Service Manual

8-11
Table of Contents
Inspection
Twin Cylinder Engine Service Manual
February 2017 - Digital Edition
ENGINE INSPECTION AND RECONDITIONING
Lower End Inspection and Reconditioning
Crankshaft
1. Inspect all three bearings for wear, pitting or other damage.
2. Measure each bearing surface (upper bearing, rod bearing, and lower bearing), compare to specications.
(Figure 8).
Crank Bearing
Standard 1.5735-1.5744 in. (39.966-39.991 mm)
Service Limit 1.5551 in. (39.50 mm)
3. Inspect and clean lubrication channel from lower bearing to crank pin journal.
4. Inspect the timing gear teeth.
5. Inspect both keyways (ywheel and PTO) for damage.
6. Inspect the threads for damage at each end of the crankshaft.
7. Replace crankshaft if out of specication or damaged.
Figure 8