Polaris 2000 120 XCR Service Manual page 62

4. Lubricate bearing surfaces of camshaft. Align the timing
mark on the crankshaft gear with the timing mark on the
camshaft (3) and install the camshaft in the crankcase as
shown in the illustration.
CAUTION
Incorrect valve timing will cause
engine malfunction.
3
5. Adjust end play to the specified values using the proper
spacer. The proper spacer may be determined in the
following manner.
• Measure the depth A1 (From mating surface to the
inner race of the ball bearing).
ENGINE / CARBURETOR / CLUTCH
• Measure the height B1 (From mating surface to the
crank gear).
*MM=(A1+0.3)-B1=SIDE Clearances)
*SIDE CLEARANCE-0.2 = THICKNESS OF
CRANKSHAFT SHIM(mm) required
**STD=(A1+0.012")-B1=SIDE CLEARANCE
(inches)
**SIDE CLEARANCE-0.008" = THICKNESS OF
CRANKSHAFT SHIM(inches) required
Following are available spacer shims.
Size
T=0.6mm (0.024")
T=0.8mm (0.031")
T=1.0mm (0.039")
= In. / mm.
Crankshaft
3086537
3086538
3086539
4.23
4