The HOURMETER (37) is located in the center of the tachometer (29) on the
front console. It shows hours of engine operation.
HEATER SWITCH .
The HEATER switch (38) is located on the center of the front console. The
switch controls the cab heater located behind the operator's seat.
COLD START SWITCH.
The COLD START switch (39) is located on the left-center of the front
console. The switch is the pushbutton type and is used to inject shots of
ether into a cold engine during starting. The ignition switch must be in the
START position for cold start operation.
BOOM LIGHT SWITCH.
The BOOM LIGHT switch (40) is an ON-OFF toggle switch located on the left
side of the console. The switch controls two boom-mounted floodlights.
The TWO-BLOCK switch (41) is a two position toggle switch located on the
left-center of the front console. To override the two-block lever lockout
system, the TWO-BLOCK switch must be held in the OVERRIDE position.
REAR FLOODLIGHT SWITCH.
The REAR FLOODLIGHT switch (42) is an ON/OFF toggle switch located on
the left side of the console. The switch controls the floodlight mounted on the
The LIGHTS switch (43) is an MS51113 control located on the left side of the
console. The switch controls service, blackout drive, stop/tail, parking, and
front console lights. During operation under normal conditions (not blacked
out) this switch should be left in STOP LIGHT mode.