60
GUIDE BAR MOUNTING SYSTEM
CS-370ES
CS-420ES
10-1 Replacing chain tensioner
1. Remove sprocket guard from the unit.
2. Remove outer sprocket guard plate (A) from
sprocket guard. Remove tensioner screw (B),
chain tensioner (C) and bevel gears (D) (E) and
collar (F).
3. Inspect them for damage or wear. Replace as
required.
4. Install bevel gear (E) into sprocket guard.
5. Screw chain tensioner (C) on tensioner screw
(B).
6. Set bevel gear (D) in collar (F) and insert ten-
sioner screw (B) with chain tensioner (C) in bevel
gear with collar (F).
7. Install sub-assembled tensioner screw in slot (G)
of sprocket guard, confi rming engagement of bevel
gear (D) and (E).
8. Reinstall outer sprocket guard plate (A).
10-2 Replacing guide bar stud
1. Remove oil cap and empty oil in tank.
2. Remove inner sprocket guard plate.
3. Push defective guide bar stud into oil tank by
tapping with copper hammer and make the guide
bar stud breaks through plastic layer covering head
of the stud. Remove fl akes of plastic and stud from
oil tank.
A
B
C
D
E
F
D
E
G
G
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