Kohler — Carburetor Float Replacement/Overhaul

Repair & overhaul · Fuel System

From a Kohler service manual covering: CV682, CV732, CV742, CV752. Check it applies to your exact model before use.

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Procedure

1. Remove air cleaner and carburetor; clean exterior surfaces.
2. Disconnect accelerator pump vacuum hose, remove screws and separate fuel bowl; discard bowl screws and gasket.
3. Remove float pin, lift out float and inlet needle; discard parts. Inlet needle seat is not serviceable.
4. Remove nozzle tubes with 1/4 in. open end wrench. Note and mark jets by location.
5. Remove accelerator pump cover screws and discard spring and diaphragm. Remove solenoid with 1/2 in. wrench and discard gasket.
6. Clean carburetor body, main jets, vent ports and seats with carburetor solvent; blow out with compressed air.
7. Clean fuel bowl including accelerator jet, feed hole, and check valve.
8. Install new diaphragm assembly and spring, reinstall cover with new screws; torque 1-1.4 N·m (8-12 in. lb.). Reinstall solenoid with new gasket; torque 3.4-5.6 N·m (30-50 in. lb.).
9. Reinstall main nozzle assemblies and slow jets on respective sides.
10. Attach new inlet needle into metal hinge of float; install float and needle, insert new pivot pin.
11. Invert carburetor body and measure float setting; correct setting is 1.6 mm (0.063 in.) ± 0.5 mm (0.02 in.).
12. If adjustment required, use a small flat blade screwdriver to pry tab up or down.
13. Reinstall fuel bowl with new bowl gasket and new screws; torque 2.3-2.7 N·m (20-24 in. lb.).
14. Reattach accelerator pump vacuum hose and reinstall carburetor using new mounting gaskets.
15. Reconnect spark plug leads and negative battery cable; start engine and perform Low Idle Speed Adjustment.

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.

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