Kohler CH18-CH26 Service Manual page 29

Air escaping from crankcase breather ........................................................ Defective rings or worn cylinder.
Air escaping from exhaust system .............................................................. Defective exhaust valve/improper seating.
Air escaping from carburetor ....................................................................... Defective intake valve/improper seating.
Gauge reading in "low" (green) zone .......................................................... Piston rings and cylinder in good
Gauge reading in "moderate" (yellow) zone .............................................. Engine is still usable, but there is some
Gauge reading in "high" (red) zone ............................................................. Rings and/or cylinder have considerable
Leakdown Test Results
Troubleshooting
condition.
wear present. Customer should start
planning for overhaul or replacement.
wear. Engine should be reconditioned or
replaced.
Section 3
3
3.5