Sea-doo SP Shop Manual page 76

Section 03 ENGINE
Sub-Section 06 (BOTTOM END)
Crankshaft Deflection
Crankshaft deflection is measured each end with
a dial indicator.
First, check deflection with crankshaft in crank-
case. If deflection exceeds the specified toler-
ance, it can be either ball bearings wear, bent or
twisted crankshaft at connecting rod journal.
F01D1SA
1. Measuring PTO side deflection in crankcase
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F01D1TA
1. Measuring MAG side deflection in crankcase
Remove crankshaft bearings and check deflection
again on V-shaped blocks as illustrated.
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F01D1UA
1. Measuring MAG side deflection on V-shaped blocks
F01D1VA
1. Measuring PTO side deflection on V-shaped blocks
NOTE: Crankshaft deflection can not be correctly
measured between centers of a lathe.
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