Columbia RZT S Series, Operator'S Manual

14

S

ection

 4— c

ontrolS

 & F

eatureS

Throttle Control

The throttle control is located on the RH console to the 

left of the hour meter/indicator panel. When set in a given 

position, a uniform engine speed will be maintained.
Push the throttle control handle forward to increase the 

engine speed. The tractor is designed to operate with the 

throttle control in the fast position (full throttle) when the 

tractor is being driven and the mower deck is engaged.
Pull the throttle control handle rearward to decrease the 

engine speed.

Choke Control (If so equipped)

The choke control is located on the RH console to 

the right of the hour meter/indicator panel .The 

choke control determines the position of the engine 

choke. Pull the knob out to choke the engine; push 

the knob in to open the choke.

Throttle/Choke Control (If so equipped)

The throttle/choke control is located on the RH console 

to the left of the hour meter/indicator panel. 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.

Parking Brake/ 

Cruise Control Lock Pedal

The parking brake/cruise control lock pedal is 

located at the base of the steering column. It 

is used to engage the parking brake when the 

tractor is at rest. Engaging the lever while the 

tractor is in motion allows the tractor to remain 

at a constant ground speed without applying 

pressure to the forward drive pedal. Refer to 

the Operation section of this manual for detailed instructions 

regarding the parking brake as well as the cruise control feature.

NOTE: 

Cruise control can NOT be engaged at the tractor’s 

fastest ground speed. If the operator should attempt to do so, 

the tractor will automatically decelerate to the fastest optimal 

mowing ground speed 

NOTE: 

The parking brake must be set if the operator leaves the 

seat with the engine running or the engine will automatically 

shut off.

FAST

SLOW

FAST

SLOW

PARK BRAKE/ 

CRUISE CTRL.

LOCK PEDAL

I2374

6

WARNING! 

Never leave a running machine 

unattended. Always disengage PTO, set parking 

brake, stop engine and remove key to prevent 

unintended starting.

Forward Drive Pedal

The forward drive pedal is located on the right side 

of the tractor, along the running board. Press the 

forward drive pedal forward to cause the tractor to 

travel forward. Ground speed is also controlled with 

the forward drive pedal. The further forward the 

pedal is pivoted, the faster the tractor will travel. The 

pedal will return to its original position when it’s not 

pressed.

Reverse Pedal

The reverse drive pedal is located on the right side of 

the tractor along the running board.  Ground speed 

is also controlled with the reverse drive pedal. The 

further downward the pedal is pivoted, the faster the 

tractor will travel. The pedal will return to its original 

position when it’s not pressed.  

Transmission Bypass Rods

The transmission bypass rods (one for each the RH and LH 

transmission) are located on the rear of the tractor, just inside 

each rear wheel.
When engaged, the two rods open a bypass within the  

hydrostatic transmissions, which allows the tractor to be pushed 

short distances by hand. Refer to the Assembly & Set-Up section 

for instructions on using the bypass feature.

CAUTION:  

Never tow your tractor. Towing the 

tractor with the rear wheels on the ground may 

cause severe damage to the transmissions. 

Cup Holder

The cup holder is located on the RH console to the right of the 

operator’s seat. 

Storage Tray

The storage tray is located at the rear of the RH console.

Seat Adjustment Lever

The seat adjustment lever is located below the left side of the 

seat. The lever allows for adjustment of the fore to aft position of 

the operator’s seat. Refer to the Assembly & Set-Up section for 

instructions on adjusting the seat position.