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CRANKCASE AND CRANKSHAFT
REMOVING THE CRANKCASE BEARING
1. Remove:
• Bearing "1"
• Remove the bearing from the crankcase by
pressing its inner race.
• Do not use the removed bearing.
CHECKING THE TIMING CHAIN AND
TIMING CHAIN GUIDE
1. Inspect:
• Timing chain
Cracks/stiff → Replace the timing chain and
camshaft sprocket as a set.
2. Inspect:
• Timing chain guide
Wear/damage → Replace.
CHECKING THE CRANKCASE
1. Inspect:
• Contacting surface "a"
Scratches → Replace.
• Engine mounting boss "b", crankcase
Cracks/damage → Replace.
2. Inspect:
•Bearing
Rotate inner race with a finger.
Rough spot/seizure → Replace.
3. Inspect:
•Oil seal
Damage → Replace.
CHECKING THE CRANKSHAFT
1. Measure:
• Runout limit "a"
• Small end free play limit "b"
• Connecting rod big end side clearance "c"
• Crank width "d"
Out of specification → Replace.
Use the dial gauge and a thickness gauge.
Dial gauge and stand:
YU-3097/90890-01252