Kohler — Honing Cylinder
Repair & overhaul · Crankcase
From a Kohler service manual covering: CV682, CV732, CV742, CV752. Check it applies to your exact model before use.
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Procedure
- Lower hone into bore and after centering, adjust so stones are in contact with cylinder wall; use commercial cutting-cooling agent.
- Start drill and honing process, moving hone up and down to prevent cutting ridges; check size frequently.
- When bore is within 0.064 mm (0.0025 in.) of desired size, replace coarse stones with burnishing stones.
- Continue with burnishing stones until bore is within 0.013 mm (0.0005 in.) of desired size, then use finish stones (220-280 grit) and polish bore to final size.
- After resizing, check bore for roundness, taper, and size at 3 locations, 2 measurements each.
Tools required
- cylinder hone Amazon
- coarse/burnishing/finish stones Amazon
- inside micrometer Amazon
- telescoping gauge Amazon
- bore gauge Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Honing at about 250 RPM and 60 strokes per minute
- Crosshatch 23°-33° off horizontal
- Bore within 0.064 mm (0.0025 in.) then 0.013 mm (0.0005 in.)
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.