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1980 Honda CB650C Custom Carb Floats & Small Parts

Floats, bowl drain screws and air cut-off parts address different carburetor repairs on the 1980 CB650C. Inspect the actual assembly before ordering. The float includes a pin, and the selected individual drain screw includes its O-ring, helping keep small parts and quantities clear.

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Currently viewing Carb Floats & Other Carb Components

Honda motorcycle parts

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Honda CB1100 CB1000 CB900 CB750 float bowl drain screw o-rings pk 4

Honda CB Float Bowl Drain Screw O-Rings Pk/4

$5.80 USD
48-0792
Replace your float bowl drain screw O-rings with this Float Bowl Drain Screw O-Rings 4-Pack.Key Features• Float bowl drain screw O-rings• 4 per packFitment...
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 CB900 CB750 CB650 CB450 CB400 air cut off valve 16048-429-771

Honda CB Air Cut Off Valve ~ Replaces 16048-429-771

$26.95 USD
20-4020
Replace your DOHC CB's carb air cut-off valve with this Carb Air Cut-Off Valve, replacing OEM #16048-429-771 (diaphragm) and #16048-425-771 (spring + 1 O-ring).Key...
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...
Honda CB750 CB650 CB550 CB125 carb float 16013-405-004

Honda CB750 / CB650 / CB550 / CB125 Carb Float ~ Replaces 16013-405-004

$27.95 USD
20-6509
Replace your late-'70s CB carb float with this Carb Float with Pin, replacing OEM #16013-405-004 / #16013-393-004 / #16013-KCY-670 / #16013-MN1-671.4 carb floats are...
Honda CB1100 CB1000 CB900 CB750 CB650 carburetor cap screw set 8

Honda CB Carburetor Cap Screw Set/8

$5.80 USD
73-0100
Refresh your DOHC carb cap screws with this Carburetor Cap Screw Set of 8 with metal washers.Key Features• Carburetor cap screw set, 8 pieces•...
Honda CB900 CB750 CB650 air cut off valve with cover 16048-429-771

Honda CB Air Cut Off Valve With Cover ~ Replaces 16048-429-771

$34.95 USD
48-9029
Replace your carb air cut-off valve with this Carb Air Cut-Off Valve with Cover. Replaces OEM #16048-429-771 (diaphragm), #16048-425-771 (spring + 1 O-ring), and...
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1980 Honda CB650C Custom · Carb Floats & Small Parts Buying guide

Choose the small carburetor part that matches the fault

The featured float has a stated four-per-motorcycle requirement, but the product is ordered by the quantity needed. The air cut-off package and drain screw are separate choices for different locations on the carburetor.

Parts to consider

Honda CB750 / CB650 / CB550 / CB125 Carb Float ~ Replaces 16013-405-004 Carburetor float and pinFloat supplied with a pin. Four floats are specified per motorcycle, ordered by the quantity needed.View part Honda CB Stock Type Float Bowl Drain Screw ~-A Bowl drain screw with O-ringIndividual float-bowl drain screw with its O-ring included.View part Honda CB Air Cut Off Valve ~ Replaces 16048-429-771 Air cut-off valve partsDiaphragm, spring and O-ring for the listed 1980 CB650C carburetor application.View part

Keep floats and needles distinct

The selected float is supplied with its pin, while the float needle is a separate metering component elsewhere in the selection. Inspect both during service and confirm what needs replacement. Do not use the four-float per-bike count as a statement of package contents.

Check the air cut-off package

The selected air cut-off parts include the diaphragm, spring and O-ring described for the 1980 Custom. A separate product adds a cover. Compare the existing cover condition and the actual carburetor arrangement before selecting that broader package.

Carb Floats & Small Parts questions

Can I use one float-height setting for every carburetor listed with this float?

Use the Honda specification for the exact carburetor fitted rather than borrowing a setting from another application. Check free movement of the float and valve, verify the specified float height or fuel level, and confirm fuel shuts off without leakage before use.

Is an O-ring included with the drain screw?

Yes. The selected screw is sold individually with its O-ring. Avoid adding a separate replacement seal unintentionally when that included part covers the job.

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.

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