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9850064 R03 - 2021 650 / 850 Matryx Trail Performance / Crossover Snowmobile Service Manual
© Copyright Polaris Inc.
6.17
5. Install the lower sprocket fastener
o
and beveled
washer
a
. Verify the beveled washer is installed
dome-side out. Torque fastener to specification.
TORQUE
Lower Sprocket Fastener:
29 ft-lbs (40 N·m)
6. Install the chain tensioner, seal, jam nut and adjuster
bolt. Rotate the jackshaft (driven clutch) counter-
clockwise (forward) to move all of the chain slack to
the tensioner side of the chaincase.
7. Tighten the tensioner adjuster bolt until there is 1/8 in
(3.175 mm) chain deflection on the backside of the
drive chain.
8. Verify the adjuster bolt seal is seated against the
chaincase. Torque jam nut to specification.
TORQUE
Drive Chain Tensioner Jam Nut:
21 ft-lbs (28 N·m)
9. Inspect the cover gasket. Replace if damaged. Verify
the gasket is installed in the cover groove as shown.
10.Install the cover making sure the cover evenly
engages the dowels
i
. Lightly tap on the cover with
a soft-faced hammer to seat it against the chaincase.
NOTICE
If the fender is secured to the chaincase housing,
remove the two screws. Removing the screws will allow
more room for the cover to rotate into place.
FINAL DRIVE / BRAKE SYSTEMS
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