Troy-Bilt ZT50 Manuel D’Utilisation

RECEIVE INSTRUCTION — Entirely read this operator’s 

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manual. Learn to operate this machine SAFELY. Do not risk 

INJURY or DEATH. Allow only those who have become 

competent in its usage to operate this tractor.
Before starting the engine or beginning operation, be 

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familiar with the controls. The operator should be in the 

operator’s seat. The PTO switch must be in the disengaged 

position, the parking brake engaged, and the  RH and LH 

drive control levers moved fully outward in the neutral 

position.
Keep all shields in place. Keep away from moving parts.

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NO RIDERS! Keep all people and pets a safe distance away. 

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Look behind and down to both sides of the tractor before 

and while backing up.
DO NOT direct the mower discharge at people.

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Avoid slopes where possible. Never operate on slopes 

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greater than 15°. Slopes with a greater incline present 

dangerous operating conditions. Tractors can be rolled 

over.
Before leaving the operator’s seat: Shut off the PTO, move 

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the  RH and LH drive control levers fully outward in the 

neutral position, engage the parking brake, shut off the 

engine and remove the ignition key. Wait for all movement 

to stop before servicing or cleaning.
Operate the drive control levers smoothly and avoid 

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any sudden movements of the levers when starting and 

stopping. Keep a firm grip on the control levers.
Be careful when operating near roadways. Stop the tractor 

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motion and wait for vehicles to pass before operating 

along the road.
Do not operate the tractor with the mower deck removed. 

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Removal of the deck will change the balance of the tractor, 

and could contribute to a tractor rollover.
Avoid operation on traction surfaces that are unstable; use 

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extreme caution if the surface is slippery.
Slow down before turning and come to a complete stop 

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before any zero turn maneuver.
Do not stop the tractor or park the tractor over 

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combustible materials such as dry grass, leaves, debris, etc.
Do not fill the fuel tank when the engine is running or 

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while the engine is hot. Allow the engine several minutes 

to cool before refueling. Tighten the fuel cap securely.

Before you operate the tractor, study this manual carefully 

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to familiarize yourself with the operation of all the 

instruments and controls. It has been prepared to help you 

operate and maintain your tractor efficiently.
This engine is certified to operate only on clean, fresh, 

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unleaded regular gasoline. For best results, fill the fuel 

tank with only clean, fresh, unleaded gasoline with a pump 

sticker octane rating of 87 or higher. 
Unleaded gasoline is recommended because it leaves less 

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combustion chamber deposits and reduces harmful exhaust 

emissions. Leaded gasoline is not recommended and must 

not be used where exhaust emissions are regulated.
NOTE: Purchase gasoline in small quantities. Do not use 

gasoline left over from the previous season, to minimize 

gum deposits in the fuel system.
Gasohol (up to 10% ethyl alcohol, 90% unleaded gasoline 

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by volume) is an approved fuel. Other gasoline/alcohol 

blends are not approved.
Methyl Tertiary Butyl Ether (MTBE) and unleaded gasoline 

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blends (up to a maximum of 15% MTBE by volume) are 

approved fuels. Other gasoline/ether blends are not approved.
Check the engine oil level.

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Clean the air cleaner element if necessary.

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Check the tire inflation pressures.

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Adjust the seat for operator’s maximum comfort, visibility 

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and for maintaining complete control of the tractor.

This tractor is equipped with a safety interlock system for the 

protection of the operator. If the interlock system should ever 

malfunction, do not operate the tractor. Contact your authorized 

Troy-Bilt Dealer.

The safety interlock system prevents the engine from 

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cranking or starting unless the  RH and LH drive control 

levers are moved fully outward in the neutral position, the 

parking brake is engaged, and the PTO is disengaged.
To avoid sudden movement when disengaging the parking 

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brake, the safety interlock system will shut off the engine 

if the RH and/or LH drive control levers are moved to a 

position other than the fully out in the neutral position 

when the parking brake is engaged.
The safety interlock system will shut off the engine if the 

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operator leaves the seat before engaging the parking brake.
The safety interlock system will shut off the engine if the 

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operator leaves the seat with the PTO engaged, regardless 

of whether the parking brake is engaged. 
NOTE: The PTO switch must be moved to the “OFF” 

position to restart the engine.
The safety interlock system will shut off the PTO and the 

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mower blades will stop if both drive control levers are 

moved into the reverse position. The PTO will re-engage 

when one or both of the levers are moved back to the 

neutral or forward position.