Crankshaft / Cam Chain / Sprocket Inspection; Crankcase / Bearing Inspection; Crankcase Oil Strainer Inspection - Polaris RANGER RZR 170 Service Manual

ENGINE
Crankshaft / Cam Chain / Sprocket
Inspection
1. Inspect the crankshaft main bearings and cam chain
sprocket for wear or damage.
NOTE: Due to extremely close tolerances and
minimal wear, the bearings must be inspected
visually, and by feel. Look for signs of discoloration,
scoring or galling. Turn the outer race of each
bearing. The bearings should turn smoothly and
quietly. The inner race of each bearing should fit
tightly in the crankshaft. The outer race should be
firm with minimal side to side movement and no
detectable up and down movement.
2. Replace the crankshaft if the components fail visual
inspection.
3. The connecting rod utilizes a roller bearing. Clearance
is minimal and cannot be measured. Visually inspect
bearing journal for scoring, damage or excessive
wear. Replace crankshaft if it fails visual inspection.
4. Check oil passages to make sure they are clear.
3.34
5. Remove cam chain. Inspect chain for wear or

Crankcase / Bearing Inspection

NOTE: Removal and installation of new seals is
recommended
disassembled.
1. Inspect the bearings in the crankcase.
NOTE: Due to extremely close tolerances and
minimal side wear, the bearing must be inspected
visually and by feel. Look for signs of discoloration,
scoring or galling. Turn the inner race of bearing.
The bearing should turn smoothly and quietly. The
outer race should fit tightly in the crankcase. The
inner race should be firm with minimal side to side
movement
movement.
2. To remove crankcase bearings, use a blind hole
NOTE: Bearings are damaged during the removal
procedure and should not be re-used.
3. Remove all traces of gasket material from the

Crankcase Oil Strainer Inspection

1. Remove drain plug.
2. Remove oil strainer and visually inspect for any
3. Replace oil strainer if it fails visual inspection.
9923983 - 2012-2013 RZR 170 Service Manual
© Copyright 2012 Polaris Sales Inc.
damage. Replace if worn excessively or as part of
any crankshaft repair.
Note: Install new chain as
a part of crankshaft repair.
anytime
and no detectable
bearing puller.
crankcase mating surfaces. Inspect the surfaces
closely for nicks, burrs or damage.
damage or obstructions in screen.
the crankcase is
up and down