Kohler 12RES — Power System Package Installation
Installation · generator set / transfer switch
For the Kohler 12RES, from the Kohler service manual.
Applies to: Kohler 12RES
Before you start
- Disconnect battery cables before working on generator set, negative lead first
- Never operate generator set inside a building
- Backfeed to utility system can cause severe injury or death; install transfer switch
Procedure
- Choose an outdoor location for the generator set per state/local codes.
- Obtain a building permit and mark underground utilities.
- Prepare mounting area with landscape fabric and compacted gravel.
- Clear combustible materials from area beyond exhaust end.
- Place generator set polymer base on compacted gravel.
- Ground the generator set per NEC and local codes.
- Connect fuel supply line to generator set fuel inlet using flexible fuel line.
- Apply pipe sealant to threaded fuel connections.
- Open manual fuel valves and leak test with soapy water.
- Choose indoor location and mount automatic transfer switch on rigid structure.
- Check transfer switch manual operation before connecting power.
- Install 60-amp double-pole circuit breaker in main distribution panel.
- Connect wiring kit leads between generator set, ATS, and load panel.
- Connect engine start leads to terminals ES3 and ES4 on ATS controller board.
- Check oil level, fuel supply, close breakers, and set master switch to AUTO.
Tools required
- Multimeter Amazon
- Frequency meter Amazon
- Torque wrench Amazon
- Wrenches Amazon
- Screwdrivers Amazon
- Socket wrenches or nut drivers Amazon
- Pliers Amazon
- Drill with bits and hole saw Amazon
- Panel punches Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Torque connections to 12 Nm (9 ft lbs)
- Torque engine start connector screws to 0.8 Nm (7 in lb)
Full service-parts list: Kohler 12RES →
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.