Kohler — Cylinder Leakdown Test
Testing & diagnosis
From a Kohler service manual covering: SV470, SV471, SV480, SV530, SV540, SV541, SV590, SV591, SV600, SV601, SV610, SV620. Check it applies to your exact model before use.
Applies to: Kohler SV530
Procedure
- Run engine for 3-5 minutes to warm it up.
- Remove spark plug(s) and air filter from engine.
- Rotate crankshaft until piston is at TDC of compression stroke. Hold engine in this position while testing.
- Install adapter into spark plug hole, but do not attach it to tester at this time.
- Turn regulator knob completely counterclockwise.
- Connect an air source of at least 50 psi to tester.
- Turn regulator knob clockwise until gauge needle is in yellow set area at low end of scale.
- Connect tester quick-connect to adapter hose. Firmly hold engine at TDC and gradually open tester valve.
- Note gauge reading and listen for escaping air at combustion air intake, exhaust outlet, and crankcase breather.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Air source minimum: 50 psi
Full service-parts list: Kohler SV530 →
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.