TROUBLESHOOTING Troubleshooting - 53 IF CHECK Engine Vapor Locks Fuel tank vent plugged. Dirt in fuel filter. Cooling fins plugged. Loose hose connection at fuel filter or fuel pump. Engine Overheats Engine air intake screen plugged. Cooling fins plugged. Engine oil low or too high. Engine operated too long at a slow idle speed. Engine Will Not Idle Spark plug not gapped correctly. Faulty spark plug. Operator raising off the seat. Engine Knocks Stale or low octane fuel. Engine overloaded. Low engine speed. Oil level low. Engine Stops Or Misses When Operating On Hillsides Fuel tank less than half full of fuel. Operator raising off of the seat. Engine Backfires Faulty spark plug.
Operator raising off of the seat. Engine Loses Power Engine overheating. Too much oil in engine. Dirty air cleaner. Faulty spark plug. Travel speed is too fast for conditions. Improper fuel. Excessive Fuel Consumption Choke is not fully open. Black Exhaust Smoke Air filter is dirty or oil soaked. Engine Stops When REVERSE Foot Pedal Is Depressed And Attachment Is Engaged (Hydrostatic) Normal condition. (See Using Reverse Implement Option in the OPERATING section.) Engine Stops When Gear Shift Lever Is Moved To The R (REVERSE) Position and Attachment Is Engaged (Gear) Normal condition. (See Using Reverse Implement Option in the OPERATING section.)