Service Manual

NOTE: Crankshaft oil clearance can be measured by
using a plastic gauge as follows:
A. Remove oil, grease and any other foreign materi-
al from crankshaft journal and bearing inner sur-
face.
B. Install the crankshaft.
Plastic gauge
Figure 230
C. Cut plastic gauge to same length as width of
bearing and put it on journal in parallel with its axis.
D. Gently put main bearing cap over plastic gauge
and tighten bolts to the specified torque. DO NOT
rotate connecting rod or crankshaft when plastic
gauge is installed.
E. Remove bolts and gently remove main bearing
cap.
F. Measure width of smashed plastic gauge (at its
Figure 231
widest section).
Rear Oil Seal Inspection
1. Check rear oil seal for wear, damage or hardening.
Replace
rear oil seal if necessary. It is recommended
that you install a new rear oil seal when rebuilding the
engine.
Liquid Cooled Gas Engine
Page 3
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Workman 3000/4000 Series