MTD 760, 779, 760-779 warranty Cutting Blades, Blades may be removed as follows, Foot-pounds

Page 25

Cutting Blades

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 cut- ting blade(s) for sharpening or replacement. Protect your hands by using heavy gloves or a rag to grasp the cutting blade.

WARNING: Periodically inspect the blade spindles for cracks or damage, especially if you strike a foreign object. Replace immedi- ately if damaged.

The blades may be removed as follows.

1.Remove the deck from beneath the tractor, (refer to Cutting Deck Removal on page 23) then gently flip the deck over to expose its underside.

2.Place a block of wood between the center deck hous- ing baffle and the cutting blade to act as a stabilizer. See Figure 24.

3.Use a 15/16” wrench to remove the hex flange nut that secures the blade to the spindle assembly. See Figure 24.

4.To properly sharpen the cutting blades, remove equal amounts of metal from both ends of the blades along the cutting edges, parallel to the trailing edge, at a 25° to 30° angle.

IMPORTANT: If the cutting edge of the blade has already been sharpened to within 1 5/8” from the edge, or if any metal separation is present, replace the blades with new ones. See Figure 25.

•It is important that each cutting blade edge be ground equally to maintain proper blade balance.

•A poorly balanced blade will cause excessive vibration and may cause damage to the tractor and result in personal injury. The blade can be tested by balancing it on a round shaft screwdriver. Grind metal from the heavy side until it balances evenly.

Figure 24

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Figure 25

•When replacing the blade, be sure to install the blade with the side of the blade marked ‘‘Bottom’’ (or with a part number stamped in it) facing the ground when the mower is in the operating position.

IMPORTANT: Use a torque wrench to tighten the blade spindle hex flange nut to between 70 foot-pounds and 90

foot-pounds.

6

Maintaining

Your Lawn

Tractor

WARNING

Be sure to shut the engine off, remove ignition key, discon- nect the spark plug wire(s) and ground against the engine to prevent unintended starting before remov- ing the cutting blade(s) for sharpening or replacement. Protect your hands by using heavy gloves or a rag to grasp the cutting blade.

Periodically inspect the blade spindles for cracks or damage, especially if you strike a foreign object. Replace immediately if damaged.

25

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Contents 01/06/2006 MTD LLC, P.O. BOX 361131 CLEVELAND, OhioTable of Contents Slope Gauge Use only an approved gasoline container This power machine to persons who read, understandReplace gasoline cap and tighten securely General Operation Never allow children or others in or on towed equip- ment Do NotService Gas and Oil Fill-up Attaching the Battery CablesRemove the hex bolt and hex nut from the negative cable Attaching The Steering Wheel Shipping Brace RemovalQuick Adjustment Seat Standard Adjustment SeatKnob Adjustment Seat Attaching The SeatEquipped Identifying the Mulch Plug if soOperating Throttle Control Lever Ignition SwitchChoke Control Always disengageParking Brake Safety Interlock SwitchesClutch-Brake Pedal Shift LeverModels without Reverse Caution Mode Reverse Caution Mode If EquippedModels with Reverse Caution Mode To use the Reverse Caution ModeStarting the Engine Setting the Cutting HeightStopping the Engine Place shift lever in Neutral Restart engine Driving The TractorDriving On Slopes Using the Deck Lift LeverEngaging the Blades MowingMulching If Equipped HeadlightsLeveling the Deck Parking Brake AdjustmentFront To Rear Side to SideKnob Adjustment Seat if so equipped Seat AdjustmentQuick Adjust Seat If so equipped Standard SeatEngine Cleaning the Engine And DeckLubrication Deck Wash System Cutting Deck RemovalTo remove the cutting deck, proceed as follows Fuse BatteryBlades may be removed as follows Cutting BladesFoot-pounds Changing the Transmission Drive Belts Changing the Deck Belt & PTO BeltRemove the belt keeper rod from around the engine pulley Remount the belt guards removed earlierMaintaining Your Lawn Tractor Inch Two-stage Snow Thrower Rear Wheel Weight Kit38/42-inch Deck Mulch Kit Twin Bagger Grass Collector for 38/42-inch DecksYour Responsibility Restrict the use Safety LabelsPlug wires Spark plug wires looseFuel tank empty or stale fuel Choke not activatedToo wide Gap Dirty air cleaner Fins and blower housingSpark plugs gap too close High RPM Gap Idles poorlyPage Page Page MANUFACTURER’S Warranty Coverage MANUFACTURER’S Limited Warranty for
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