Snorkel SB85J - Manual (Page 29)

Chapter 6 – Controls
SB85J Fixed Axle – 0112975 23
Hold the joystick forward to retract the booms and back-
ward to extend the booms.
Engine/Emergency Power Switch
The engine/emergency power switch is spring returned
to the engine position for aerial platform engine opera-
tion.
Hold the switch in the emergency power position to oper-
ate aerial platform functions using the emergency power
system.
Note
The emergency power system is for lowering the platform
during an emergency and is not intended for normal ma-
chine operation.
If the engine is running, it will stop when the switch is
placed in the emergency power position.
Throttle Switch
The throttle switch is used to set the engine throttle speed
to either low or high idle.
Place the switch in the low position for normal machine
operation and in high to drive at maximum speed.
The engine has a three speed throttle operation from the
upper controls. Independent of the throttle switch, the
platform foot switch, when depressed, increases the en-
gine speed from low to mid-range.
High engine speed is obtained when the main boom is
stowed, the foot switch is depressed, the throttle switch
is in the high position, and the drive joystick is moved out
of neutral into the forward or reverse position.
The machine can be driven in mid-range engine speed
with the throttle switch place in the low position.
Horn Button
The horn button is on the right side of the upper control
panel. Press the button to sound the horn.
Figure 6.7 – Upper Control Panel Right Side
Steer Mode Switch
The steer mode switch is used to select between four
wheel coordinated steer, two wheel steer, and crab steer
modes (refer to Figure 6.6).
Figure 6.6 – Steer Modes
Note
The steering wheels are not self-centering. Set the steer-
ing wheels straight ahead after completing a turn and
before switching from one steer mode to another.
Place the switch in the two wheel, four wheel coordi-
nated, or crab steer mode position to achieve the desired
machine movement.
Jib Articulation Switch
The jib switch is used to raise or lower the jib. The switch
is spring returned to the center off position.
Hold the switch up to raise the jib. Hold the switch down
to lower the jib.
Platform Level Switch
The level switch is used to level the platform floor with
respect to the ground. The switch is spring returned to
the center off position.
Hold the switch up to tilt the platform floor upward or
away from the ground. Hold the switch down to tilt the
platform floor downward or toward the ground.
Platform Rotate Switch
The platform rotate switch is used to rotate the platform
relative to the end of the tip boom. The switch is spring
returned to the center off position.
Hold the switch to the right to rotate the turntable coun-
terclockwise. Hold the switch to the left to rotate the turn-
table clockwise.
Boom Extend/Retract Joystick
The boom extend/retract joystick is used to extend or
retract the booms. The joystick is spring returned to the
center off position.
Steer Modes
Crab
• Front and rear
wheels turn in
steer direction
Four Wheel
Coordinated
• Front wheels turn
in steer direction
• Rear wheels turn
in the opposite
direction
Two Wheel
• Front wheels turn
in steer direction
• Rear wheels do
not turn
Horn Button
Light Switch