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1985 Honda CB650SC Nighthawk Carb Floats & Components

Handle specific carburetor faults on your 1985 Nighthawk with the component that needs attention. A float with pin, drain screw with O-ring and twelve-piece felt shaft-seal set cover different repairs; match them to the carburetors on the motorcycle.

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Currently viewing Carb Floats & Other Carb Components

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Honda CB1100 CB1000 CB900 CB750 float bowl drain screw -a

Honda CB Stock Type Float Bowl Drain Screw ~-A

$6.50 USD
48-5042
Small part, but an important one. This float bowl drain screw with included O-ring allows you to properly drain the carburetor bowl without leaks,...
Honda CB1100 CB1000 CB900 CB750 float bowl drain screw

Honda CB Stock Type Float Bowl Drain Screw

$6.50 USD
48-5042
Replace your stock-type float bowl drain screw with this Float Bowl Drain Screw with O-Ring for the later DOHC and Nighthawk lineup.Note: sold each,...
Honda CB1100 CB1000 CB900 carb felt throttle and choke shaft seal set 12

Honda CB Carburetor Felt Throttle & Choke Shaft Seal Set/12

$32.95 USD
33-0044
Replace worn or missing felt throttle and choke shaft seals during carburetor service on compatible vintage Honda CB models. These felt seals are used...
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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...
Honda CB1100 CB1000 Keihin pd carb felt throttle shaft seal set 6

Honda CB Keihin PD Carburetor Felt Throttle Shaft Seal Set/6

$18.95 USD
33-0043
Replace worn or missing felt throttle shaft seals on Keihin PD carburetors. These felt seals are used during carburetor service or restoration to help...
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1985 Honda CB650SC Nighthawk · Floats & Carb Components Buying guide

Choose the small part for the carburetor fault

Check a float and its pin separately from bowl drain hardware or shaft seals. Package contents and the fitted carburetor design matter more than a shared category label.

Parts to consider

Honda Nighthawk Carb Float with Pin ~ Replaces 16013-KR3-980 Carburetor float with pinFloat supplied with pin; references 16013-KR3-980 and 16013-MA6-003.View part Honda CB Stock Type Float Bowl Drain Screw Bowl drain screw and O-ringStock-type drain screw supplied with an O-ring and sold individually.View part Honda CB Carburetor Felt Throttle & Choke Shaft Seal Set/12 Twelve felt shaft sealsSet of twelve for compatible throttle and choke shaft applications.View part

Count bowls, floats and screws separately

The float includes its pin. The drain screw includes its O-ring and is sold individually, so count the affected bowls before setting the quantity. Inspect mating surfaces as well as the removable parts; replacing a screw alone does not assess the condition of its seat.

Confirm the shaft-seal job before buying

The twelve-piece felt set covers throttle and choke shaft-seal service on compatible constant-vacuum carburetors. Compare the fitted carburetors and seal locations before dismantling. Do not choose a different felt-set size merely because another part listed for several models appears nearby.

Ordering questions

Does the float-and-pin package also replace the fuel shut-off parts?

It contains one float and its pivot pin, without the float-valve needle, seat or bowl gasket. Four floats are used across the rack, but inspect each carburetor and its valve components separately before deciding the order quantity.

What if the bowl drain still leaks after replacing its screw or O-ring?

Inspect the screw tip, O-ring groove, bowl seat and surrounding bowl for damage or debris. A new seal cannot repair a damaged mating surface. Avoid using extra tightening force to mask the leak; it can damage the screw or bowl.

How many felt seals are in the featured set?

Twelve felt seals are supplied. Confirm the compatible throttle and choke shaft locations on your carburetors before ordering; the piece count does not by itself identify every seal position.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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