38
SAW CHAIN LUBRICATION SYSTEM
CS-370ES
CS-420ES
6-2 Inspecting oil line
1. Remove sprocket guard.
2. Remove inner sprocket guard plate.
3. Disconnect lower oil line (A) from auto-oiler
assembly and connect pressure tester 897803-
30133 (B) to oil line (A) with pipe joint V186-000020
(C).
4. Tighten oil cap and apply pressure approx. 9.8
kPa (0.1kgf/cm
2
) (1.4psi).
5. Pressure should not drop. If the pressure drops,
leakage may occur at oil cap, oil cap O-ring, mating
surface of oil tank, oil line, grommet, or oil tank vent.
Inspect them and replace defective part(s) with new
parts as required.
6-3 Inspecting oil tank vent
NOTE: Oil tank vent prevents a vacuum from
forming in oil tank when chain oil in the tank is
consumed.
1. Remove oil tank vent (A) using paper clip and
clean it.
2. Inspect oil tank vent lips (B) for hardness or are
opened. Replace as required.
3. Install oil tank vent (A) using suitable pusher (C)
as shown.
A
B
C
A
B
C
A
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