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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...

1982 Honda CB750K · Fuel System Buying guide

Build a fuel-system order around the installed setup

Carburetor internals, engine-side holders and airbox boots serve different parts of the intake. Identify which connections or components need attention before combining kits, rubber parts and fuel-tank service items.

Count the carburetors being serviced

The featured rebuild kit services one carburetor. A full four-carburetor repair therefore needs the appropriate quantity of matching kits, but first confirm the contents and installed carburetors. Separate float, diaphragm or connecting-tube repairs may require additional items that are not listed in that package.

Keep the intake arrangement consistent

Stock airbox filters and individual clamp-on pod filters are different intake choices. Identify what the motorcycle uses now and whether the intended repair retains that setup. Check holders, boots and clamp requirements individually rather than assuming a filter purchase includes the surrounding rubber connections.

Common questions

Fuel is not reaching the carburetors. Should I buy rebuild kits first?

Check the supply side first. The original setup uses a fuel-line diaphragm, and Honda identifies blocked vent or vacuum tubes, the diaphragm and its check valve as possible causes of no fuel delivery. An internal carburetor kit will not address those restrictions.

Does a rough idle mean the carburetor jets need replacing?

Not necessarily. Honda’s fault list includes ignition trouble, contaminated fuel, incorrect idle speed and carburetor synchronization as well as carburetor faults. Diagnose these before buying jets; replacing internal parts is not a substitute for finding the cause.

Can a dirty air filter make the mixture rich?

Yes. Honda lists a dirty air cleaner among the causes of a rich mixture, alongside a stuck choke and float-valve problems. Inspect the intake and choke operation before treating rich running as proof that different jets are needed.

Not sure which part you need?

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