Kohler APM402 Operation page 88

For KG40, KG45, KG50, KG60 (Koher Engine KG6208), use the following:
See Figure 35 and Figure 36.
Natural Gas Operation

Disconnect 78/78a and 70G/70R from the fuel valve.

Disconnect 49 and N17.

Connect 77/77a and 70H/70T to the fuel valve.
LPG Vapor Operation

Disconnect 77/77a and 70H/70T from the fuel valves.

Connect 78/78a and 70G/70R to the fuel valves.

Connect 49 and N17.
Auto Changeover Natural Gas/LPG Vapor Operation

Connect 78/78a and 70G/70R to LP Fuel Valve assembly.

Connect 77/77a and 70H/70T to NG fuel valve assembly.

Connect 49a to LFP2 normally closed terminal.

Connect N17 to LFP2 common terminal.
Note:
Auto changeover natural gas/LPG vapor is not available on the 48RCLB and 60RCLA.
Harness Natural Gas
QCON-14,
77/77a QCON-15
(NG fuel valve)
QCON-12,
70H/70T QCON-13
(NG fuel valve)
N17
49
49a
78/78a
70G/70R
63
N16
Figure 35 Gaseous Fuel Electrical Connections, KG40–KG60
88
LPG Vapor
not used
not used
not used 49, QCON-10
not used N17, QCON-9
not used not used
QCON- 17, QCON- 19
not used
QCON- 16, QCON- 18
not used
LFP1- NC, Optional alarm
LFP1- COM, Optional alarm
Auto Changeover
QCON-14,
QCON-15
(NG fuel valve)
QCON-12,
QCON-13
(NG fuel valve)
LFP2-COM
not used
LFP2-NC
(LPG fuel valve)
(LPG fuel valve)
TP-6694 9/20