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ADJUSTING TPS NOTE: Before using the TPS adjustment tool, verify its battery condition. The battery used in the To check battery condition, use a digital volt/ohmmeter 1. Loosen the two screws securing the TPS. 2. Using TPS Adjustment Tool (p/n 0644-299), connect its wiring harness to the TPS. Connect the 3. Set the selector to the DC scale. Adjust the TPS to the specifications in the following chart with the 4. Squeeze the throttle to the wide-open position. If the reading is not as specified in the following chart, Fig. 5-9 0734-457 5. Connect the throttle cable to the throttle shaft. Adjust the throttle cable, if required, so that both the 6. Check the idle voltage using the TPS Adjustment Tool (p/n 0644-299). Adjust the idle voltage to the 7. Disconnect the adjustment tool harness from the TPS. Connect the snowmobile TPS harness to the NOTE: Before installing the TPS harness connector, apply dielectric grease to the connector REPLACING TPS 1. Disconnect the throttle cable from the throttle shaft. 2. Turn the idle speed screw counterclockwise until its end no longer contacts the throttle stop. The throttle 3. Disconnect the TPS wiring harness connector. Remove the two screws securing the TPS to the 4. Install the new TPS and secure with two screws, flat washers, and lock washers. FAIL-SAFE IGNITION TIMING Engines equipped with the 3-D ignition system have a NOTE: The engine will continue to operate this way until the TPS is replaced. WIDE-OPEN POSITION Engine Closed Position Idle Position Wide-Open Position 700 cc 0.025 V 0.325 V 3.920 V 800 cc 0.300 V 0.600 V 4.012 V 1000 cc 0.300 V 0.600 V 4.012 V 5-22 |