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ed and clean to allow proper ventilation when the tractor is
in operation. The alternator charging system requires no
service other than periodically checking that all exposed
wiring and electrical connections on the tractor are clean,
tight, and in good condition.
Disconnect the rectifier/regulator plug when charging
the battery in the tractor or when using a booster battery
to start the engine. The rectifier/regulator is located behind
the engine, just below the battery.
Proper polarity is critical with an alternator equipped
chargi ng system.
Always disconnect the battery
ground cable (negative) before working on any part
of the electrical system.
Verify all components are
connected correctly before reconnecting the ground
cable (negative) or damage to alternator system com-
ponents will result.
Never run the engine if the battery is removed, or
if the battery is not connected to the charging system.
Serious damage to charging system components may
result.
Charging System Test
The overall charge system is tested by placing a DC
voltmeter across the battery terminals with the engine run-
ning at full throttle.
The reading should be 13.5 volts.
Ammeter Test
To test ammeter, turn ignition switch on and turn lights
on. Ammeter should show discharge. If not equipped with
lights, start the tractor and note initial ammeter reading,
quickly dropping off to zero.
I nterlock Switches
The C-Series safety interlock system incorporates two
switches. One switch is actuated by the clutch pedal on 8-
speed models and by the brake/return to neutral pedal on
automatic models. See Fig. 6-7 and Fig. 6-8.
Fig. 6-7 C-Series Clutch Pedal Interlock Switch
6-3
SECTION 6
-
Fig. 6-8 C-Series Automatic Foot Pedal Interlock Switch
The other safety switch is actuated by the PTO clutch
lever. If the starter fails to operate, check the position of
the switches in relation to their respective operating levers.
Be sure the switches are activated when the PTO clutch
lever is in the disengaged position and when the foot pedal
is depressed.
Both interlock switches must be closed in order to
start the engine. Check the switches by testing for contin-
uity. Check the PTO switch between the black wires, then
across the red wires.
Interlock Switch Locations and Replacement
The foot pedal switch in both the 8-speed and the auto-
matic models is located on the hood stand under the con-
trols access panel.
To remove or replace this switch on
either model, remove the controls cover plate to expose the
switch and remove side panel to remove switch nut.
The PTO switch in all C-Series is located to the right rear
of the battery. To remove or replace this switch, disconnect
the electrical connector, remove the battery, remove the
large switch nut and pull switch out. See Fig. 6-9.
Fig. 6-9 C-Series PTO Interlock Switch
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