Kohler 14RCA / 20RCA — Fuel Conversion from Natural Gas to LPG, 14RCA/RCAL
Installation · Fuel system
For the Kohler 14RCA / 20RCA, from the Kohler service manual.
Applies to: Kohler 14RCA, Kohler 20RCA, Kohler CH740 (14 kW models); CH1000 (20 kW models) engine, Kohler CH 740 engine, Kohler CH1000 engine
Before you start
- Explosive fuel vapors. Use extreme care when handling, storing, and using fuels.
Procedure
- Press the OFF button on the generator set controller.
- Disconnect the utility power to the generator.
- Disconnect the engine starting battery, negative lead first.
- Turn off and disconnect the fuel supply.
- Remove the fuel hose from the hose fitting on the top of the regulator.
- Use a straight-blade screwdriver to remove the NG orifice from the hose fitting.
- Insert the LPG orifice into the hose fitting and tighten until snug.
- Slide the hose onto the fitting and secure with the clamp.
- Disconnect ignition timing leads 65 and N3 for LPG.
- Connect and turn on the new fuel supply.
- Reconnect the engine starting battery leads, negative lead last.
- Reconnect the utility power to the generator.
- Start the generator set by pressing RUN.
- Check for leaks with a gas leak detector, run to check operation, and press OFF.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- NG orifice fitting is silver and stamped NG; LPG fitting is gold and stamped LPG
Full service-parts list: Kohler 14RCA →, Kohler 20RCA →
Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.