Wacker Neuson Engine Starting System RD 12/RD 12A
wc_tx000746gb.fm 42
4.2 Checking the Wiring to the Starter Solenoid & Anti-backfire Solenoid
Prerequisites Fully-charged (approximately 12V) battery
Background Black wire #20 delivers 12VDC to the starter solenoid when the key is in the
START position. If this wire is broken or disconnected, the engine will not start.
Procedure Follow the procedure below to check the wiring to the starter solenoid.
1. Open the hood and locate the starter/starter solenoid
(a).
2. Check the condition/connection of black wire #20
(b) to the starter solenoid.
Is the wiring OK?
3. Check the condition and connection of the black/yellow wire to the anti-backfire
solenoid.
Is the wiring OK?
4. If the engine still won’t start but cranks, remove the anti-backfire solenoid
(c)
and clean the valve portion of it with carburetor cleaner. Re-install it and try to
start the engine.
The wiring to the starter solenoid and anti-backfire solenoid has now been
checked.
Yes ____ No ____
Continue Reconnect or repair red wire.
Yes ____ No ____
The wiring is OK. Reconnect or repair red wire.
wc_gr004129
a
b