Troy-Bilt Automatic Lawn Tractor 사용자 설명서

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 If the cutting edge of the blade has already 

been sharpened to within 5/8" of the wind wing radius, 
or if any metal separation is present, replace the blades 
with new ones. See Figure 20.

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. 

 Use a torque wrench to tighten the blade 

spindle hex flange nut to between 70 foot-pounds and 
90 foot-pounds. 

Two fuses are installed in your tractor’s wiring harness 
to protect the tractor’s electrical system from damage 
caused by excessive amperage. 

If the electrical system does not function, or your 
tractor’s engine will not crank, first check to be certain 
that the fuse has not blown. 

One can be found under the hood mounted behind the 
top of the dash panel on the support bar. 
The other can be found under the seat mounted to the 
inside of the tractor frame next to the battery tray.

Always use a fuse with the

same amperage capacity for replacement.

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).

Avoid the possibility of a

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

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

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.

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

•

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

•

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

•

Grasp the rearmost portion of the PTO idler bracket 
and pivot it toward the discharge chute to relieve 
tension on the PTO belt. See Figure 21.

•

Remove the PTO belt from around the engine 
pulley (or electric PTO clutch) and from around the 
PTO idler pulley(s).

•

Grasp the deck idler pulley and pivot it toward the 
left to relieve tension on the deck belt.  Carefully 
allow the ratchet to pivot rearward before removing 
it from the square hole.

•

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

•

Route the new belts (deck belt first) as shown in 
Figure 21.

•

Remount the belt guards removed earlier.

•

Remove the belt keeper rod from around the engine 
pulley.

•

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 22.

•

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

•

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