The safety interlock system will shut off the engine if the 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 mower blades will stop if both drive con- trol 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.

STARTING THE ENGINE

WARNING: For personal safety, the operator must be sitting in the tractor seat when starting the engine.

WARNING: This unit is equipped with a safety interlock system designed for the protection of the operator. Do not oper- ate the tractor if any part of the interlock system is malfunctioning. Periodically check the functions of the interlock sys- tem for proper operation.

Move the RH and LH drive control levers fully outward in the neutral position. Refer to Figure 9.

Operator must be sitting in the tractor seat.

Engage the parking brake. Refer to Figure 9.

Make certain the PTO switch is in the disen- gaged (down) position. Refer to Figure 9.

Model ZT42 ONLY

1.Move the throttle control lever fully forward into the "CHOKE" position. NOTE: If the engine is warmed up, it may not be necessary to place the throttle control in the choke position.

2.Turn the ignition key clockwise to the “START” position and release it as soon as the engine starts; however, do not crank the engine con- tinuously for more than 5 seconds at a time. If the engine does not start within this time, turn the key to “OFF” and wait a minute. Try again after waiting.

3.After the engine starts, gradually pull the throttle control lever rearward past the choke detent position to the FAST position. Do not use the choke to enrich the fuel mixture, except as necessary to start the engine.

Model ZT50 ONLY

1.Pull the choke control knob upward to the full choke position. NOTE: If the engine is warmed up, it may not be necessary to choke the engine.

2.Move the throttle control lever fully forward to the "fast" position.

LH Control Lever

 

 

 

 

 

 

 

 

RH Control Lever

Out in Neutral

 

 

 

 

Parking Brake

 

 

 

 

Out in Neutral

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engaged

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ZT50 - Pull Choke

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ZT42 - Move Throttle

PTO Switch in Down

Control to Choke

(Disengaged) Position

ZT50 - Move Throttle

 

Control to "FAST"

 

Figure 9

3.Turn the ignition key clockwise to the “START” position and release it as soon as the engine starts; however, do not crank the engine continuously for more than 5 seconds at a time. If the engine does not start within this time, turn the key to “OFF” and wait a minute to allow the engine’s starter motor to cool. Try again after waiting.

4.As the engine warms up, gradually push the choke knob downward to open the choke. Do not use the choke to enrich the fuel mixture, except as necessary to start the engine.

Allow the engine to run for a few minutes at mid throttle before putting the engine under load.

Observe the hour meter/indicator panel. If the battery indicator light comes on, immediately stop the engine. Have the tractor inspected by your White Outdoor dealer.

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MTD ZT 50, ZT 42 manual Starting the Engine, Model ZT42 only, Model ZT50 only

ZT 42, ZT 50 specifications

The MTD ZT 42 and ZT 50 are part of MTD's impressive line of zero-turn lawn mowers, crafted to provide efficient and effective mowing solutions for both residential and commercial applications. With their robust design and advanced features, they cater to users seeking performance, comfort, and reliability.

The MTD ZT 42 features a 42-inch cutting deck, while the ZT 50 boasts a larger 50-inch cutting deck. This difference in size allows users to choose the model that best fits their mowing needs, whether they are managing a small residential yard or larger commercial properties. Both models are designed with efficiency in mind, enabling users to navigate tight spaces and maneuver around obstacles with ease, thanks to their zero-turn radius capabilities.

One of the standout features of both mowers is their powerful engine. The ZT 42 is equipped with a reliable 18 HP engine, while the ZT 50 features a more robust 24 HP engine. These engines provide ample power, ensuring that the mowers can tackle thick grass and uneven terrain without compromising performance.

In terms of comfort, both models come with ergonomic seating and user-friendly controls. The plush, high-back seats offer superior support during extended mowing sessions, reducing fatigue. The intuitive controls are designed for ease of use, allowing operators of all experience levels to handle the machines effortlessly.

The cutting technology in the MTD ZT series is another highlight. Both models include a fabricated steel deck that is designed for durability and longevity. The cutting height can be easily adjusted, offering users the flexibility to achieve the desired grass length. The precision cutting blades ensure a clean cut, promoting a healthy lawn.

Furthermore, both mowers are equipped with enhanced safety features. The automatic braking system engages whenever the operator leaves the seat, preventing unintended movement. This feature, combined with responsive steering and fast speeds, ensures that the mowers are not only efficient but also safe to use.

Overall, the MTD ZT 42 and ZT 50 embody a combination of power, precision, and comfort. With their advanced technologies and robust features, they serve as excellent choices for anyone looking to maintain a pristine lawn with minimal effort. Their reliability and performance make them appealing options in the zero-turn mower market, attracting homeowners and landscape professionals alike.