Troubleshooting; Starting Failure - Zenoah GZ381 Manual De Usuario

Daily maintenance
Check that the components of the
throttle trigger work safely. (Throttle
trigger lockout and throttle trigger.)
Clean the chain brake and check that
it operates safely. Make sure that the
chain catcher is undamaged, and re-
place it if necessary.
The bar should be turned daily for
more even wear. Check the lubrica-
tion hole in the bar, to be sure it is
not clogged. Clean the bar groove.
Check that the bar and chain are get-
ting sufficient oil.
Check the saw chain with regard to
visible cracks in the rivets and links,
whether the saw chain is stiff or
whether the rivets and links are ab-
normally worn. Replace if necessary.
Sharpen the chain and check its ten-
sion and condition. Check the drive
sprocket for excessive wear and re-
place if necessary.
Clean the starter unit's air intake.
Check that nuts and screws are tight.
Check that the stop switch works cor-
rectly.
Check that there are no fuel leaks
from the engine, tank or fuel lines.
Check that the chain does not rotate
when the engine is idling.

Starting failure

Check
Starter pawls
Fuel tank
36
Weekly maintenance
Check the starter, starter cord and
return spring.
Check that the vibration damping ele-
ments are not damaged.
Lubricate the clutch drum bearing.
File off any burrs from the edges of
the bar.
Clean or replace the spark arrestor
mesh on the muffler.
Clean the carburettor compartment.
Clean the air filter. Replace if neces-
sary.

Troubleshooting

Possible cause
Binding pawls
Incorrect fuel type.
Monthly maintenance
Check the clutch centre, clutch drum
and clutch spring for wear.
Clean the spark plug. Check that the
electrode gap is 0,5 mm.
Clean the outside of the carburettor.
Check the fuel filter and the fuel
hose. Replace if necessary.
Empty the fuel tank.
Empty the oil tank.
Check all cables and connections.
Action
Adjust or replace the pawls.
Clean around the pawls.
Contact an authorised service work-
shop.
Drain it and use correct fuel.
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