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1986 Honda CB700SC Carburetor Float & Pin

The carburetor float choice for the 1986 CB700SC includes a pin and specific replacement references. Compare it with the carburetor fitted to the motorcycle before ordering. Inspect the float and related fuel-entry components separately so the repair order reflects the actual damaged parts.

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Honda CB700SC CB650SC CB550SC carb float 16013-KR3-980

Honda Nighthawk Carb Float with Pin ~ Replaces 16013-KR3-980

$19.95 USD
07-4650
Rebuild your Nighthawk's carburetor with this Carb Float with Pin, replacing OEM #16013-KR3-980 / #16013-MA6-003. A critical float for proper fuel metering on the...
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1986 Honda CB700SC · Carburetor Float & Pin Buying guide

Check the float, inlet valve and drain as separate faults

The 1986 CB700SC float controls the bowl’s fuel level through the inlet valve. It does not seal the bowl drain. Inspect the actual leaking or damaged area before choosing a float-and-pin assembly, and keep the 1984–85-only drain listings outside an unverified 1986 parts order.

Parts to consider

Honda Nighthawk Carb Float with Pin ~ Replaces 16013-KR3-980 Carburetor float with pinFloat and pin replacing references 16013-KR3-980 and 16013-MA6-003.View part

The float-level check is a replacement decision

Honda specifies 18.5 mm with the float tang just contacting the float valve. If the assembly is outside specification, the manual calls for replacement rather than a tang-bending adjustment. The selected float includes its pivot pin and lists references 16013-KR3-980 and 16013-MA6-003. Inspect the needle and its seat independently before assuming a new float will stop flooding.

Keep the 1986 parts order within confirmed coverage

The float-and-pin listing explicitly covers 1984–86 CB700SC models. The available rebuild kit, drain screws and drain-screw O-rings have narrower 1984–85 coverage. A shared model name or similar appearance does not establish those earlier parts for a 1986 carburetor. Inspect the installed bank and confirm any additional service part independently.

Buying questions

Can an incorrect CB700SC float height be corrected by bending the tang?

The factory procedure specifies 18.5 mm with the tang just touching the float valve, then replacement of the float assembly if it is out of specification. Do not substitute a generic tang-bending procedure. Check valve condition and the measuring position before condemning the float.

Will replacing the float cure a leaking drain screw?

A float controls incoming fuel level; the drain screw and its sealing surfaces are a separate location. Inspect the screw, O-ring and bowl seat when fuel leaks there. The float package supplies a float and pin, not a drain screw, O-ring, inlet needle or seat.

Why are the earlier drain screws and O-rings not assumed to fit this year?

Their product bodies and vehicle applications specify 1984–85 CB700SC. The float’s broader 1984–86 range does not extend those separate parts. Obtain an explicit match for the fitted 1986 carburetor before adding drain or rebuild components.

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