Shindaiwa 81645 User Manual

The Shindaiwa 4 Series hand held power 

equipment has been designed and built to 

deliver superior performance and reliability 

without compromise to quality, comfort, 

safety or durability. 
Shindaiwa engines represent the leading 

edge of high-performance engine technol-

ogy, 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!

Shindaiwa Inc. reserves the right to make 

changes to products without prior notice, 

and without obligation to make alterations 

to units previously manufactured.

WARNING!
Never operate  

power equipment of any  

kind if you are tired or if you are under 

the influence of alcohol, drugs, medica-

tion or any other substance that could 

affect your ability or judgement.

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 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 

242 series hand held power equipment, 

or if you do not understand 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.

Introduction

PAGE

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

Safety Instructions .......................................

Safety Labels .................................................4 

Product Description .....................................5

Specifications ................................................5

Assembly and Adjustments .........................6

Mixing Fuel ..................................................7

Starting the Engine ......................................8

Stopping the Engine ....................................9

Adjusting Engine Idle ..................................9

Checking Unit Condition.............................9

Using a Hand Held Edger .........................10

Adjusting the Cutting Depth .....................10

General Maintenance ................................11

Replacing the Edger Blade........................14

Long Term Storage ....................................14

Troubleshooting Guide .............................15

Emission System Warranty .......................17

Contents

IMPORTANT!

The information contained in this owner’s/

operator’s manual describes units avail-

able at the time of publication. 

CAUTION!
A statement preceded by the word 

“CAUTION” contains information that 

should be acted upon to prevent me-

chanical damage.

WARNING!
A statement preceded by the 

triangular attention symbol and 

the word “WARNING” contains infor-

mation that should be acted upon to 

prevent serious bodily injury.

Shindaiwa Edgers operate at very  

high speeds and can do serious damage  

or injury if they are misused or abused.  

You must be physically and mentally fit to 

operate this unit safely. 

Safety Instructions

WARNING!
Minimize the Risk of Fire

NEVER smoke or light fires near  

the engine.
ALWAYS stop the engine and allow it 

to cool before refueling. Avoid overfill-

ing 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 materials before 

starting the engine.
NEVER place flammable material 

close to the engine muffler.
NEVER operate the engine without 

the spark arrester screen in place.

WARNING!
Never make unauthorized  

attachment installations. Do not use at-

tachments not approved by Shindaiwa 

for use on this unit. 

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 significance.

Attention Statements

WARNING!
The engine exhaust from this 

product contains chemicals known to 

the State of California to cause can-

cer, birth defects or other reproductive 

harm.

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.

Keep feet away from blade.

Rotating blade may cause

injury. Blade may continue

to rotate after unit is shut off.