Table 2

Engine speed insufficient

Machine does not trim properly

Eengine runs normally

Engine overheated

Firing function defective

Carburetor defective

Other troubles

Blade does not cut well

Blade does not rotate

Improper fuel used

 

 

 

 

 

 

 

 

 

Use fuel with correct mixing ratio.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Never use gasoline of poor quality.

Spark plug defective (burnt)

 

 

Replace.

 

 

As cooling fins clogged, air

 

 

Clean fins.

 

 

does not pass well

 

 

 

Excessive deposits in

 

 

 

 

 

 

 

 

 

Disassemble and remove carbon.

 

 

 

 

 

 

 

 

 

combustion chamber

 

 

 

Plug damaged or fouled

 

 

 

 

 

Replace or clean.

 

 

 

 

 

Combustion poor due to

 

 

 

 

Check wiring.

 

 

 

 

defective wiring

 

 

 

High-speed needle

 

 

 

 

 

 

 

 

 

 

 

 

 

Readjust.

 

 

 

 

 

 

 

 

 

 

 

 

 

setting incorrect

 

 

 

Carburetor overflow

 

 

 

 

 

 

 

 

 

Refer to Table 1.

 

 

 

 

 

 

 

 

 

Air cleaner clogged

 

 

 

 

 

 

 

 

 

 

 

 

Clean as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

Compression insufficient

 

 

Disassemble, check and replace

 

 

(piston ring stuck or worn

 

 

if necessary.

out)

 

 

 

Cylinder chromium plating

 

 

 

Replace cylinder.

 

 

 

peeled or worn out

 

 

 

Exhaust port clogged with

 

 

 

 

 

 

 

Clean as necessary.

 

 

 

 

 

 

 

carbon

 

 

 

Throttle is not fully open

 

 

 

 

 

 

 

 

Readjust.

 

 

 

 

 

 

 

 

Improper setting

 

 

 

 

Set properly.

 

 

 

 

Height of cutter uneven

 

 

 

Correct properly.

 

 

 

Overloaded

 

 

 

 

 

 

 

 

 

 

 

 

Adjust load.

 

 

 

 

 

 

 

 

 

 

 

 

Clutch shoe worn out

 

 

 

 

 

 

 

 

 

Replace.

 

 

 

 

 

 

 

 

 

LONG TERM STORAGE

∙Inspect and adjust every part of the unit.

-Completely clean every part, and repair, if necessary.

-Apply thin coating of oil on metal parts to prevent rust.

-Remove the cutter head, apply sufficient oil coating and wrap up in plastic.

∙Drain fuel tank, pull starter handle slowly a few times to drain fuel from carburetor.

∙Pour a small amount of clean motor oil into spark plug hole, pull starter handle and then crank the engine until TOP DEAD CENTER.

∙Store in a dry area, free from dust.

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