CRANKSHAFT
5-77
6. Measure:
• Crankshaft journal bearing inside diameter
“a”
Out of specification → Replace the crank-
case assembly.
NOTE:
Measure the inside diameter of each crankshaft
journal bearing at two places.
7. Calculate:
• Crankshaft-journal-to-crankshaft-journal-
bearing clearance
Out of specification → Replace the crank-
shaft and crankcase as a set.
NOTE:
Calculate the clearance by subtracting the
crankshaft journal diameter from the crankshaft
journal bearing inside diameter.
EAS26150
INSTALLING THE CONNECTING RODS
1. Lubricate:
• Bolt threads
(with the recommended lubricant)
2. Lubricate:
• Crankshaft pin
• Big end bearings
• Connecting rod inner surface
(with the recommended lubricant)
3. Install:
• Big end bearings
• Connecting rods
• Connecting rod caps
(onto the crankshaft pin)
NOTE:
• Align the projections “a” on the big end bear-
ings with the notches “b” in the connecting rods
and connecting rod caps.
• Be sure to reinstall each big end bearing in its
original place.
• Make sure the projection “c” on each connect-
ing rod faces towards the left side of the crank-
shaft.
• Make sure the characters “d” on both the con-
necting rod and connecting rod cap are
aligned.
Crankshaft journal diameter
49.968–49.980 mm (1.9672–
1.9677 in)
Crankshaft journal bearing inside
diameter
50.010–50.030 mm (1.9689–
1.9697 in)
Crankshaft-journal-to-crankshaft-
journal-bearing clearance
0.030–0.060 mm (0.0012–0.0024
in)
a
a
a
Recommended lubricant
Molybdenum disulfide grease
Recommended lubricant
Engine oil
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