Kohler 83mm Rebuild Center
The 83mm Kohler Command twins are the engines we rebuild parts for most. This page puts everything in one place: which engines this covers, the part numbers our kits replace, and the three checks that get you the right kit the first time.
At a glance
| Engines | Command CH25, CH26, CH27, CH730, CH735, CH740, CH745, CH750 · CV25, CV26, CV27, CV724, CV725, CV730, CV740, CV745, CV750 · KT715–KT745 · SV710–SV840 · LH755, LH775 · ECV749 |
|---|---|
| Standard bore | 83mm (725 / 747cc) |
| Standard piston | Replaces 24-874-30-S |
| Ring sets | Style A, 1.5mm top ring: 24-108-14-S (earlier 24-108-04-S) Style B, 1.2mm top ring: 25-108-01-S Older kit cross-references: 24-108-01-S, 24-108-11-S |
| Head gasket | 24-041-13-S |
| Oversizes we carry | +0.08mm · .010 (83.25mm) · .020 (83.50mm) · .030 (83.75mm) |
Check these three things before you order
- Model and spec number. They're on the decal on the blower housing. Horsepower alone doesn't tell us which engine you have. Where to find the tag
- Bore size. If the engine has been rebuilt before, it may already be oversize. Measure the bore or check the top of the old piston for a stamp.
- Ring style (ring-only orders). Measure the top ring's thickness: 1.5mm is Style A, 1.2mm is Style B. A piston-and-ring kit comes matched, so you can skip this one.
Which kit do I need?
- Full rebuild, bore is good: the complete 83mm rebuild kit (pistons, rings, rods and gaskets).
- Top end only: the 83mm piston pair with rings, or a single piston with rings, plus a head gasket.
- Rings only, cylinders are in spec: a Style A or Style B ring set, single or two-pack, with or without gaskets.
- Cylinders bored oversize: the .010, .020 or .030 overhaul kits or pistons, matched to your machine shop's finished size.
More detail on choosing between sizes and ring styles: Kohler rebuild kits: the right one first time.