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M. Throttle Control
The throttle 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.
Figure 8
• Push the throttle control handle forward to in-
crease the engine speed. The tractor is designed
to operate with the control handle in the fast
position (full throttle) when the tractor is driven
and the mower deck is engaged.
• Pull the throttle control handle rearward to de-
crease the engine speed.
• Model ZT42 ONLY — When starting the engine,
push the control handle fully forward into the
"CHOKE" position. See Figure 8. After starting
and warming the engine, move the control handle
rearward until you feel it move past the choke
detent.
N. Choke Control - Model ZT50 ONLY
The choke knob controls the position of the engine
choke. Pull the knob out to choke the engine; push the
knob in to open the choke.
O. Parking Brake Engagement Lever
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 and
lower into the "J" slot to engage the parking
brake.
• Pull the lever up out of the "J" slot and to the
right; then lower completely to disengage the
parking brake.
IMPORTANT: 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.
This symbol indicates the
This symbol indicates the
fast position.
slow position.
CHOKE
This symbol indicates the
choke position.
ZT42
This symbol indicates the
This symbol indicates the
fast position.
slow position.
ZT50