CS-350WES
41
SAW CHAIN LUBRICATION SYSTEM
6-2 Checking oil pipe
1. Remove guide bar, chain and sprocket guard.
2. Remove chain catcher, spiked bumper and
sprocket guard plate.
3. Disconnect lower oil pipe (A) from auto-oiler
assembly and connect pressure tester 897803-
30133 (B) to oil pipe (A).
4. Tighten oil cap and apply pressure approx. 9.8kPa
(0.1kgf/cm
2
)
5. Pressure should not drop. If the pressure drops,
leakage may occur at oil cap, oil cap O-ring, oil tank,
oil pipe, grommet, or oil tank check valve. Check
them and replace defective part(s).
(A)
(B)
(B)
(A)
(C)
6-3 Checking oil tank check valve
NOTE: The oil tank check valve prevents a vacuum
from forming in oil tank when chain oil in the tank is
consumed.
1. Remove oil tank check valve (A) and clean it.
2. Check if the valve lips (B) are hardened or left
opened. Replace as required.
3. There is two different shape of engine cover for
check valve. One has space for O-ring (C), and the
other does not have the space. Install check valve
as shown.
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