3.19
ENGINE
3
9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
4. Measure free length of tensioner spring. Replace
spring if excessively worn. Compare to specifications.
5. Replace entire tensioner assembly if any part is worn
or damaged.
Rocker Arm / Shaft Inspection
1. Mark or tag rocker arms to keep them in order for
assembly.
2. Inspect each rocker arm cam follower surface. If there
is any damage or uneven wear, replace the rocker
arm.
NOTE: Always inspect camshaft lobe if rocker arms
are worn or damaged.
3. Measure O.D. of rocker shaft. Inspect it for wear or
damage. Compare to specifications.
4. Measure I.D. of each rocker arm and compare to
specifications.
5. Measure I.D. of both rocker arm shaft supports and
visually inspect surface. Compare to specifications.
Tensioner Spring Free Length:
2.02” (5.13 cm)
Rocker Shaft O.D.:
.8656-.8661” (21.987-22.0 mm)
Rocker Arm & Support I.D.:
.8669-.8678” (22.020-22.041 mm)
To Next Page
Loading...
Need help?
General
