Shindaiwa X7502863800, DH231 User Manual

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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.




The Shindaiwa 231 series of handheld 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!


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.


The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.







Attention Statements...............................


Mixing Fuel..............................................




General Safety Instructions....................


Filling the Fuel Tank...............................


Long Term Storage................................


Unit Description.......................................


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


Troubleshooting Guide.........................




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




Emission Control.....................................







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.

Attention Statements

Throughout this manual are special “attention statements”.


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.


A statement preceded by the triangular attention symbol and the word “WARNING” contains information that should be acted upon to prevent serious bodily injury.


A statement preceded by the word “IMPORTANT” is one that possesses special significance.


A statement preceded by the word “CAUTION” contains information that should be acted upon to prevent mechanical damage.


A statement preceded by the word “NOTE” contains information that is handy to know and may make your job easier.

Safety and operation labels

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.



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!

Operating Precautions

Stay Alert

You must be physically and mentally fit to operate this unit safely.


Never make unauthorized attachment installations. Always use genuine Shindaiwa parts and accessories when repairing or maintaining this unit.


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.

■■Never transport the hedge trimmer or leave it unattended with the engine running. An engine that’s running could be accidently accelerated causing the blades to oscillate.

■■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 firmly 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 serviceable one and make sure it fits 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 articulated hedge trimmer. Fumes from engine exhaust can cause serious injury or death. Never run the engine indoors!


■■Never smoke or light fires near the hedge trimmer. Keep the unit away from excessive heat. Engine fuel is very flammable and fire could lead to serious personal injury or property damage.

■■Make sure the cutters are correctly adjusted before operating the hedge trimmer (see the section ”Cutter Blade Adjustment” for cutter adjustment procedures). Never attempt cutter adjustment with the engine running!

■■Before starting the engine, make sure the cutter is not contacting anything.

■■Always confirm 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 springback 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 refueling. Avoid overfilling and wipe off any fuel that may have spilled.

■■To reduce fire hazard, keep the engine and muffler 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.


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



Moving parts can amputate fingers 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 openings.


Operation of this equipment may create sparks that can start fires around dry vegetation. This unit is equipped with a spark arrestor and a spark arrestor may be required. The operator should contact local fire agencies for laws or regulations relating to fire prevention requirements.


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.

Cutter Blades

Blade Cover


Safety (continued)

Operating the Hedge Trimmer

ALWAYS protect yourself from hazards such as thorny brush and flying debris by wearing gloves and close fitting 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

contact buildings or other hard objects!

ALWAYS stop the engine and install cover before moving to another work and maintain a firm footing while carrying the trimmer.

NEVER cut metal objects or wire with the blade.

USE EXTREME CAUTION when operating near fences or electric wiring.

NEVER allow children to use the unit. Avoid operating near bystanders.

ALWAYS operate with both hands firmly gripping the unit.

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.


ALWAYS keep proper footing and do not overreach. Maintain your balance at all times during operation.




Always maintain this unit accord-

Never allow the engine to run at high

Never place flammable material close

ing to this owner’s manual and fol-

RPM without a load. Doing so could

to the engine muffler and never run

low the recommended scheduled

damage the engine.

the engine without the spark arrestor


When transporting the unit in a vehi-

screen in place.

Never modify or disable any of the

cle, tie it down securely to prevent fuel

Keep the cutters sharp and properly

unit’s safety devices.

spillage or damage to the machine.


Always use genuine Shindaiwa parts

Always stop the engine and allow it to

Keep the unit as clean as possible.

and accessories when repairing or

cool before refuelling. Avoid overfilling

Keep it free of loose vegetation, mud,

maintaining this machine.

and wipe off any fuel that may have


Do not make unauthorized modifica-


Always clear your work area of trash

tions to the unit.


or hidden debris to help ensure good








Product Description




Front handle

Using the illustration as a guide, famil-


iarize yourself with this unit and its vari-


ous components. Understanding your


machine helps ensure top performance,


longer service life, and safer operation.


Throttle interlock


Throttle trigger


Rear handle


Do not alter this machine or any of its components!


Recoil starter

On/Off Switch

Blade cover

Air filter cover

Fuel tank





Engine Type

2-cycle, horizontal cylinder, air cooled

Engine Bore x Stroke

32mm x 28mm (1.26 X 1.10 in)

Engine Displacement

22.5cc (1.37 in3)

Unit Weight, Less Fuel

5.8 kg (12.8 lb)

6 .1 kg (13.4 lb)

Unit Dimensions (LxWxH)

1080 x 250 x 210 mm (42.52 x 9.84 x 8.27 in)

1220 x 250 x 210 mm (48.03 x 9.84 x 8.27 in)

Fuel Tank Capacity

0.53 liter (18.0 oz.)

Fuel/oil ratio

50:1 with *ISO-L-EGD or JASO FD class 2-cycle Mixing Oil


Diaphragm type


Fully electronic, transistor controlled

Spark Plug


Electrode Gap

0.6 mm (0.024 in)


150 - 170 kgf•cm / 130 - 150 in•lbf

Air Cleaner

Foam element

Muffler Type

Spark arrestor muffler or spark arrestor muffler with catalyst

Starting Method

Recoil type

Stopping Method

Slide switch,grounding type

Blade Length

605 mm (23.82 in)

745 mm (29.33 in)

Blade Type

Double-blade cutting action: double-edged blade

Clutch Type

Centrifugal clutch, dry-type

Gear Type

Spur gears

Gear Lubrication

Lithium-based grease

Standard Equipment

Rear handle w/integral controls, anti-vibe mountings, front handle w/guard, tool set, blade cover.

Engine Speed

3,000 RPM

Clutch Engagement Speed

4,100 RPM

Wide Open Throttle Speed (W.O.T.)

11,000 RPM

Specifications are subject to change without notice.

IMPORTANT This spark ignition system complies with the Canadian standard ICES-002.


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 Modification 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.

An Emission Control Label is located on the unit. (This is an EXAMPLE ONLY; information on label varies by engine FAMILY).


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.

Mixing Fuel


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 OneTM 2-Stroke Oil is strongly recommended as it meets this standard and is specifically formulated for use in all Shindaiwa 2-stroke engines. Engine problems due to inadequate lubrication caused by failure to use an ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345/FD certified 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 specified 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.

Examples of 50:1 mixing quantities


Handling Fuel


Fuel is VERY flammable. 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 flames 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 fill fuel tanks indoors. ALWAYS fill fuel tanks outdoors over bare ground.

DO NOT overfill 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.

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.


Spilled fuel is a leading cause of hydrocarbon emissions. Some states may require the use of automatic fuel shut-off 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.

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 flames.


Stored fuel may separate. ALWAYS shake fuel container thoroughly before each use.

Filling the Fuel Tank


Minimize the Risk of Fire

NEVER smoke or light fires near the engine.

ALWAYS stop the engine and allow it to cool before refueling.

ALWAYS Wipe all spilled fuel and move at least 3 meters (10 feet) from the fueling point and source before starting.

NEVER place flammable material close to the engine muffler.

NEVER operate the engine without the muffler and spark arrester screen in place and in good working condition.


ALWAYS store gasoline in a container approved for flammable liquids.

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 at least 3 meters (10 feet) away from a fuel storage area or other readily flammable materials before starting

the engine.

1.Place the unit on a flat, level surface.

2.Clear any dirt or other debris from around the fuel filler cap.


Slowly remove the fuel cap only after stopping the engine.

3.Remove the fuel cap, and fill the tank with clean, fresh fuel.

4.Reinstall the fuel filler cap and tighten firmly.

5.Wipe away any spilled fuel before starting engine.


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