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V1200-B Kubota Engine Engine

The V1200-B Kubota is an engine. It powers generator sets from Cummins/Onan, including the DK.

Also known as: V1200-B Kubota

Engine specifications

Generator sets powered by this engine

1

Common problems

3
  • Engine starts but stops after running several seconds.
    Fix: Check for a possible fault condition. If none, check fault monitors S1 through S4 and fault breaker CB12 for improper wiring. Is a fault condition indicated by fault breaker CB12 on control panel? No: Check for closing of S6 power latch switch. If okay, replace engine monitor PC board. Does latching relay A11-K12 energize and contacts close when generator set comes up to operating speed? Yes: Check all B+ wiring for shorts to ground. Does DC control breaker trip after generator set is started?
  • Engine does not crank.
    Fix: Check battery cables for clean tight connections (refer Checkout [BI). Check B1 starter solenoid and motor-if bad, repair or replace. Jumper battery cable B+ connection to B1 starter salenoid terminal. Does engine crank? Yes: Check B+ wiring to S11. and between S11 and K11. Check NC contacts of A1-K15 and K16 Replace if bad. With S11 in Start position, is battery voltage present between K11 terminal S and ground?
  • Engine cranks but does not start.
    Fix: Check fuel system: fuel tank level, shut-off valves, fuel lines and connections, fuel filters, fuel pump and injection pump. Okay? No: Is K1 fuel solenoid and E5 fuel pump energize when S11 is in Start position? No: Is battery B+ applied to glow plug heaters when Preheat Switch is closed? Yes: Check B+ circuit to K14 coil. Test relay K14 per Checkout [E]. Test K1 fuel solenoid per Checkout [F]. No: Incorrect fuel? See Operator’s Manual recommendations. K13 per Checkouts [GI and [E]. Check heater wiring.

Compiled from service & troubleshooting documentation across every generator set that uses the V1200-B Kubota.

Common questions

Which generators use the V1200-B Kubota engine?

The V1200-B Kubota powers 1 generator set(s), including Cummins/Onan DK.

What is a common problem with the V1200-B Kubota engine?

A commonly reported issue on generators using the V1200-B Kubota is: Engine starts but stops after running several seconds.. Fix: Check for a possible fault condition. If none, check fault monitors S1 through S4 and fault breaker CB12 for improper wiring. Is a fault condition indicated by fault breaker CB12 on control panel? No: Check for closing of S6 power latch switch. If okay, replace engine monitor PC board. Does latching relay A11-K12 energize and contacts close when generator set comes up to operating speed? Yes: Check all B+ wiring for shorts to ground. Does DC control breaker trip after generator set is started?.