Troy-Bilt 900 User Manual

Your tractor’s transmission is equipped with a hydrostatic 

relief valve for occasions when it is necessary to move the 

tractor manually. Opening this valve permits the fluid in the 

transmission to bypass its normal route, allowing the rear tires 

to “freewheel.” To open the hydrostatic relief valve, proceed as 

follows:
1. 

Locate the hydrostatic bypass rod in the rear of the tractor. 

See Figure 3-1.

2. 

Pull the hydrostatic bypass rod outward, then up, to lock it 

in place.

NOTE: The transmission will NOT engage when the hydrostatic 

bypass rod is pulled out. Return the rod to its normal position 

prior to operating the tractor.

Never attempt to move the tractor 

manually without first opening the hydrostatic relief 

valve. Doing so will result in serious damage to the 

tractor’s transmission. 

Make sure the garden tractor’s engine 

is off, set the parking brake and remove the ignition 

key before removing the shipping brace.

1. 

Locate the shipping brace, if present, and warning tag 

found on the right side of the cutting deck. See Figure 3-2.

2. 

While holding the discharge chute with your left hand, 

remove the shipping brace with your right hand by 

grasping it between your thumb and index finger and 

rotating it clockwise.

The shipping brace is used for 

packaging purposes only. Remove and discard the 

shipping brace before operating your garden 

tractor.

The mowing deck is capable of 

throwing objects. Operating the riding mower 

without the discharge cover in the proper operating 

position could result in serious personal injury and/

or property damage.

• 

One Garden Tractor

• 

One Oil Drain Tube

• 

One Deck Wash Hose Coupler

• 

One Garden Tractor Operator’s 

Manual

• 

One Engine Operator’s Manual

• 

One Product Registration Card