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Section 7 • Repair Procedures
Platform Controls
1-1
Joystick Controller
Maintaining the joystick controller at the proper
setting is essential to safe machine operation. The
joystick controller should operate smoothly and
provide proportional speed control through its
entire range of motion.
a
joystick controller
7 - 2
a
Genie Z-20/8N & Genie Z-20/8 & Genie Z-25/8
Joystick Controller Adjustments
Electrocution hazard. Contact with
electrically charged circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
Do not adjust the controller unless
the static battery supply voltage is
above 24V DC.
Individual trim potentiometers
(trimpots) are used to adjust
various output signals from the
drive controller. The trimpots will
be identified as the following:
• Max out trim potentiometer (max out trimpot)
• High range trim potentiometer (max out trimpot)
• Lo range trim potentiometer (lo range trimpot)
• Duel range trim potentiometer (lo range trimpot)
• Threshold trim potentiometer
(threshold trimpot)
• Ramp rate trim potentiometer
(ramp rate trimpot)
1 Block the non-steering wheels, and then center
a lifting jack under the drive chassis between
the steer tires.
2 Raise the drive chassis approximately 2 inches
(5 cm) off the ground and place blocks under
the chassis for support.
First Edition • Third Printing
Part No. 41314
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