Engine

IF	CHECK
Engine will not start or is hard to start.	Run/Off Switch in off position. Fuel shutoff valve closed (OFF). Improper fuel/fuel level. Stale fuel. Plugged fuel filter or fuel filter screen. Plugged air intake filter. Spark plug wire is loose or disconnected. Spark plug not gapped correctly. Choke not functioning - See your John Deere Dealer.
Engine will not low idle.	Carburetor problems - See your John Deere Dealer.
Engine runs rough.	Fuel shutoff valve partially closed. Plugged fuel filter or fuel filter screen. Plugged air intake filter. Fuel cap vent dirty. Stale or improper fuel/fuel level. Spark plug not gapped correctly. Replace spark plug. Choke not functioning - See your John Deere Dealer. Carburetor problems - See your John Deere Dealer.
Engine overheats.	Clean cooling fins. Low oil level. Plugged air intake filter.
Engine knocks.	Reduce load. Fuel is bad. Fill tank with fresh fuel, correct octane. Operate engine at FAST idle. Low oil level.
Engine lacks power.	Reduce load. Plugged air intake filter. Plugged fuel filter or fuel filter screen. Drain and fill tank with correct fuel. Clean cooling fins to help prevent overheating. Spark plug. Clean spark arrestor. Throttle lever travel.
Engine uses too much oil.	Find and correct oil leaks. Incorrect engine oil. Plugged air intake filter. Worn rings.
Engine backfires through muffler.	Carburetor problems - See your John Deere Dealer.