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1978 Honda CB400TI Hawk I Carburetor Synchronizing Tools

A two-gauge vacuum kit helps compare carburetor readings during service on a 1978 Hawk I. Honda’s standard procedure connects the gauges at the cylinder head. Check those access points and the adapter requirements before buying this universal kit, especially on a modified bike.

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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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1978 Honda CB400TI Hawk I · Carburetor Tools Buying guide

Check adapter fit before planning a balance check

The kit combines two gauges with hoses, damping valves and threaded extensions. Its connection details matter as much as the gauge count: match the 5 mm threads to the carburetor setup being serviced.

Parts to consider

Universal Motorcycle Carburetor Synchronizer Vacuum Gauge ~ 2 Carb Synchronizer Two-carburetor vacuum gauge kitUniversal two-gauge kit with hoses, damping valves, mounting bracket and 5 mm-thread extensions in 65 mm and 180 mm lengths.View part

Lay out the supplied connection pieces

Two gauges, hoses, damping valves and a mounting bracket are included, together with instructions. The threaded extensions are 5 mm, in 65 mm and 180 mm lengths. Compare those fittings with your available vacuum connections before buying additional adapters or starting the work.

Use the correct service sequence

Choose the gauge kit for vacuum comparison during carburetor service. Honda’s original procedure uses adapters at the cylinder head. Follow the correct service sequence for your intake setup, including any instructions needed for replacement carburetors. Follow the kit instructions for its damping valves.

Buying questions

Are the two gauges and hoses included in one kit?

Yes. The kit includes two gauges, hoses, a mounting bracket, damping valves, instructions and threaded extensions. It is supplied as a two-carburetor synchronizing kit rather than as a single gauge.

What size are the supplied threaded adapters?

The extensions use 5 mm threads and come in 65 mm and 180 mm lengths. Verify the actual vacuum connection before ordering; verify the actual vacuum-port thread rather than relying on a broad model application.

What are the damping valves for?

The included damping valves help control needle jump while using the gauges. Follow the supplied tool instructions and the appropriate carburetor service procedure rather than treating fluctuating readings as a reason to guess at an adjustment.

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

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