Arctic Cat M 8000, Service Manual

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16. Remove the main harness wrap and disconnect the
six harness connectors. Secure the harness up and
out of the way.
17. Close-off the oil hose with a clamping device; then
remove the hose clamp and oil hose from the oil
pump.
PC139A
18. Remove the recoil starter from the engine. Secure it
out of the way.
19. Remove the cap screws securing the MAG-side
engine mount to the engine. Discard the cap screws.
20. Remove the spark plug caps from the spark plugs;
then disconnect the knock sensor and coolant tem-
perature sensor connectors. Remove the cylinder
head vent hose.
PC178B
21. Disconnect the lower coolant hose from the front
heat exchanger; then remove the coolant hose from
the heat exchanger at the rear of the engine.
PC141A
PC178A
22. Remove and discard the eleven screws securing the
PTO-side engine mounting plate. Account for the
spring washer between the rear mount and the tun-
nel.

NOTE: Before removing the cap screws, apply a
sufficient amount of heat to the cap screws to soften
the Loctite.
23. Remove the torx-head screw securing the front belt
guard to the skid plate; then remove the three cap
screws and carriage bolt nut securing the PTO-side
chassis support to the shock mount bracket and chas-
sis. Remove the chassis support and account for the
carriage bolt.
24. Remove the torx-head screws securing the access
panel to the center belly pan and chassis.
25. Remove the cap screw and two lock nuts securing
the engine support plate to the chassis; then lift the
engine out of the engine compartment.
 NOTE: If replacing the engine, make sure to remove
the engine support plate, exhaust manifold, three
coolant hoses, and oil injection control rod for instal-
lation on the new engine.
Installing

NOTE: If the engine was replaced, make sure to
install the existing engine support plate, exhaust man-
ifold, three coolant hoses, and oil injection control rod
on the new engine. Tighten the exhaust manifold nuts
to 17 ft-lb and the six engine support plate cap screws
to 25 ft-lb.
1. Carefully lower the engine into the engine compart-
ment.
2. Install the coolant hose to the heat exchanger at the
rear of the engine; then connect the lower coolant
hose to the front heat exchanger.
3. Install new MAG-side engine mount “patch-lock”
cap screws. Finger-tighten only at this time.
4. Install a new “patch-lock” cap screw and new lock
nuts securing the engine support plate to the chassis.
Finger-tighten only at this time.