Kohler — Starter Drive Service (inertia drive, Style A)
Repair & overhaul
From a Kohler service manual covering: CH18, CH20, CH22, CH23, CH25, CH620, CH630, CH640, CH670, CH680, CH730, CH740…. Check it applies to your exact model before use.
Applies to: Kohler CH18, Kohler CH740
Before you start
- Do not over-tighten vise as this can distort drive pinion.
Procedure
- Remove starter from engine and remove dust cover.
- Hold drive pinion in a vise with soft jaws when removing or installing stop nut.
- Remove stop nut, stop gear spacer, anti-drift spring, dust cover spacer, and drive pinion.
- Clean splines on drive shaft thoroughly with solvent. Dry splines thoroughly.
- Apply a small amount of Kohler electric starter drive lubricant to splines.
- Apply a small amount of Loctite 271 to stop nut threads.
- Install drive pinion, dust cover spacer, anti-drift spring, stop gear spacer, and stop nut. Torque stop nut to 17.0-19.2 N·m (150-170 in. lb.). Reinstall dust cover.
Tools required
- soft-jaw vise Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 17.0-19.2 N·m (150-170 in. lb.)
Full service-parts list: Kohler CH740 →
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.