Troy-Bilt ZT50 Manuel D’Utilisation

Battery Indicator
Illuminates and the battery voltage is displayed briefly when the 

ignition switch it turned to the “ON” position.
Illuminates to indicate the battery voltage has dropped below 

11.5 (+0.5/-1.0) volts. The battery voltage is also displayed on 

the hour meter. If this indicator and display come on during 

operation, check the battery and charging system for possible 

causes and/or contact your Troy-Bilt dealer.
Oil Pressure Indicator (If Engine So Equipped)
This warning lamp indicates low engine oil pressure. If the 

indicator comes on while the engine is running, stop the engine 

immediately and check for possible causes. Do not run the 

engine while this indicator is illuminated. Contact your Troy-Bilt 

dealer to have the tractor and engine inspected.
NOTE: The oil pressure indicator may illuminate when the 

ignition switch is in the ON position, but should turn off when 

the engine is started.
PTO Engaged Indicator
This indicator illuminates when the PTO switch is pulled upward 

in the “ENGAGED” position and the ignition switch is turned 

to the “START” position. Check this indicator if the engine will 

not crank with the ignition switch in the “START” position. If 

necessary, move the PTO switch to the “DISENGAGED” position.
Parking Brake Engaged Indicator
This indicator illuminates when the parking brake is in the 

DISENGAGED position and the ignition switch is turned to the 

“START” position. Check this indicator if the engine will not crank 

with the ignition switch in the “START” position. If necessary, 

move the parking brake to the ENGAGED position. 
This indicator also illuminates when the ignition switch is turned 

to the “START” position and the RH and/or LH drive control levers 

are in a position other than the fully out in neutral position. Move 

the control levers fully outward.

The throttle/choke control is located on the LH 

console to the left of the operator’s seat. When set 

in a given position, a uniform engine speed will be 

maintained.

Push the throttle/choke control handle 

• 

forward to increase the engine speed. The 

tractor is designed to operate with the 

throttle/choke control in the fast position 

(full throttle) when the tractor is being 

driven and the mower deck is engaged.
Pull the throttle/choke control handle 

• 

rearward to decrease the engine speed.
When starting the engine, push the control handle fully 

• 

forward into the “CHOKE” position. 
After starting and warming the engine, move the control 

• 

handle rearward until you feel it move past the choke 

detent.

FAST

SLOW

The parking brake engagement lever is located on the 

front/left of the seat box frame, and is used to engage the 

parking brake.
Pull the lever fully upward and to the left; then lower into 

the short “J” slot to engage the brake.
Pull the lever up out of the “J” slot and to the right; then 

lower completely to disengage the parking brake.
NOTE: If the LH and RH drive control levers are not fully 

opened out in the neutral position when engaging the 

parking brake, the engine will stop. The parking brake 

must be placed in the engaged position when starting the 

tractor engine.

The transmission oil expansion reservoir is connected by hoses to 

the RH and LH transmission assemblies, and is located beneath 

the seat box. The function of the reservoir is to hold the natural 

expansion of transmission oil that occurs as the transmission 

warms up during operation. DO NOT FILL THE RESERVOIR. 
Under normal operating conditions, no oil should be added 

to the reservoir. The COLD oil level should be no higher than 

approximately 1⁄4” (the “Full Cold” mark) above the bottom of the 

reservoir.
NOTE: Prior to the initial operation of the tractor, the oil level in 

the reservoir may be slightly higher than the maximum due to air 

in the oil lines. Operation of the tractor will eventually purge the 

air from the lines and the oil level will settle to the maximum.