Crankshaft Runout - Arctic Cat Sno Pro 500 Operator's Manual

2. The diameter measurement must be within
1.0631-1.0634 in.

Crankshaft Runout

1. Using the V Blocks (p/n 0644-535), support the
crankshaft on the surface plate.
NOTE: The V blocks should support the crank-
shaft on the outer bearings.
2. Mount a dial indicator and base on the surface
plate. Position the indicator contact point against
the crankshaft location point A (PTO-end) from
the crankshaft end. Zero the indicator and rotate
the crankshaft slowly. Note the amount of crank-
shaft runout (total indicator reading).
NOTE: For runout location point specifications,
see Crankshaft Runout/Repair Specifications in
Section 1 of this manual.
3. Position the indicator contact point against the
crankshaft location point B (MAG-end) from the
crankshaft end. Zero the indicator and rotate the
crankshaft slowly. Note the amount of crankshaft
runout (total indicator reading).
4. Position the indicator contact point against the
crankshaft at location point C (center). Zero the
indicator and rotate the crankshaft slowly. Note
the amount of crankshaft runout (total indicator
reading).
5. If runout exceeds 0.002 in. at any of the check-
points, the crankshaft must be either straightened
or replaced.
48
Assembling Engine
NOTE: The use of new gaskets and seals is rec-
ommended when assembling the engine.
NOTE: Prior to assembling the engine, use parts
cleaning solvent and compressed air and thor-
oughly clean the threaded holes of the crankcase
and cylinders to properly tighten.
Always wear safety glasses when drying components
with compressed air.
NOTE: When the use of a lubricant is indicated,
use Arctic Cat Synthetic APV 2-Cycle Oil.
1. Apply a thin coat of grease to the inner seal lips of
0742-727
the water pump seal.
2. Using the seal driver, position the inner water
pump shaft seal onto the seal driver and gently tap
the seal down into position.
NOTE: Grease must be applied to the lips of the
inner seal before installation.
NOTE: The seal must be installed with its spring
side towards the crankshaft.
3. Install the snap ring securing the inner seal in the
crankcase.
FC046
! WARNING
MS986A
MS415