CS-350WES
50
SAW CHAIN LUBRICATION SYSTEM
7-11 Installing piston into cylinder
1. Apply 2-stroke oil inside cylinder, groove of oil
seal, piston ring, ball bearing and both sides of con-
rod.
2. Meet end gap of piston ring with locating pin (B).
NOTE: When installing piston in cylinder, do not
rotate upper crankcase half (cylinder) to avoid
breakage of piston ring and scoring cylinder bore.
3. Install piston in cylinder with arrow (A) pointing to
muffler side.
4. Make sure that rims of oil seal are properly seated
in the grooves of the upper crankcase half.
5. Apply a liquid gasket (Loctite #515 or equivalent)
on seams (C) of lower crankcase half.
6. Apply adhesive (Loctite #675 or #638 or
equivalent) on bearing bores (D) of lower crankcase
half.
7. Apply 2-stroke oil in oil seal groove.
8. Set crankcase halves and fasten 4pcs of bolts.
7-12 Installing engine block
1. Install cushion between engine block and engine
cover, and fasten 2pcs of bolts (M5X20) (E) on upper
engine cover and 2pcs of bolts (M5X30) (F) on lower
engine cover.
2. Install all other removed parts.
NOTE: It is IMPORTANT to retighten muffler bolts
after running test.
(B)
(A)
(C)
(D)
E
F
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