Kohler — Fuel System Test
Testing & diagnosis
From a Kohler service manual covering: SV710, SV715, SV720, SV725, SV730, SV735, SV740, SV810, SV820, SV830, SV840. Check it applies to your exact model before use.
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Procedure
- Check for fuel in combustion chamber: disconnect and ground spark plug leads, close choke, crank engine several times, remove spark plug and check for fuel at tip.
- Check for fuel flow from tank to fuel pump: remove fuel line from inlet fitting of fuel pump, hold line below bottom of tank, open shut-off valve and observe flow.
- Check operation of fuel pump: remove fuel line from inlet fitting of carburetor, crank engine several times and observe flow.
Specs & values
- Minimum fuel delivery rate must be 7.5 L/hr. (2 gal./hr.) with a pressure at 0.3 psi and a fuel lift of 24 in.
- A 1.3 L/hr. (0.34 gal./hr.) fuel rate must be maintained at 5 Hz.
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.