Kohler — EFI Initial Starting/Priming Procedure
Operation · EFI fuel system
From a Kohler service manual covering: CV17, CV18, CV20, CV22, CV23, CV25, CV26, CV730, CV740, CV745. Check it applies to your exact model before use.
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Before you start
- EFI fuel system remains under high pressure even when the engine is stopped; relieve pressure before servicing.
Procedure
- Locate ECU and check part number; if 24 584 28 or higher it has built-in priming.
- Turn key switch to on/run; when fuel pump stops cycling (about one minute) system is primed, start engine.
- For plastic-cased ECUs below 24 584 28, cycle key switch off and on to restart pump until pump has cycled five times.
- Alternatively connect pressure gauge, depress and hold release button and crank until air is purged and fuel visible in discharge tube.
Tools required
- Fuel pressure tester (SPX KO3217-4) Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.