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9930588 R02 - 2017-2020 RZR 900 900/S 900/S4 1000/S 1000/S4 Service Manual
© Copyright Polaris Industries Inc.
5. Measure each bearing journal in two locations, 90
degrees apart. Replace balance shaft if either journal
is worn below the service limit specification. If worn
past the service limit, replace the balance shaft
assembly.
MEASUREMENT
Balance Shaft Diameter (MAG & PTO):
1.4939 - 1.4946" (37.946 - 37.962 mm)
Service Limit: 1.4921" (37.900 mm)
CRANKSHAFT REMOVAL / INSPECTION
1. Perform “Crankcase Disassembly / Inspection”
procedure.
2. Perform “Balance Shaft Removal / Inspection”
procedure.
3. For ease of assembly, mark each connecting rod and
end cap.
4. Loosen, remove and discard the four connecting rod
bolts
q
. Remove the end caps from the crankshaft.
5. Carefully lift the crankshaft
w
out of the crankcase.
6. Remove the cam chain
e
, PTO main seal
r
and oil
pump drive chain
t
from the crankshaft.
7. Inspect the auxiliary sprocket
y
and crankshaft gear
u
for broken or worn teeth.
8. If the crankshaft gear is damaged, the crankshaft
assembly must be replaced.
ENGINE / COOLING SYSTEM
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