Troy-Bilt TB2450 Manuel D’Utilisation

Shut the engine off and remove 

ignition key before removing the cutting blade(s) for 

sharpening or replacement. Protect your hands by 

using heavy gloves when grasping the blade

Periodically inspect the blade and/or 

spindle for cracks or damage, especially after  you’ve 

struck a foreign object. Do not operate the machine 

until  damaged components are replaced.

To remove the blades, proceed as follows.

Remove the deck from beneath the tractor, (refer to 

1. 

Cutting Deck Removal earlier in this section) then gently 

flip the deck over to expose its underside.
Place a block of wood between the center deck housing 

2. 

baffle and the cutting blade to act as a stabilizer. 

See Fig. 7-6.
Remove the flange lock nut that secures the blade to the 

3. 

spindle assembly. See Fig. 7-6.

To properly sharpen the cutting blades, remove equal 

4. 

amounts of metal from both ends of the blades along the 

cutting edges, parallel to the trailing edge, at a 25° to 30° 

angle. Always grind each cutting blade edge equally to 

maintain proper blade balance. See Fig. 7-7.

If the cutting edge of the blade has 

previously been sharpened, or if any metal 

separation is present, replace the blades with new 

ones.

A poorly balanced blade will cause 

excessive vibration, may damage to the tractor and/

or result in personal injury.

Test the blade’s balance using a blade balancer. Grind 

5. 

metal from the heavy side until it balances evenly.

NOTE: 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.

Use a torque wrench to tighten the 

blade spindle hex flange nut to between 70 lbs-ft 

and 90 lbs-ft.