STK OPERATOR’S MANUAL 9/4/18 Page 9 of 14
TRACK DRIVE CONTROLS
Warnin
g: Avoid operating the STK on hills or grades. If unavoidable keep the boom low and
stand uphill of STK. At 20° (36%) slope the engine oil sensor may shut the engine down.
Driving the STK:
The tracks are controlled by two track control levers, the left lever controls the left track and the right
lever controls the right track.
Forward:
When a lever is pushed forward, away from the operator, the corresponding track will crawl forward
with a speed that directly corresponds to how far the lever is pushed. To drive forward, push both
levers forward, away from the operator.
Reverse:
When a lever is pulled back, toward the operator, the corresponding track will crawl backward with a
speed that directly corresponds to how far the lever is pulled back. To drive in reverse, pull both
levers back, toward the operator.
Steering:
The STK will turn when either track crawls faster than the other. Wide turns can be made by pushing
both levers forwards at different angles. Sharp turns can be made by pushing one lever forward while
leaving the other in neutral. The sharpest turns are made by pushing one lever forward while pulling
the other lever back. The same is true for making turns in reverse.
If the left control lever is pushed further than the right the STK will turn to the right and if the right
control lever is pushed further than the left the STK will turn to the left.
Familiarize yourself with controlling the STK in an open area before attempting to control the STK in
a confined area such as driving off of or on to a trailer or through a gate.
Adjustable trenching control: (ATC) -
patent pending
The STK is equipped with Barreto Manufacturing’s adjustable trenching control system. To engage
the adjustable trenching controls, rotate the ATC knobs down so that when the control lever is pulled
back it is limited by the screw end of the knobs. Hold both control levers against the adjustable
trenching control, turning a knob clockwise will slow the corresponding track, while turning a knob
counterclockwise will speed up the corresponding track. This gives the operator the ability to fine
tune the controls in reverse on the fly, allowing for straight trenching and controlled turns.
To disengage the adjustable trenching control, rotate the knobs up so that the control levers can reach
their full rear movement.
BOOM CONTROLS
Boom controls:
The boom is controlled by a lever to the left side of the hand rest. Pull the lever back, toward the
operator to raise the boom, push the lever forward, away from the operator to lower the boom.
