Troy-Bilt 77T Cutting Blades, Blade spindles for cracks or, Blades may be removed as follows

Page 21

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

Hex Nut

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 19) 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 18.

3.Use a 15/16” wrench to remove the hex flange nut that secures the blade to the spindle assembly. See Figure 18.

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 19.

•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.

•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.

Figure 18

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Figure 19

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.

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Contents Troy-Bilt LLC, P.O. BOX 361131 CLEVELAND, Ohio 01/2006 OPERATOR’S ManualTable of Contents Slope Gauge Your Responsibility ChildrenOperation General Operation Never allow children or others in or on towed equip- ment Do NotService Gas and Oil Fill-up Attaching the Battery CablesShipping Brace Removal Ignition key, and setAttaching The Steering Wheel Knob Adjustment SeatAttaching The Seat Tire PressureThrottle / Choke Control Operating Your Lawn TractorClutch-Brake Pedal Ignition SwitchShift Lever Deck Lift LeverSetting the Cutting Height Safety Interlock SwitchesPTO Blade Engage Lever Engaging the Parking BrakeDriving On Slopes Driving The TractorPlace shift lever in Neutral Restart engine Avoid sudden starts, ex-cessive speed and sudden stopsEngaging the Blades Using the Deck Lift LeverMowing Move the throttle control lever to the Fast rabbit positionMulching If Equipped HeadlightsLeveling the Deck Front To RearSide to Side Seat Adjustment Parking Brake AdjustmentCleaning the Engine And Deck LubricationEngine Cutting Deck Removal Deck Wash SystemTo remove the cutting deck, proceed as follows Cleaning BatteryBattery Failures ChargingBlade spindles for cracks or Cutting BladesForeign object. Replace immedi Ately if damaged Blades may be removed as followsChanging the Deck Belt Changing the Transmission Drive BeltsRemove the belt keeper rod from around the engine pulley Maintaining Your Lawn Tractor Off-Season Storage Attachments Attachments & AccessoriesYour 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 poorlyModel 77T Illustrated Parts List Models 77T 720-04061 Knob, 3/8-16 732-1184 738-0296738-04012A 1833 830 72712 2924 Illustrated Parts List For a proper working machine Belts are designed to engageTute non OEM V-belt can be 72 710-0599 Screw, 1/4-20 x 73 736-0222 Lock Washer, 1/4 Models Description Models Ref. Part No Models 77T 42 Deck Illustrated Parts List 2317 194 Illustrated Parts List For parts and/or Accessories Please call For parts and/or Accessories Please call For parts and/or Accessories Please call MANUFACTURER’S Warranty Coverage MANUFACTURER’S Limited Warranty for
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