Troubleshooting44PROBLEM CORRECTIVE ACTIONPOSSIBLE CAUSESEngine loses power (continued). 6. Vent hole in fuel cap isplugged.6. Clean or replace the fuel cap.7. Dirt in fuel filter. 7. Replace fuel filter.8. Dirt, water, or stale fuel is infuel system.8. Contact Authorized ServiceDealer.Engine over heats. 1. Engine load is excessive. 1. Shift into lower gear to reduceground speed.2. Oil level in crankcase is low. 2. Add oil to crankcase.3. Cooling fins and air passagesunder engine blower housingare plugged.3. Remove obstruction fromcooling fins and air passages.Abnormal vibration. 1. Cutting blade(s) is bent orunbalanced.1. Install new cutting blade(s).2. Blade mounting bolt is loose. 2. Tighten blade mounting bolt.3. Engine mounting bolts areloose.3. Tighten engine mountingbolts.4. Loose engine pulley, idlerpulley, or blade pulley.4. Tighten the appropriatepulley.5. Engine pulley is damaged. 5. Contact Authorized ServiceDealer.Blade(s) does not rotate. 1. Blade drive belt is worn, looseor broken.1. Install new blade drive belt.2. Blade drive belt is off pulley. 2. Install blade drive belt andcheck idler pulley and beltguides for correct position.Machine does not drive. 1. Traction belt is worn, loose orbroken.1. Contact Authorized ServiceDealer.2. Traction belt is off pulley. 2. Contact Authorized ServiceDealer.3. Transmission does not shift. 3. Contact Authorized ServiceDealer.Uneven cutting height. 1. Tire pressure is incorrect. 1. Set tire pressure.g g2. Mower is not level. 2. Level mower fromside-to-side and front-to-rear.3. Underside of mower is dirty. 3. Clean the underside of themower.