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Synchronizing Oil-Injection Pump CHECKING 1. With the ignition switch key in the OFF position, move the throttle lever to the full-open position. 2. Check the alignment of the mark on the pump housing and the mark on the control arm. If the Fig. 4-149 727-185C ADJUSTING 1. Loosen the jam nuts securing the cable adjuster. 2. Move the throttle lever to the full-open position. 3. Rotate the jam nuts in the proper direction until the marks align. 4. Lock the jam nuts to secure the adjustment. Bleeding Oil-Injection System Whenever bleeding the oil-injection system, use 1. Fill the oil reservoir with Arctic Cat 50:1 Injection Oil. 2. Place an absorbent towel below the oil bleed screw; then remove the bleed screw from the pump. Allow NOTE. To aid in bleeding the oil system, blow into the vent hose to force the oil toward the pump. The Fig. 4-150 727-185C 3. Using a shielded safety stand, raise the rear of the snowmobile. Engage the brake lever lock; then start 4. Using a stiff wire with a hooked end, pull the control arm upward to the full-open position. ! WARNING Keep hands and clothing away from all moving 5. Idle the engine until oil flowing to the top of the oil-delivery hoses is free of air bubbles. 6. When oil flows free of all air bubbles, shut the engine off and check for leakage. 7. Release the brake lever lock. ! CAUTION 4 4-67 |