MTD 760-779 Fuel tank empty or stale fuel, Choke not activated, Equipped or place the throttle

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9

Trouble

Shooting

For repairs beyond the minor adjust- ments listed here, contact an authorized service dealer.

Problem		Cause		Remedy
Engine fails to start	1.	PTO engaged.	1.	Place PTO knob (or lever) in
				disengaged (OFF) position.
	2.	Spark plug wire(s) disconnected.	2.	Connect wire(s) to spark plug(s).
	2.	Spark plug wire(s) disconnected.	3.	Fill tank with clean, fresh gasoline.
	3.	Fuel tank empty or stale fuel.	3.	Fill tank with clean, fresh gasoline.
	3.	Fuel tank empty or stale fuel.	4.	Pull out the CHOKE control (if so
	4.	Choke not activated.	4.	Pull out the CHOKE control (if so
	4.	Choke not activated.		equipped) or place the throttle
				equipped) or place the throttle
				control in CHOKE position.
	5.	Faulty spark plug.	5.	Clean, adjust gap, or replace.
			5.	Clean, adjust gap, or replace.
	6.	Blocked fuel line.	6.	Clean fuel line or replace fuel filter,
			6.	Clean fuel line or replace fuel filter,
	7.	Engine flooded.		if so equipped.
			7.	Crank engine with throttle in FAST
				position.
	8.	Parking brake not engaged.	8.	Engage parking brake.
	8.	Parking brake not engaged.
	9.	Throttle control lever not in correct	9.	Place throttle lever to FAST
	9.	Throttle control lever not in correct		position.
		starting position.		position.
		starting position.
Engine runs erratic	1.	Unit running with CHOKE applied.	1.	Push CHOKE control (if so
				equipped) in, or move the throttle
	2.	Spark plug wire(s) loose.		control out of the CHOKE position.
	2.	Spark plug wire(s) loose.	2.	Connect and tighten spark
			2.	Connect and tighten spark
				plug wire(s).
	3.	Blocked fuel line or stale fuel.	3.	Clean fuel line; fill tank with clean,
	3.	Blocked fuel line or stale fuel.		fresh (less than 30 days old)
				fresh (less than 30 days old)
				gasoline. Replace fuel filter, if so
				equipped.
	4.	Vent in gas cap plugged.	4.	Clear vent or replace if damaged.
	5.	Water or dirt in fuel system.	5.	Drain fuel tank. Refill with
				fresh fuel.
	6.	Dirty air cleaner.	6.	Replace air cleaner cartridge/ele-
				ment or clean pre-cleaner, if so
				equipped.

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Contents MTD LLC, P.O. BOX 361131 CLEVELAND, Ohio 01/06/2006Table of Contents Slope Gauge This power machine to persons who read, understand Use only an approved gasoline containerReplace gasoline cap and tighten securely General Operation Do Not Never allow children or others in or on towed equip- mentService Attaching the Battery Cables Gas and Oil Fill-upRemove the hex bolt and hex nut from the negative cable Shipping Brace Removal Attaching The Steering WheelKnob Adjustment Seat Standard Adjustment SeatQuick Adjustment Seat Attaching The SeatIdentifying the Mulch Plug if so EquippedOperating Choke Control Ignition SwitchThrottle Control Lever Always disengageClutch-Brake Pedal Safety Interlock SwitchesParking Brake Shift LeverModels with Reverse Caution Mode Reverse Caution Mode If EquippedModels without Reverse Caution Mode To use the Reverse Caution ModeSetting the Cutting Height Starting the EngineStopping the Engine Driving The Tractor Place shift lever in Neutral Restart engineEngaging the Blades Using the Deck Lift LeverDriving On Slopes MowingHeadlights Mulching If EquippedFront To Rear Parking Brake AdjustmentLeveling the Deck Side to SideQuick Adjust Seat If so equipped Seat AdjustmentKnob Adjustment Seat if so equipped Standard SeatCleaning the Engine And Deck EngineLubrication Cutting Deck Removal Deck Wash SystemTo remove the cutting deck, proceed as follows Battery FuseCutting Blades Blades may be removed as followsFoot-pounds Remove the belt keeper rod from around the engine pulley Changing the Deck Belt & PTO BeltChanging the Transmission Drive Belts Remount the belt guards removed earlierMaintaining Your Lawn Tractor 38/42-inch Deck Mulch Kit Rear Wheel Weight KitInch Two-stage Snow Thrower Twin Bagger Grass Collector for 38/42-inch DecksSafety Labels Your Responsibility Restrict the useFuel tank empty or stale fuel Spark plug wires loosePlug wires Choke not activatedSpark plugs gap too close Fins and blower housingToo wide Gap Dirty air cleaner High RPM Gap Idles poorlyPage Page Page MANUFACTURER’S Warranty Coverage MANUFACTURER’S Limited Warranty for