Arctic Cat Sno Pro 120 2011, Service Manual

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3
ZJ101A
4. Apply 5-8 psi to the coolant system through the cool-
ant overflow tube and continue until the coolant
stops draining from the system.
FILLING/BLEEDING COOLING
SYSTEM
1. Remove the hood and the left-side and right-side
access panels; then remove the torx-head screws
securing the console.
0743-777
2. Move the console up and forward; then with the har-
ness connected, securely position the console on the
snowmobile.
3. On the non-turbo models, remove the headlight sup-
port bracket/heat shield.
4. On the turbo models, loosen the cap screws securing
the heat shield to the exhaust manifold/turbocharger;
then using a deep socket and hammer, tap the wash-
ers making sure that the washers are free from the
head of the cap screws. Remove the cap screws and
move the heat shield to access the bleed screw.
5. Loosen the bleed screw and add coolant into the
filler neck until coolant is visible at the bleed screw;
then tighten the bleed screw and add coolant to the
coolant reservoir Full-Cold line.
744-032A
6. Start the engine and allow it to run for five minutes.
7. With the engine cool, loosen the bleed screw and
allow the coolant level in the filler neck to drop; then
with the bleed screw loose, add coolant into the filler
neck until no air is visible or heard at the bleed
screw. Tighten the bleed screw and add coolant to the
reservoir if necessary.

NOTE: If the coolant level in the filler neck suddenly
drops when the bleed screw is loosened, an air-lock
occurred in the cylinder head. Add coolant to the
filler neck until full before starting the engine.
8. Start the engine and allow it to run for five minutes;
then shut the engine off and allow it to cool.
9. Repeat steps 7-8 at least two more times (more if
necessary) until no air is in the cooling system.
10. On the non-turbo models, install the headlight sup-
port bracket/heat shield.
11. On the turbo models, place the heat shield into posi-
tion and secure with the cap screws. Tighten the cap
screws to 96 in.-lb.

NOTE: Apply a film of anti-seize to the threads of
the heat shield cap screws before installing.
12. Position the console assembly on the headlight sup-
port bracket; then secure the console with the two
torx-head screws.
CAUTION
Be sure the cooling system is thoroughly filled and
bled using the following procedure.
CAUTION
The Filling/Bleeding Cooling System procedure must
be followed very closely and the cooling system must
be properly filled. If the system isn’t properly filled,
engine damage will occur.
CAUTION
Use care not to allow the console harness to come into
contact with the exhaust pipe during this procedure.
CAUTION
Make sure the washers are free from the heat shield
cap screws or damage to the heat shield will occur.
CAUTION
Running the engine with low coolant level can cause
severe engine damage.
CAUTION
Operating the snowmobile with air in the cooling sys-
tem will cause severe damage to the engine.
Manual
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