Engine / Cooling
3.53
Engi ne Inspec tion -- All Engines
Connecting Rod (Big End) Radial Clearance
1. Rotate rod on crankshaft and check for rough spots.
Check radial end play in rod by securing crankshaft
in a holding fixture. Set up a dial indicator as shown
in illustration at right. Support connecting rod
against one thrust washer and apply up and down
pressure on connecting rod. Read total movement
of indicator and compare to specifications. Replace
rod, bearing, pin, and thrust washers if clearance is
excessive. Important Note: A very small amount
of radial play is normal and may be barely
perceptible when inspecting by feel.
NOTE: Specialized equipment and a sound knowledge of crankshaft repair and straightening is required to per-
form crankshaft work safely and correctly. Crankshaft repair should be performed by trained Polaris service tech-
nicians in a properly equipped shop.
Dial
Indicator
Crankshaft
Connecting
Rod
Connecting Rod Big End Radial Clearance
Standard: .0015² - .0018² (.038-.046mm)
Service Limit: .0021² (.053mm)
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