2010-2012 PRO-RIDE RUSH Switchback RMK Service Manual, Page 140Get this manual
Cleanfire Fuel Injection ENGINE PROTECTION FEATURES
Engine Temperature RPM Limit
The ECU will illuminate the instrument cluster engine hot LED when it determines the engine is overheatingThe ECU will flash the hot LED and enable RPM misfire if it determines continued engine operation will cause serious engine damageThe ECU makes this determination based on current engine coolant temp, engine RPM, and throttle position
Engine Overheating Troubleshooting
If the hot lamp is illuminated or flashing with the engine overheat RPM misfire enabled, reference the table belowCAUSE OF OVERHEAT SOLUTION
Riding in poor conditions
Ride snowmobile on good snow (loose, fresh, un-packed snow) Allow engine to coolRefill coolant surge bottle to COLD line Use 6040 (propylene glycol distilled water mixture Bleed cooling system Inspect components for damage, hose kinks, etcInspect thermostat for proper operation Inspect coolant flow
Engine Temperature Limit Modes