Yamaha YQ50 Service Manual page 83

ENGINE ASSEMBLY AND ADJUSTMENT
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5. Attach :
• Crankshaft installation tool Q, W, E, R
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NOTE:
Hold the connecting rod at top dead center with
one hand while tightening the nut of the
installation tool with the other. Tighten the
installation tool until the crankcase halves close
with one another.
6. Install :
• Right crankcase
7. Tighten :
• Crankcase holding screws
NOTE:
Tighten the crankcase holding screws in stages,
using a crisscross pattern.
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8. Check :
• Crankshaft operation
Unsmooth operation © Repair.
CAUTION:
Never hit on the crankshaft.
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9. Install :
• Oil seal stopper plate
4-22
ENG
Crankshaft installation tool :
Q : 90890-01274
W : 90890-01275
E : 90890-01277
R : 90890-01411
Crankcase holding screw :
15 Nm (1,5 m.kg)
Screw (oil seal stopper plate) :
8 Nm (0.8 m.kg)