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4. Examine the groove in the guide bar for wear.
Replace the guide bar if it is necessary. (Fig. 135)
5. Examine if the guide bar tip is rough or very worn.
(Fig. 136)
6. Make sure that the bar tip sprocket turns freely and
that the lubricating hole in the bar tip sprocket is not
blocked. Clean and lubricate if it is necessary. (Fig.
137)
7. Turn the guide bar daily to extend its life cycle. (Fig.
138)
To do a check of the spur sprocket
The clutch drum has a spur sprocket that is welded on
the clutch drum.
(Fig. 139)
•
Regularly do a visual check of the degree of wear on
the spur sprocket. Replace the clutch drum with the
spur sprocket if there is too much wear.
To lubricate the needle bearing
1. Pull the front hand guard rearward to disengage the
chain brake.
2. Loosen the bar nuts and remove the clutch cover.
Note: Some models have only one bar nut.
3. Put the product on a stable surface with the clutch
drum up.
4. Remove the clutch drum and lubricate the needle
bearing with a grease gun. Use engine oil or a
bearing grease of high quality. (Fig. 140)
To do maintenance on the fuel tank
and the chain oil tank
•
Drain and clean the fuel tank and the chain oil tank
regularly.
The engine does not start
Product part to examine
Starter pawls
1284 - 002 - 14.10.2019
•
Air cleaning system
AirInjection
removes dust and dirt before the particles are caught by
the air filter. AirInjection
and the engine.
(Fig. 141)
To clean the cooling system
The cooling system keeps the engine temperature
down. The cooling system includes the air intake on the
starter (A) and the air guide plate (B), the pawls on the
flywheel (C), the cooling fins on the cylinder (D) and the
cylinder cover (E).
(Fig. 142)
1. Clean the cooling system with a brush weekly or
2. Make sure that the cooling system is not dirty or
Troubleshooting
Possible cause
The starter pawls are blocked.
Replace the fuel filter yearly or more frequently if
necessary.
CAUTION: Contamination in the tanks
causes malfunction.
™
is a centrifugal air cleaning system that
™
extends the life of the air filter
more frequently if it is necessary.
blocked.
CAUTION: A dirty or blocked cooling
system can make the product too hot,
which can cause damage to the product.
Action
Adjust or replace the starter pawls.
Clean around the pawls.
Speak to an approved service work-
shop.
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