Kohler — Crankcase Vacuum Test (Vacuum/Pressure Gauge)
Testing & diagnosis · Crankcase Breather
From a Kohler service manual covering: CV682, CV732, CV742, CV752. Check it applies to your exact model before use.
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Before you start
- Rotating Parts can cause severe injury. Stay away while engine is in operation.
Procedure
- Remove dipstick or oil fill plug/cap.
- Install adapter into oil fill/dipstick tube opening or directly into engine if a tube is not used. Insert barbed gauge fitting into hole in stopper.
- Run engine and observe gauge reading; crankcase vacuum should be a minimum of 10.2 cm (4 in.) of water.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Crankcase vacuum minimum 10.2 cm (4 in.) of water
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.