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1980 Honda CB650 Floats & Air Cut-Off Parts

Float, air cut-off and bowl-drain repairs use different products on the 1980 CB650. Check the exact carburetor and removed parts before ordering. The air cut-off option with a cover provides a different repair scope from renewing the internal diaphragm assembly alone.

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Currently viewing Carb Floats & Other Carb Components

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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 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 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 CB650 · Floats & Air Cut-Off Parts Buying guide

Decide whether the carburetor cover or only its internals need repair

A float is supplied with its pin, while drain screws include their own O-ring. For the air cut-off system, compare the existing cover and mounting before choosing the package that includes a replacement cover.

Parts to consider

Honda CB750 / CB650 / CB550 / CB125 Carb Float ~ Replaces 16013-405-004 Carburetor float with pinFloat supplied with its pin; four floats are specified per motorcycle.View part Honda CB Air Cut Off Valve With Cover ~ Replaces 16048-429-771 Air cut-off valve with coverDiaphragm, spring, O-ring and cover for the listed 1980 CB650 carburetor application.View part Honda CB Stock Type Float Bowl Drain Screw ~-A Drain screw with O-ringSold individually, with its sealing O-ring included.View part

Related parts: Air cut-off valve parts · Drain-screw O-ring four-pack

Select the air cut-off repair scope

The featured package includes a diaphragm, spring, O-ring and cover. The separately linked air cut-off product addresses the valve components without that cover being listed in its package. Compare the removed assembly and choose the scope the carburetor actually needs.

Keep drain seals separate from floats

The float comes with a pin, with four floats specified per motorcycle. A complete drain screw is sold individually with its O-ring, while the separate O-ring pack contains four seals. Count the carburetors being serviced and inspect each screw before ordering.

Ordering 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 the float pin included?

Yes. The float product includes its pin. Four floats are specified per motorcycle, but order for the actual number being replaced rather than assuming the listing supplies all four.

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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