ENGINE 3-85
CRANKSHAFT THRUST CLEARANCE
ADJUSTMENT
• With the crankshaft’s right-side and left-side thrust bearings
inserted into the upper crankcase, measure the thrust clear-
ance between the left-side thrust bearing and the crankshaft
using the thickness gauge.
R: Right-side thrust bearing
L: Left-side thrust bearing
A: Front
NOTE:
Pull
1
the crankshaft to the left so that there is no clearance on
the right-side thrust bearing.
# Crankshaft thrust clearance
Standard: 0.04 – 0.09 mm (0.002 – 0.004 in)
If the thrust clearance exceeds the standard range, adjust the
thrust clearance as follows:
• Remove the right-side thrust bearing and measure its thick-
ness using the micrometer. If the thickness of the right-side
thrust bearing is below standard, replace it with a new bearing
and measure the thrust clearance again, as described above.
# Right-side thrust bearing thickness
Standard: 2.425 – 2.450 mm (0.0955 – 0.0965 in)
• If the right-side thrust bearing is within the standard range, re-
insert the right-side thrust bearing and remove the left-side
thrust bearing.
• With the left-side thrust bearing removed, measure the clear-
ance using the thickness gauge as shown. Then, select a left-
side thrust bearing from the selection table. ($3-86)
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