Cub Cadet TANK S Series: Electrical System User Manual
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PRIMARY COMPONENTS: Cont.
IGNITION SWITCH: Pole Contact per Key Position.
OFF
– “G” Green is Ground + “M”, Yellow Wire the Magneto. + “R” Accessory.
Are Closed Circuits.
Engine Magneto is grounded and will not produce spark to spark plugs.
“B” Red Positive is isolated. Not feeding other circuits.
ON
– “B” Red Positive from Battery to “L” Red Wire to feed circuits & “R” Positive to Acc.
Positive Current is sent to components as PTO switch, relay, seat, and engine harness.
Magneto is no longer grounded at key switch but is still depending on safety switches to
allow the engine to produce spark to spark plugs.
“S” Orange Wire has no current.
START
– “B” Red Positive from Battery + “S” Orange Wire to Engine Starter Solenoid + “L” Red
to feed circuits.
Positive current is routed thru the orange wire to activate the engine starter solenoid.
The complete circuit is dependent on the safety switch system in order to activate the
starter.
Positive Current is sent to components as PTO switch, relay, seat, and engine harness.
Magneto is no longer grounded at key switch but is still dependent on safety switches
to allow the engine to produce spark to spark plugs.
IGNITION SWITCH: 6 pole, key activated.
View From POLE Side
Pole “S” , + Orange Wire, Starter Solenoid.
Pole “B” , + Red From
Battery.
Pole “M”, - Yellow Wire, Engine Magneto.
Pole “R”, + Accessory.
Pole “L”, + Red Wire, + Line to Components.
Pole “G” , - Green Wire
from Eng.
RELAY SWITCH:
This type of switch is activated by current introduction. In our system,
it’s used to open or close a
circuit, (positive or negative), transfer current or to stabilize amperage to protect related
components.
In the TANK-S harness, the relay feeds a ground from 2 yellow leads to the engine magneto.
Engine will not start with yellow magneto circuit grounded. When the operator sits in the seat the
positive circuit is closed and current is sent to the relay to open the yellow wire magneto ground
circuit.
View From Contact End
(87) Not used in MMZ circuit. Open when no
current present. Closed to circuit (30) with
current.
(86) RED (+) Current From
Seat Switch
(85) GREEN (-) Because of coil, closed to (86 +).
(30) Ground to Magneto
(87a) Yellow/White. Closed circuit to (30) when
no current present. Open when current present
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