Service Bulletin

 

Model: ZRT 600 • 800 - ZR440

 

Subject: Ski Drag Modification

 

Date: December 1, 1994

 

CONDITION: The front end of the ski skag may catch on stationary objects which could result in a loss of control or A-arm and front end damage.

SOLUTION: If the snowmobile has already been set-up, tip the snowmobile on its side; then working on the upper ski, loosen the front skag lock nut until there is approximately 1/8 inch clearance between the bottom of the skag and the ski bottom.

Using either a propane torch or a gas welder with a small tip, preheat the front 3 inches of the skag. Move the torch back and forth on the skag heating this 3 inch area evenly and directing the flame onto the skag and not the ski.

Continue to heat the skag until the 3 inch area is starting to give off a slight smoke; then quickly tighten the front skag lock nut and draw the front of the skag into the plastic ski bottom until ½ of the diameter of the skag end is imbedded in the ski bottom.

CAUTION
The skag must be hot enough so it melts its way down into the ski bottom as the lock nut is tightened. If the skag isn’t melting the plastic as the lock nut is tightened, you must reheat the front 3 inch area of the skag to a hotter temperature (until the end of the skag can be drawn half way down into the ski bottom).

Using a large flat blade screwdriver, remove the excess melted plastic from around the end of the skag and allow to cool. Repeat the same procedure on the opposite side.

NOTE: If the skis have not been installed, perform this procedure with the ski held upside down in a vise.

WARRANTY: A group warranty claim of up to 10 serial numbers will be accepted. Write 95-07 in the failure code section of the warranty claim. A labor allowance of 0.4 hours will be paid per snowmobile.

NOTE: If any of the affected snowmobiles have been delivered, please contact each owner and have them bring their snowmobile in for this very important modification.

Arctco,Inc. PO Box 810, 600 South Brooks Ave, Thief River Falls, MN, 218-681-8558