Troy-Bilt 77T Manuel D’Utilisation

NOTE: Check the tractor’s tire pressure before perform-
ing any deck leveling adjustments. Refer to 

Tires on 

page 20 for information regarding tire pressure.
Front To Rear
The front of the cutting deck is supported by a stabilizer 
bar that can adjusted to level the deck from front to rear. 
The front of the deck should be between 1/4-inch and 

3/8-inch lower than the rear of the deck. Adjust if neces-
sary as follows:
1.  With the tractor parked on a firm, level surface, place 

the deck lift lever in the top notch (highest position) 
and rotate the blade nearest the discharge chute so 
that it is parallel with the tractor.

2.  Measure the distance from the front of the blade tip to 

the ground and the rear of the blade tip to the ground. 
The first measurement taken should be between 
1/4” and 3/8” less than the second measurement. 
Determine the approximate distance necessary for 
proper adjustment and proceed, if necessary, to the 
next step.

3.  Locate the jam nut and lock nut on the front side of the 

stabilizer bracket. See Figure 10. After loosening the 
jam nut:

Tighten the lock nut to raise the front of the deck; 
Loosen the lock nut to lower the front of the deck.
4.  Retighten the jam nut loosened earlier when proper 

adjustment is achieved.

Side to Side
If the cutting deck appears to be mowing unevenly, a side 
to side adjustment can be performed. Adjust if necessary 
as follows:
1.  With the tractor parked on a firm, level surface, place 

the deck lift lever in the top notch (highest position) 
and rotate both blades so that they are perpendicular 
with the tractor.

2.  Measure the distance from the outside of the left blade 

tip to the ground and the distance from the outside of 
the right blade tip to the ground. Both measurements 
taken should be equal. If they’re not, proceed to the 
next step.

3.  Loosen, but do NOT remove, the hex cap screw on 

the left deck hanger bracket. See Figure 11.

4.  Balance the deck by using a wrench to turn the 

adjustment gear (found immediately behind the hex 
cap screw just loosened) clockwise/up or counter-
clockwise/down. The deck is properly balanced when 
both blade tip measurements taken earlier are equal.

5.  Retighten the hex cap screw on the left deck hanger 

bracket when proper adjustment is achieved.