
North&Wing&S,LSA&Maintenance&Manual&
Model:&Sport&X2&582&
Issue 3.2
Printed: July 16 2017
Page 95
4.5.4
&
Testing and Replacing Master Switch
Skill level:
LSR-M, A&P
Tools:
Philips screw driver
Parts:
None
Task Description:
The Master switch provides power to the instruments and other accessories and is used to start
the engine. Unlike an automobile switch, it does NOT affect engine “ignition” in any way.
Any of the following symptoms may occur with a faulty Master switch:
1.
!
The EIS will not be operational when the switch is in the on position. If the engine is
not running, this may also be an indication of a dead battery.
2.
!
Other accessories, including the starter, may not be powered.
3.
!
The EIS and/or other accessories do not turn off when the Master switch is turned to
the OFF position.
If any of these symptoms occur, the Master switch most likely needs to be replaced using the
following procedure.
1.
!
Disconnect the negative terminal of the battery and secure it away from the battery
2.
!
For the Navajo model, remove the six screws holding the control panel in the
instrument housing, and rotate the panel forward to expose the back side of the Master
switch. For the Apache model with the full fairing, it may be possible to reach around
the instrument panel sides to the opening in the back side and “feel” around to remove
the switch. Otherwise, it will be necessary to remove the fairing enough to allow
access to the back side of the instrument panel.
3.
!
Remove and mark with tape which terminal each wire on the back side of the Master
switch was connected to.
4.
!
Holding the Master switch body firmly from the back side, unscrew the collar on the
front side of the panel and extract the switch from the pod from the back side.
5.
!
Replace with the new switch in reverse order.
4.5.5
&
Replacing Starter
Skill level:
LSR-M, A&P
Tools:
Metric Allen wrenches, box wrenches, sockets
Parts:
New Starter or ring gear
Task Description: