Polaris 2005 SPORTSMAN 400, Servise Manual

Page: 76 / 312

ENGINE
3.16
ROCKER ARM/SHAFT
INSPECTION, CONT.
Rocker Arm & Support I.D.:
.8669-.8678
I
(22.020-22.041 mm)
4. Measure I.D. of each rocker arm and compare to
specifications.
Rocker Shaft Oil Clearance:
Std: .0008-.0021
I
(.020-.054 mm)
Limit: .0039
I
(.10 mm)
5. Measure I.D. of both rocker arm shaft supports
and visually inspect surface. Compare to
specifications.
6. Subtract rocker shaft O.D. from rocker arm &
shaft support I.D. This is the oil clearance.
Compare to specifications.
7. Inspect rocker adjuster screws for wear, pitting, or
damage to threads of the adjuster or locknut.
Replace all worn or damaged parts. NOTE: The
end of the adjuster screw is hardened and cannot
be ground or re-faced.
CAMSHAFT REMOVAL
1. Remove thermostat housing.
2. Remove camshaft sprocket inspection cover.