Carburetor Float with Pin | Honda CB360 / CL360 / CJ360

Description

Carburetor Float with Pin | Honda CB360 / CL360 / CJ360

If your CB360 is flooding, running rich, or fuel is pouring out of the carburetor overflow — your float is likely cracked. The original plastic floats develop hairline cracks over time, fill with fuel, and sink instead of floating. This replacement is an exact match for the factory Keihin carburetors used on all CB360, CL360, and CJ360 models.

Why You Need This

The carburetor float controls the fuel level inside the float bowl. When it’s working, the float rises with the fuel level and shuts off the float needle valve at the correct height. When the original plastic float cracks — and after 50 years, most of them have — fuel seeps inside the float body. The float gets heavy, can’t rise to shut the valve, and fuel overflows into the engine or out the overflow tube. Symptoms include hard starting, fuel smell, fouled plugs, and fuel dripping from the carb.

Our replacement float includes a new float pin and is an exact match for the original Keihin part. Sold individually — one float services one carburetor. You’ll need two to replace the floats in both carbs.

Specifications

Note: The recommended float height range of 16.5–18.5mm accounts for the variation between individual carburetors and motorcycles. A higher float level (closer to 16.5mm measurement) keeps the fuel level higher in the bowl, which can prevent the pilot jet from starving when coming to a stop from high-speed riding.

Does NOT fit: Honda CB350 / CL350 / SL350 — those models use a different float. See our CB350 Carburetor Float instead. Also does not fit CB450 or CB550.

Installation

Difficulty: Beginner

1. Remove the float bowl — Undo the float bowl screws and carefully remove the bowl from the carburetor body.
2. Remove the old float — Slide out the float pin and lift the float off. Note the position of the float needle — it hangs from the float tab.
3. Test the old float — Soak the old float in gasoline for several minutes, then shake it next to your ear. If you hear liquid sloshing inside, the float is cracked and must be replaced.
4. Install the new float — Be very gentle — the float body can bend and dent easily. Hook the float needle onto the float tab, set the float in position, and slide the new pin through.
5. Set the float height — Hold the carburetor with its main bore vertical. Let the float tab rest against the float needle without compressing the spring-loaded plunger. Measure from the float bowl gasket surface to the top of the float. Adjust by carefully bending the float tab until you reach 16.5–18.5mm.
6. Reassemble — Reinstall the float bowl with a fresh O-ring gasket.