MTD 760-779, 760, 779 Changing the Deck Belt & PTO Belt, Changing the Transmission Drive Belts

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Maintaining

Your Lawn

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Figure 26

To change or replace the deck belt and PTO belt on your tractor, proceed as follows:

1.Lower the deck by moving the deck lift lever into the bottom notch on the right fender.

2.Remove the belt guards by removing the self-tapping screws that fasten them to the deck.

3.Remove the belt keeper rod from around the engine pulley.

4.Insert a 3/8”-drive ratchet wrench (set to loosen) into the square hole found in the idler bracket on the left side of the deck’s surface. See Figure 26.

5.Grasp the ratchet’s handle and pivot it toward the front of the tractor to relieve tension on the belt.

6.With belt tension relieved, carefully remove the belt from around the left-hand spindle pulley.

WARNING

Be sure to shut the engine off, remove ig- nition key, disconnect the spark plug wire(s) and ground against the engine to prevent unintended starting before removing the belt(s).

Avoid the possibility of a pinching injury. Do not place your fingers on the idler spring or between the belt and a pulley while removing the belt.

Changing the Deck Belt & PTO Belt

WARNING: Be sure to shut the engine off, remove ignition key, disconnect the spark plug wire(s) and ground against the engine to prevent unintended starting before removing the belt(s).

All belts on your tractor are subject to wear and should be replaced if any signs of wear are present.

IMPORTANT: The V-belts found on your tractor are specially designed to engage and disengage safely. A substitute (non-OEM) V-belt can be dangerous by not disengaging completely. For a proper working machine, use factory approved belts.

IMPORTANT: Carefully allow the ratchet to pivot rearward before removing it from the square hole.

WARNING: Avoid the possibility of a pinching injury. Do not place your fingers on the idler spring or between the belt and a pulley while removing the belt.

7.Remove the deck belt from around all pulleys, including the deck idler pulley.

8.Route the new belts as shown in and Figure 27 and 28.

9.Remount the belt guards removed earlier.

Changing the Transmission Drive Belts

NOTE: Several components must be removed and special tools (i.e. air/impact wrench) in order to change the tractor’s drive belts. See an authorized MTD Service Dealer to have your drive belts replaced or phone Customer Support as instructed on page 2 for information on ordering a Service Manual.

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Contents MTD LLC, P.O. BOX 361131 CLEVELAND, Ohio 01/06/2006Table of Contents Slope Gauge Replace gasoline cap and tighten securely This power machine to persons who read, understandUse only an approved gasoline container General Operation Do Not Never allow children or others in or on towed equip- mentService Remove the hex bolt and hex nut from the negative cable Attaching the Battery CablesGas and Oil Fill-up 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 ModeStopping the Engine Setting the Cutting HeightStarting 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 SeatLubrication Cleaning the Engine And DeckEngine To remove the cutting deck, proceed as follows Cutting Deck RemovalDeck Wash System Battery FuseFoot-pounds Cutting BladesBlades may be removed as follows 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
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