Shindaiwa 81644 User Manual

12

NEVER operate the unit with the cut-

ting attachment shield or other protective 

devices removed!

 

WARNING!

A cutting attachment shield or other 

protective device is no guarantee of 

protection against ricochet. YOU MUST 

ALWAYS GUARD AGAINST FLYING 

DEBRIS!

Use only authorized Shindaiwa parts and 

accessories with your Shindaiwa trimmer. 

Tilt the handle 

about 100° to the 

left (from hori-

zontal) and move 

forward, holding 

the trimmer verti-

cally as shown in 

Figure 23.

Your Shindaiwa unit may be equipped  

with one of several Shindaiwa trimmer 

head models, each with features for  

specific applications and/or operational 

requirements.

NOTE:

For proper operation, always refer to the 

instructions accompanying the trimmer head 

being used. Available trimmer head styles 

include:

n

 

Semi-automatic. Trimmer line is 

indexed when the operator taps the  

trimmer head on the ground during 

operation.

n

 

Manual. The operator indexes line man-

ually with the grass trimmer stopped.

n

 

Fixed. The operator must stop the unit 

and add new lengths of trimmer line 

manually.

n

 

Flail. This device, designed for clearing 

weeds and light brush, features three 

nylon blades attached to the head by 

pivots.

NOTE:

Additional hardware may be required to 

mount the Fixed Line or the Flail type trim-

mer heads.

Cutting Grass—Units equipped with a trimmer head

CAUTION!
Operation at low RPM can lead to  

premature clutch failure.

Checking Unit Condition

Shoulder Strap C242

CAUTION!
Operation of trimmer without a cutting 

attachment shield and using excessive 

line length can lead to premature clutch 

failure.

Do not make modifications to this unit with-

out written approval from Shindaiwa, Inc.
ALWAYS make sure the cutting attach-

ment is properly installed and firmly 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 fits properly into the appropriate 

attachment holder. If a properly installed 

attachment vibrates, replace the attach-

ment with new one and re-check. 

ALWAYS stop the engine immediately  

and check for damage if you strike a for-

eign object or if the unit becomes tangled. 

Do not operate with broken or damaged 

equipment.
NEVER allow the engine to run at high 

RPM without a load. Doing so could  

damage the engine.
NEVER operate a unit with worn or  

damaged fasteners or attachment holders.

CAUTION!
Do not push the rotating line into trees, 

wire fences or any material that could 

tangle or break line ends.

Operate the unit at full throttle while cut-

ting grass.

 

WARNING!

 

  Always wear a shoulder strap 

or harness when operating this unit. Us-

ing a harness with a brushcutter allows 

you to maintain proper control of the unit 

and reduces fatigue during extended 

operation.

IMPORTANT!

Adjust the shoulder strap 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 adjustment devices are secure.

Hold the trimmer so the trimmer head is 

angled slightly into the area to be cut. To 

ensure maximum trimmer-line service life, 

cut only with the tip of the trimmer line. 

Cut grass by swinging the trimmer from 

left to right. Keep the trimmer head  

horizontal. See Figure 22.

CUTTING

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