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1964 Honda CB72 Fuel System

For fuel-system work on a 1964 Honda CB72, establish the repair needed before building the order. The featured bowl-drain screw covers CB72 1961–66 and comes with an O-ring. Identify any replacement carburetors or bowls before applying that motorcycle year range.

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Honda CB750 CB550 CB500 CB450 CB400 float bowl drain screw

Honda CB Stock Type Float Bowl Drain Screw

$7.50 USD
48-5041
Replace your stock-type float bowl drain screw with this Float Bowl Drain Screw with O-Ring.Note: sold each, order the quantity you require.Key Features• Stock-type...
Universal motorcycle carburetor synchronizer vacuum gauge 2 carb synchronizer

Universal Motorcycle Carburetor Synchronizer Vacuum Gauge ~ 2 Carb Synchronizer

$54.95 USD
37-0003
Carburetor and throttle body synchronizer kit for bikes with 2 Carbs. Makes synching your carburetor setup fast and easy! For use with Honda, Kawasaki,...
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1964 Honda CB72 · Fuel System Buying guide

Build the order around the work you need to do

A bowl-drain repair is the supported purchase here. Separate it from faults elsewhere in the fuel system, and keep the fitted carburetor details with your parts list when earlier modifications are uncertain.

Parts to consider

Honda CB Stock Type Float Bowl Drain Screw Bowl-drain screw with O-ringStock-type replacement, sold individually with an O-ring. Specified for CB72 1961–66; a changed carburetor or bowl needs its own application check.View part

Find the cause before buying a small replacement

A drain screw belongs on the order when that component has been identified as needing replacement. If fuel is escaping around the bowl, establish where it originates before assuming the screw is responsible. A single small replacement cannot be chosen reliably from the symptom alone.

Keep other carburetor parts on their own application checks

Do not extend this screw’s year coverage to floats, valves or other seals. Select those parts against their own specifications and the assembly being repaired. For a workshop-tool purchase, establish the applicable service method and connections before choosing universal measuring equipment.

Fuel-system buying questions

What if a previous owner fitted different carburetors?

Identify the replacement carburetors and bowls and use their parts requirements. The drain screw’s CB72 1961–66 application includes this model year, but does not establish compatibility with a different assembly fitted during earlier work.

How do I choose the order quantity for a partial repair?

Buy for the drain positions that have been identified as needing replacement. One order unit contains one screw and its O-ring. A complete-motorcycle quantity is not specified, so base the quantity on the actual repair scope.

Should a bowl-area fuel leak put this screw on my order?

Have the source of the leak identified first. A leak near the bowl does not establish which component needs replacement. Add the screw when the diagnosis calls for it, and select any other parts for their own confirmed application.

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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