Roller Installation; Spider Button Installation - Polaris 850 PRO-RMK 155 2020 Manual

ROLLER INSTALLATION

NOTICE
Use care to start the pin straight. Aluminum burrs could
pass through into the roller bushing causing it to bind
and stick. Also use care to make sure the roller remains
aligned when the pin is driven through. The roller
busing could be damaged causing premature wear and
roller failure.
1. Drive pin into the spider leg .100 - .125 in (0.25 - 0.32
cm) beyond the first land of the spider leg.
2. Install one washer on the portion of the pin that is
protruding from the spider leg.
3. Place the roller in the spider leg and center it on the
pin.
4. Place a second washer on the other side of the roller.
5. Place the spider on a vise.
6. Install the pin centering tool.
Pin Centering Tool:
2870401
7. Drive the roller pin through the second land of the
spider.
8. Repeat the process for the other two rollers.
9. Install new spider buttons on each leg using a soft-
faced hammer.
9850060 R02 - 2020-2021 850 AXYS™ Long Track Snowmobile Service Manual
© Copyright Polaris Inc.

SPIDER BUTTON INSTALLATION

1. A shim kit is available which contains an assortment
of shims.
Drive Clutch Shim Kit:
2200387
2. Measure the width of the moveable sheave towers
and record. Specification is 1.50 +/- .001 in (38.1
mm).
3. Measure the width of each corresponding spider leg
with the buttons installed and record. Specification is
1.496 +/- .001 in (37.99 mm).
4. Subtract the spider measurement from the tower
measurement. The clearance between the spider
buttons and the moveable sheave towers is .001 -
.002 in (0.025 - 0.05 mm).
5. Add shims beneath each trailing side spider button to
obtain the specified button-to-tower clearance when
assembled at each spider leg.
MEASUREMENT
Button-To-Tower Clearance:
.001 - .002 in (0.025 - 0.05 mm)
PVT SYSTEM
7
7.17