Replacing Oil Seal - Arctic Cat Sno Pro 120 Service Manual

REMOVING/DISASSEMBLING
 NOTE: To avoid a parts mix-up, only remove one
valve assembly at a time from the engine.
1. Remove the exhaust valve assembly from the engine.
2. Remove the retaining screw securing the exhaust
valve to the valve stopper.
3. Hold the valve stopper securely and pull the cable
back and up until it clears the top of the stopper; then
slowly release the cable and remove it from the valve
stopper.
Cleaning and Inspecting
1. Remove all carbon deposits with solvent and a soft
abrasive such as a Scotch-Brite pad.
2. Inspect all parts for nicks, burrs, or other signs of
unusual wear.

Replacing Oil Seal

1. Carefully pry the seal up from beneath taking care
not to damage the valve plate.
2. Install the new seal using an appropriate-sized seal
driving tool.
CM147
ASSEMBLING/INSTALLING
FC112
KEY
A. Exhaust Valve
B. Cover Gasket
C. Valve Plate
FC113
1. Slide the return spring over the end of the actuating
cable.
D. Oil Seal G. Stopper Pin
E. Gasket H. Return Spring
F. Stopper I. Valve Cover
FC116
3
FC117
FC111A
3-39