Wacker Neuson RD 12A Repair Manual page 47

RD 12/RD 12A
5. Check the voltage between terminal 87 (black wire #20) and ground. For this
test, the plug
shown to allow access to terminal 87.
Is battery voltage (approximately 12V) measured?
The neutral relay has now been checked.
wc_tx000746gb.fm
Wacker Neuson Engine Starting System
must be connected to the crank relay. Position the plug as
(b)
Yes ____
The neutral relay is OK.
47
No ____
The neutral relay has failed; replace it.