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33
IV.. ENGINE
5. CRANKSHAFT AND CRANKCASE
e
Fig. 4-39
(1) Upper crankcase
(6) Ball bearing
(11) Left crankshaft
(2) Dil gutter
(7) Right crankshaft
(12) Snap ring
(3) Connecting rod
(8) Center crank weight
(13) Woodruff key (25 x l4mm)
(4) Roller retainer
(9) Ball bearing
(14) Center bearing cap
(5) Roller
(lO) Center crankshaft
(15) Lower crankcase
Please note: The individuaI crankshaft parts afe not alI available.
Disassembly
l. Remove the cylinder head. (See page 23.)
2. Remove the cylinder and pistons. (See page 30.)
3. Remove the left crankcase cover and generator rotar. (See
page 54.)
4. Remove the starting sprocket, starting motor sprocket and
starting chain. (See page 60.)
5. Remove the right crankcase cover, oil fllter, clutch and oil
pump. (See page 36.)
6. Pry off the snap ring from the gearshift spindle.
7. Loosen off four 6mm bolts that se cure the upper crankcase
to the lower half.
8. With the upper crankcase facing down, loosen off six 6mm
bolts and four 8mm bolts securing the crankcase.
9. Separate the lower crankcase from the upper crankcase
while disengaging the hook of the gearshift arm from the
gearshift drum and lightly tapping the upper case with a
wooden hammer.
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