product is first delivered to the original retail purchaser.
OWNER’S WARRANTY RESPONSIBILITIES
As the engine owner, you are responsible for the performance of the required maintenance
listed in your owner’s manual. Shindaiwa Kogyo Co., Ltd. recommends that you retain all
receipts covering maintenance on your engine, but Shindaiwa Kogyo Co., Ltd. cannot deny a
warranty claim solely for the lack of receipts or for your failure to ensure the performance of
all scheduled maintenance.
As the engine owner, you should however be aware that Shindaiwa Kogyo Co., Ltd. may
deny your warranty coverage if your engine or a part has failed due to abuse, neglect,
improper maintenance or unapproved modifications.
You are responsible for presenting your engine to the nearest dealer authorized by
Shindaiwa Kogyo Co., Ltd. when a problem exists.
If your Shindaiwa Dealer is unable to answer questions regarding your warranty rights and
responsibilities, you should then contact your Shindaiwa Distributor.
For the name and telephone number of the Shindaiwa Distributor in your area, please call
Shindaiwa Inc. at [phone] between the hours of 8:00 AM and 5:00 PM Pacific Standard
Time.
PARTS COVERED
Listed below are the parts covered by the Federal Emission Design and Defect Warranty.
Some parts listed below may require scheduled maintenance and are warranted up to the first
scheduled replacement of that part. The warranted parts include:
1. Carburetor Internal Components
• Valve Assembly-throttle, Jet, Metering Diaphram
2. Ignition System Components
• Ignition Coil
• Flywheel Rotor
The emission control system for your particular Shindaiwa engine may also include certain
related hoses and connectors.
LIMITATIONS
The Federal Emission Design and Defect Warranty shall not cover any of the following:
(a) conditions resulting from tampering, misuse, improper adjustment (unless they
were made by the dealer or service center authorized by Shindaiwa Kogyo Co., Ltd. during a
warranty repair), alteration, accident, failure to use the recommended fuel and oil, or not
performing required maintenance services,
(b) the replacement parts used for required maintenance services,
(c) consequential parts used for required maintenance services,
(d) diagnosis and inspection fees that do not result in eligible warranty service being
performed, and
(e) any non-authorized replacement part, or malfunction of authorized parts due to use
of non-authorized parts.
The following statement only applies to United States and its territories

4
SAFETY
Work Safely
Hedge trimmers operate 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
NEVER run the engine when
transporting 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 use the proper cutting
tool for the job.
ALWAYS stop the unit immedi-
ately if it suddenly begins to vibrate
or shake. Inspect for broken,
missing or improperly installed
parts or attachments.
ALWAYS keep the unit as clean as
practical. Keep it free of loose
vegetation, mud, etc.
ALWAYS hold the unit firmly 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
maintenance work.
ALWAYS, if the cutter should
bind fast in a cut, shut off the
engine immediately. Push the
branch to ease the bind and free
the cutter.
Stay Alert
You must be physically and mentally
fit to operate this unit safely.
General Safety Instructions
WARNING!
Never make unauthorized attach-
ment installations.
WARNING!
Never operate power equipment of
any kind if you are tired or if you
are under the influence 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 fires near
the unit.
ALWAYS stop the engine and
allow it to cool before refueling.
Avoid overfilling and wipe off any
fuel that may have spilled.
ALWAYS inspect the unit for fuel
leaks before each use. During each
refill, 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 repaired before
using the unit.
ALWAYS move the unit to a place
well away from a fuel storage area
or other readily flammable materi-
als before starting the engine.
NEVER place flammable material
close to the engine muffler.
NEVER run the engine without the
spark arrester screen in place.
21
TROUBLESHOOTING
Troubleshooting Guide (continued)
ADDITIONAL PROBLEMS (cont.)
Cutters move
at engine idle.
Engine idle too high.
Broken clutch spring or
worn clutch spring boss.
Set idle: 3,000 (±250) rpm (min
-1
)
Replace spring/shoes as
required, check idle speed.
Excessive
vibration
Warped or damaged
guide bar or cutters
Damaged gearcase or
cam case.
Shoulder bolts/cutters
worn or out of adjustment.
Inspect and replace
as required.
Consult with an authorized
servicing dealer.
Adjust or replace as required.
See page 16 for adjustment
procedure.

5
HT2326
General Safety Instructions
WORK SAFELY!
SAFETY
Avoid using or storing this unit
in a wet environment. Water on
the cutters may enter the
gearcase and damage your
machine.
Always wear eye, ear,
and hand protection
while operating this
unit!
Always wear close-fitting clothing. Gloves offer added protection
and are strongly recommended. Do not wear clothing or jewelry
that could get caught in machinery. Secure long hair so that it is
above shoulder level.
Always keep proper footing and do not overreach.
Maintain your balance at all times during operation.
Use extreme caution when
operating near fences or electric
wiring.
Never cut metal objects or
wire with the blade.
Never operate this unit if
the safety guard is
damaged!
Never allow children to use the
unit. Avoid operating near
bystanders.
Always stop the engine
and install the blade cover
before moving to another
work site, and maintain a
firm footing while
operating or carrying the
hedge trimmer.
Always stop the engine before
removing branches or debris from
the cutters! Never allow the cutters
to contact buildings or other hard
objects!
Never operate this
unit at full throttle no-
load rpm!
Avoid cutting large or
extremely “woody”
branches. Doing so can
shorten cutter life, and
may also damage the
gearcase.
Always operate with
both hands firmly
gripping the unit.
20
TROUBLESHOOTING
Troubleshooting Guide (continued)
ADDITIONAL PROBLEMS
Poor
acceleration.
Clogged air filter.
Clogged fuel filter.
Carburetor mixture
too lean.
Idle speed set too low.
Clean or replace the air filter.
Replace the fuel filter.
Consult with an authorized
servicing dealer.
Adjust: 3,000 (±250) rpm (min
-1
).
Symptom Possible Cause Remedy
Engine stops
abruptly.
Switch turned off.
Fuel tank empty.
Water in the fuel.
Clogged fuel filter.
Shorted spark plug or
loose terminal.
Ignition failure.
Piston seizure.
Reset the switch and re-start.
Refill with clean fresh unleaded
gasoline with a pump octane of
87 or higher, mixed with
Shindaiwa Premium 2-cycle
mixing oil at a 50:1 gasoline/
oil ratio.
Drain; replace with fresh fuel
mixture. See above.
Replace fuel filter.
Clean or replace the plug with
a Champion CJ8 or equivalent
type spark plug of the correct
heat range. For EMC compliance,
use NGK BMR6A Re-start.
Replace the ignition unit.
Consult with an authorized
servicing dealer.
Engine difficult
to shut off.
Ground (stop) wire is
disconnected, or switch
is defective.
Overheating due to
incorrect spark plug.
Overheated engine.
Test and replace
as required.
Replace the plug with
a Champion CJ8 or equivalent
type spark plug of the correct
heat range. For EMC compliance,
use NGK BMR6A Re-start.
Idle engine until cool.

6
HT2301
Safety Equipment and Labels
ON-OFF
Switch Throttle
Lockout
Cover
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.
WARNING
Use caution to
avoid misassembly
Assemble as
per illustration
SAFETY
Caution Label
p/n 19402-00110 Caution Label p/n 19402-00144
19
Troubleshooting Guide (continued)
LOW POWER OUTPUT
Is the engine
overheating?
Operator is overworking
the unit.
Carburetor mixture is
too lean.
Improper fuel/oil ratio.
Fan, fan cover, cylinder
fins dirty or damaged.
Carbon deposits on the
piston or in the muffler.
Cut at a slower rate.
Consult with an authorized
servicing dealer.
Refill with clean fresh unleaded
gasoline with a pump octane of
87 or higher, mixed with
Shindaiwa Premium 2-cycle
mixing oil at a 50:1 gasoline/
oil ratio.
Clean, repair, or replace
as necessary.
Consult with an authorized
servicing dealer.
What To Check Possible Cause Remedy
Engine is rough
at all speeds.
May also have
black smoke
and/or unburned
fuel at the
exhaust.
Clogged air filter.
Loose or damaged
spark plug.
Air leakage or clogged
fuel line.
Water in the fuel.
Piston seizure.
Faulty carburetor and/or
diaphragm.
Clean or replace the filter.
Tighten or replace the plug with
a Champion CJ8 or equivalent
type spark plug of the correct
heat range. For EMC compliance,
use NGK BMR6A Re-start.
Repair or replace
filter and/or fuel line.
Refill with fresh fuel mixture.
See page 9.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
Engine is
knocking.
Overheating condition.
Improper fuel.
Carbon deposits in the
combustion chamber.
See above.
Check fuel octane rating;
check for presence of alcohol
in the fuel. Refuel as necessary.
See page 9.
Consult with an authorized
servicing dealer.
TROUBLESHOOTING

7
HT2301
HT2302
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 unit.
Unit Description
Air Cleaner
Cover
Fuel Tank
Protector
Gearcase
Throttle
Trigger
Front Handle
Choke
Rear
Handle
ON-OFF Switch
WARNING!
Do not make unauthorized
modifications or alterations to
this unit or to any of its compo-
nents or accessories.
Guide Bar
Cutter
Cover
Fuel
Cap
Recoil
Starter
DESCRIPTION
Prior To Using
Assembly and Adjustments
Using the accompanying illustrations as a
guide, familiarize yourself with your unit and its
various components. Understanding your unit
helps ensure top performance, long service
life, and safer operation.
This unit comes fully assembled.
Before using this product, please
make sure you have all the compo-
nents required for a complete unit:
■Engine assembly and gearcase/
cutter assembly
■Combination spark plug/13mm
wrench
18
TROUBLESHOOTING
Troubleshooting Guide
ENGINE DOES NOT START
6
ª
7g
Does the engine
crank?
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
Consult with an authorized
servicing dealer.
NO
Good
compression?
Loose spark plug.
Excess wear on
cylinder, piston, rings.
Tighten and re-test.
Consult with an authorized
servicing dealer.
NO
YES
Does the tank
contain fresh
fuel of the
proper grade?
Fuel may be
contaminated or stale.
Refill with clean fresh unleaded
gasoline with a pump octane of
87 or higher, mixed with Shindaiwa
Premium 2-cycle mixing oil at a 50:1
gasoline/oil ratio.
NO
YES
Is fuel visible
and moving in
the return line
when priming?
Check for clogged fuel
filter and/or vent.
Replace fuel filter or vent as required.
Restart.
NO
Is there spark at
the spark plug
wire terminal?
The ignition switch
is OFF (“O”).
Faulty ignition ground.
Faulty ignition unit.
Move switch to ON (“I”)
and re-start
Consult with an authorized
servicing dealer.
NO
YES
YES
Check the
spark plug.
If the plug is wet, excess
fuel may be in the
cylinder.
The plug may be fouled
or improperly gapped.
The plug may be
damaged internally or
is the wrong size.
Crank the engine with the
plug removed, and the ignition
switch off. Replace the
plug, and re-start.
Clean and re-gap the plug to
0.024 inch (0.6 mm). Re-start.
Replace the plug with a
Champion CJ8 or equivalent
type spark plug of the correct
heat range. For EMC compliance,
use NGK BMR6A Re-start.
YES
What To Check Possible Cause Remedy

8
Specifications
Model ......................................................................................... HT230-30/HT230-40
Engine Model ................................................................................................. SHT230
Engine Type ................................................ 2-cycle, horizontal cylinder, air cooled
Engine Bore x Stroke ........................................................................ 32mm x 28mm
Engine Displacement ........................................................................................ 22.5cc
Engine Weight, (dry) .......................................................................... 2.6kg (5.73 lb)
Max. Power .................................................................................. 1.1 hp @ 8000 rpm
Fuel/Oil Ratio ............................ 50:1 with Shindaiwa Premium 2-cycle mixing oil
Fuel Tank Capacity ............................................................................ 0.7 liter/24 oz.
Carburetor .................................................................. Walbro WYJ,Diaphragm type
Ignition .......................................................... Fully electronic,transistor controlled
Spark Plug ........................................................................................... Champion CJ8
................................ For Electromagnetic Compliance (EMC), use NGK BMR6A
Air Cleaner .......................................................................................... Foam Element
Starting Method ........................................................................................Recoil type
Stopping Method ........................................................ Slide switch, grounding type
Unit Dimensions (LxWxH)
HT230-30: ................................................................................... 990 x 210 x 210mm
HT230-40: ................................................................................. 1330 x 210 x 210mm
Engine and Cutter Weight, Less Fuel
HT230-30: ...........................................................................................5.5kg (12.23 lb)
HT230-40: ...........................................................................................6.0kg (13.23 lb)
Blade Length
HT30-30: ........................................................................................................... 740mm
HT230-40: ....................................................................................................... 1080mm
Blade Type ................................. Double-blade cutting action: single-edged blade
Clutch ................................................ Fully automatic centrifugal clutch, dry-type
Gear Type ................................................................................................... Spur gears
Gear Lubrication........................................................ High Quality Lithium Grease
Standard Equipment
Rear handle with integral controls, anti-vibe mountings. Front handle with
guard. Blade scabbard(cover).
Options .............................................................................................. Deflector shield
Specifications subject to change without notice.
DESCRIPTION
17
HT2324
(or whenever hard starting or
poor performance are noted):
Remove the spark arrester screen, and
use a wire brush to gently remove
excess carbon deposits.
Muffler
Arrester Screen
Arrester
Screw
■A damaged or otherwise unservice-
able screen must be replaced.
■If carbon accumulations in the
muffler or cylinder are severe,
return the trimmer to your dealer
for inspection.
WARNING!
Never operate this unit with a
damaged or missing muffler or
spark arrester! Operating with
missing or damaged exhaust
components is a fire hazard, and
may also damage your hearing.
Long Term Storage
MAINTENANCE
Every 135 Hours
CAUTION!
Gasoline stored in the carburetor
for extended periods can cause
hard starting, and could also lead
to increased service and mainte-
nance costs.
Whenever the unit will not be used for
30 days or longer, use the following
procedures to prepare it for storage:
■Clean external parts thoroughly.
■Drain all the fuel from the carbure-
tor and the fuel tank.
IMPORTANT!
All stored fuels should be stabilized
with a fuel stabilizer such as
STA-BIL姞.
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 it
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
replace any worn or damaged parts.
■Remove the air cleaner element
from the carburetor and clean it
thoroughly with soap and water, let
dry and reassemble the element.
■Store the machine in a clean, dust-
free area.

9
Filling the Fuel TankMixing Fuel
1. Place the hedge trimmer on the
ground or on a flat surface.
2. Clear any dirt or other debris from
around the fuel filler cap.
3. Remove the fuel cap slowly, and fill
the fuel tank with clean, fresh fuel
mixture.
4. Replace and firmly tighten the fuel
cap.
CAUTION!
Some gasolines contain alcohol as
an oxygenate! Oxygenated fuels
may cause increased operating
temperatures. Under certain
conditions, alcohol-based fuels
may also reduce the lubricating
qualities of some mixing oils.
Never use any fuel containing
more than 10% alcohol by volume!
Generic oils and some outboard
motor oils may not be intended for
use in high-performance air cooled
2-cycle engines, and should never
be used in your Shindaiwa engine!
CAUTION!
This engine is designed to operate
on a 50:1 mixture consisting of
unleaded gasoline and a premium
2-cycle mixing oil only. Use of
Non-approved mixing oils can lead
to excessive maintenance costs
and/or engine damage.
■Use only fresh, clean unleaded
gasoline with a pump octane rating
of 87 or higher.
■Mix gasoline with 50:1 Shindaiwa
Premium 2-cycle mixing oil or with
an equivalent high quality 2-cycle
mixing oil.
Example of 50:1 mixing quantites:
■1 gallon of gasoline to 2.6 oz.
mixing oil.
■5 litres of gasoline to 100 ml.
mixing oil.
IMPORTANT!
Mix only enough fuel for your immedi-
ate needs! If fuel must be stored
longer than 30 days and Shindaiwa
One oil with fuel stabilizer is not
used, it should first be treated with a
fuel stabilizer such as StaBil™.
WARNING!
Minimize the risk of fire!
■STOP the engine before
refueling.
■ALWAYS allow the unit to cool
before refueling!
■Wipe all spilled fuel and move
the unit at least 10 feet (3
meters) from the fueling point
before restarting!
■NEVER start or operate this
unit if there is a fuel leak.
■NEVER start or operate this
unit if the carburetor, fuel lines,
fuel tank and/or fuel tank cap
are damaged.
■NEVER smoke or light any fires
near the unit or fuels!
■NEVER place any flammable
material near the engine
muffler!
■NEVER operate the engine
without the muffler and spark
arrester in place and properly
functioning!
OPERATION
16
HT2320
3. Remove the air cleaner element,
and wash the element in clean,
neutral solvent or warm soapy
water. Rinse the element thor-
oughly, and then squeeze dry
before reassembly.
4. Check the cutters for damage,
improper adjustment, or signs of
excess wear, and adjust or replace
as required.
How to Adjust the Cutter
Shoulder Bolts
1. Loosen all cutter locknuts.
2. Tighten each cutter shoulder bolt
firmly, and then loosen the shoul-
der bolts 1/4 to 1/2 turn.
3. Working from the powerhead, lock
each bolt in place by firmly tighten-
ing its locknut while preventing the
shoulder bolt from turning.
When shoulder bolt adjustment is
correct, there should be a gap of 0.25–
0.50mm between cutters and the flat
washer beneath each bolt head should
turn freely.
Air Cleaner
Element
MAINTENANCE
Every 100 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 refill,
hand-pack the gearcase with approxi-
mately 40–50 grams of high quality
lithium-based grease (50–70% of
capacity). DO NOT OVERFILL!
Air Cleaner Cover
Every 50 hours (Cont.)
HT2321
Locknut
Cutters
Shoulder
Bolt Washer (should
turn freely)
Guide Bar
CAUTION!
Operating the hedge trimmer
with worn or improperly adjusted
cutters will reduce cutting
performance and may also
damage the unit.

10
HT2311
HT2310
HT2308
HT2309
Starting Engine
2. Set the throttle trigger to the “fast
idle” position by performing the
following:
a. Depress and hold the throttle lock,
and then squeeze the throttle trigger.
b. Depress and hold the “fast idle”
button.
c. While depressing the fast idle
button, release the throttle lock and
throttle trigger.
Ignition
Switch
Throttle Trigger
Throttle
Lock
Fast Idle
Button
Primer Bulb (viewed
from rear)
WARNING!
KEEP CLEAR OF THE CUT-
TERS DURING STARTING
OPERATIONS! THE CUTTERS
MAY OSCILLATE WHEN THE
ENGINE IS STARTED!
■Place the trimmer on the ground
during all starting operations.
■Make sure you have a secure
footing, and keep a firm grip on
the unit as well.
■Keep all bystanders and pets
well clear of the trimmer during
starting operations.
Choke
Closed
Ignition ON
1. Slide the ignition switch to the “I”
position (engine ON).
3. Press the primer bulb until fuel can
be seen flowing in the transparent
return tube.
IMPORTANT!
Engine ignition is controlled by a two position switch mounted on the throttle
housing labeled, "I" for ON or START and "O" for OFF or STOP.
IMPORTANT!
The primer system only pushes fuel
through the carburetor. Repeatedly
pressing the primer bulb will not flood
the engine with fuel.
4. (Cold Engine Only) Set the choke
lever to the CLOSED position.
OPERATION
15
Gearcase Lubrication Schedule
Every 20 Hours
HT2323
HT2322A
VIEWED FROM THE BOTTOM
VIEWED FROM THE BOTTOM
Gearcase
Grease
Fitting
Gearcase
Cover
Socket-head
Capscrews
DO NOT
REMOVE
CONRODS!
CAUTION!
■Do not remove the conrods
from the cutters. Conrod
bearings can be lost or
damaged if disturbed.
■Over-lubricating may cause
the gearcase to run slower
than normal, and may also
cause leakage from excess
grease.
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
fitting.
MAINTENANCE
Every 50 hours
(more often in dusty or
extreme conditions)
HT2318
1. Remove the cylinder cover, and
clean any grass and debris from the
cylinder fins.
2. Remove and
inspect the
spark plug.
Replace any
damaged or
worn spark
plug with a
new Champion
CJ8 or equiva
HT2319
0.024"
(0.6mm)
Champion CJ8
Cover Clean Debris
lent spark plug of the same heat
range. Adjust spark plug gap to
0.024 inch (0.6mm) and reinstall. If
a torque wrench is available, torque
the plug to 148–165 in.-lbs.

11
When the engine starts or fires–
1. Open the choke by moving the
choke lever backward (toward the
fuel tank).
2. If the engine did not continue to
run, repeat the appropriate crank-
ing procedures for a cold or warm
engine.
3. When the engine starts, clear
excess fuel from the combustion
chamber by accelerating the engine
several times with the throttle
lever.
WARNING!
The cutting attachment will
oscillate when the engine
accelerates!
4. Operating the throttle will automati-
cally disengage the fast idle setting.
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 procedures for “Starting a
flooded engine,” on the next page.
HT2312
Starting the Engine (continued)
5. Place the unit on the ground. Grip
the engine cover with your left
hand and the starter handle with
your right hand (shown).
6. Pull the starter handle slowly
toward you until you feel the starter
mechanism engage.
7. Start the trimmer by pulling the
starting handle rapidly outward.
WARNING!
Never start the engine from the
operating position.
HT2325
Choke
Open
IMPORTANT!
If the engine fails to start after
several attempts with the choke in
the closed position, the engine may
be flooded with fuel. If flooding 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
next page "Starting a Flooded
Engine".
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.
OPERATION
14
Maintenance and Adjustments
IMPORTANT!
MAINTENANCE, REPLACEMENT
OR REPAIR OF EMISSION CON-
TROL DEVICES AND SYSTEMS
MAY BE PERFORMED BY ANY
REPAIR ESTABLISHMENT OR
INDIVIDUAL; HOWEVER, WAR-
RANTY REPAIRS MUST BE PER-
FORMED BY A DEALER OR SER-
VICE CENTER AUTHORIZED BY
SHINDAIWA KOGYO CO., LTD. THE
USE OF PARTS THAT ARE NOT
EQUIVALENT IN PERFORMANCE
AND DURABILITY TO AUTHORIZED
PARTS MAY IMPAIR THE EFFEC-
TIVENESS OF THE EMISSION
CONTROL SYSTEM AND MAY
HAVE A BEARING ON THE OUT-
COME OF A WARRANTY CLAIM.
WARNING!
Accidental start-ups can cause
severe injury! Before performing
any maintenance on this
equipment, stop the engine and
disconnect the spark plug!
Daily Maintenance/Inspection
1. Remove all grass clippings and dirt
from the hedge trimmer.
■ Remove any compacted debris
from around the fuel tank and/or
muffler.
■ Inspect the engine cooling fins
for clogging, and clean as neces-
sary.
■ Clean beneath the cylinder
cover and around the spark plug.
■ Inspect the air filter element for
clogging, clean as necessary.
2. Check for loose, damaged, or
missing components, and repair as
necessary.
3. Lubricate the cutters with oil before
use, and after refueling.
4. Check the cutters for damage or
improper adjustment, and adjust or
replace as necessary.
HT2317
Clean debris from
tank and muffler
Inspect cooling fins,
and clean as
required Clean around
spark plug
Inspect/clean air filter
element
Check cutters for
damage/correct
adjustment
Lubricate
cutters
WARNING!
To reduce fire hazard, keep the
engine and muffler free of debris,
leaves, or excessive grease.
MAINTENANCE

12
Starting a Flooded Engine
WARNING!
Burn danger from hot engine!
Allow engine to cool before
removing cylinder cover.
1. Disconnect the spark plug lead, and
then use the spark plug wrench to
loosen and remove the spark plug.
2. If the spark plug is fouled or is
soaked with fuel, clean or replace
the plug as necessary. For spark
plug specifications and gapping
procedure, see page 19.
3. With the spark plug removed, and
the ignition switch off, crank the
engine several times to clear
excess fuel from the combustion
chamber.
HT2313
Cover
Spark Plug
Spark Plug
Lead
4. Replace the spark plug and tighten
it firmly with the spark plug
wrench. If a torque wrench is
available, torque the spark plug to
148-165 inch-pounds (170-190 kg/
cm).
5. Replace the cylinder cover.
CAUTION!
Incorrect spark plug installation
can damage the engine!
6. Repeat the starting procedures for
a warm engine.
7. If the engine still fails to start or
fire, refer to the troubleshooting
chart at the end of this manual.
OPERATION
13
HT2315
HT2314
The engine must return to idle speed
whenever the throttle lever is re-
leased. Idle speed is adjustable, and
must be set low enough to permit the
engine clutch to disengage the
cutters.
Adjusting Engine Idle
Idle Speed Adjustment
1. Start the engine, and then allow it
to idle 2–3 minutes until warm.
2. If the cutters move when the
engine is at idle, reduce idle speed
by turning the idle adjustment
screw counterclockwise.
3. If a tachometer is available, the
engine idle speed should be final-
adjusted to
3,000 (±250) rpm (min-1).
4. Carburetor fuel mixture adjust-
ments are preset at the factory and
cannot be serviced in the field.
WARNING!
The cutters must NEVER engage
at engine idle speeds! If the idle
speed cannot be adjusted by the
above procedure, return the
trimmer to your Shindaiwa dealer
for inspection.
1. Cool the engine by allowing it to
idle for 2–3 minutes.
2. Move the ignition switch to the “O”
or STOP position.
Operation
■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
1/2 inch in diameter.
Stopping the Engine
Idle Adjustment
Screw
Ignition
Switch
Ignition OFF
OPERATION