Kubota B1830 Workshop Manual page 451

B1830,B2230,B2530,B3030, WSM
3) Main Switch Key at "PREHEAT" Position
1. Set and hold the main switch key at the PREHEAT position.
2. Measure the resistance with an ohmmeter across the B terminal
and the 19 terminal, and measure the resistance across the B
terminal and the AC terminal.
3. If 0 Ω is not indicated, these contacts of the main switch are
faulty.
B terminal – 19 terminal
Resistance
B terminal – AC terminal
B: Battery Terminal
AC: AC Terminal
4) Main Switch Key at "START" Position
1. Set and hold the main switch key at the START position.
2. Measure the resistance with an ohmmeter across the B terminal
and the 19 terminal, across the B terminal an the 50 terminal,
and across the B terminal and the AC terminal.
3. If 0 Ω is not indicated, these contacts of the main switch are
faulty.
B terminal – 19 terminal
Resistance B terminal – 50 terminal
B terminal – AC terminal
B: Battery Terminal
AC: AC Terminal
9-S12
ELECTRICAL SYSTEM
0 Ω
19: G Terminal
50: ST Terminal
9Y1210003ELS0014US0
0 Ω
19: G Terminal
50: ST Terminal
9Y1210003ELS0015US0
KiSC issued 05, 2012 A