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cooling system bleeding advisory

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Advisory No: SAS313 Subject: Pre-Delivery Cooling System Bleeding

Affected Models:
All 2003 Firecat 500 cc and 700 cc Models

It has come to our attention that the cooling system on the affected
may develop an air bubble in the cooling system if the cooling system
not been properly bled. To ensure that an air bubble does not exist or
develop in the cooling system, Arctic Cat strongly advises all
dealers to
bleed the cooling system according to the procedure included in this

If you have sold an affected snowmobile, please contact the owner
this issue.

NOTE: Be sure to have the identified pre-delivery work completed
allowing an owner to take possession of the affected snowmobile.

NOTE: Be sure to inform the customer to 1.) use up one full tank of
pre-mix, 2.) drive slowly during the break-in period, 3.) monitor the
coolant level and coolant temperatures, 4.) make sure there isn't air
the oil line.

Bleeding the Cooling System

NOTE: Prior to bleeding the cooling system, make sure the following
pre-preparations are completed.

A. Make sure there is 100:1 mixed gas in the tank.
B. Make sure that there is no air bubble in the oil line.
C. Make sure the switch on the console is in the ethanol mode.
D. Use regular mode only when running non-ethanol or non-MTBE

1. Check the coolant level in the clear coolant bottle on the
side of the snowmobile.
2. If the coolant level is low, fill w/coolant.
3. Because the coolant fills slowly into the engine, it is necessary
wait for 10 minutes after filling the coolant tank to allow the
engine to
fill with coolant.
4. Recheck the coolant bottle level. If the level is low after 10
repeat steps 2 and 3.
5. Install the coolant cap to the "first" position.
6. Start the engine. Do not exceed 3000 RPM.
7. After the engine has run for about 3-5 minutes, the right-side
board heat exchanger should feel warm to the touch.
NOTE: This is a sign that the thermostat has opened.
8. Shut off the engine.
9. Tighten the coolant cap to the "second" position.
10. Tip the snowmobile onto the left-hand side (PTO-side) to allow
air to
move from the rear heat exchanger to the coolant tank.
11. Recheck the coolant level. If the coolant level is low, repeat
steps 2
and 3.
12. Install the coolant cap to the "first" position.
13. Place the snowmobile onto a safety stand.
14. Start the engine and run for 1 to 2 minutes. Do not exceed 5000
15. Monitor the heat exchanger temperature by touch.
16. Shut the engine off for 5 minutes.
17. Start the engine and repeat steps 7-16 an additional 2-3 times.

Thank you for your cooperation in this matter.


Product Service Department
Arctic Cat Inc.

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· Registered
164 Posts
I was kind of wondering about the part of raising the front end... If you look at the flow of the cooling system, the coolant enters the rear corner of the rear exchanger, then the coolant flows forward before turning around and heading back to the other corner hose. Since it goes "forward", and forward would be "up" if you had the front of the sled elevated, then how would air escape the front part of the rear exchanger if the front of the sled was elevated?

The tipping the sled onto the PTO side part of the deal (which I realize was always a part of the procedures described) is how the air gets out. For what it's worth, you can actually get a bit more air out than you might otherwise if you raise the rear of the sled until the vertical side of the tunnel (just below the seat) is parallel with the ground while the sled's on it's left side. Just be sure you have cardboard, or as I prefer, a shipping blanket on the ground to protect the sled from scratches. Another set of hands to help with steadying the sled while lifting doesn't hurt either.

There's my 2 cents.

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