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1978 Honda CB400TII Hawk II Carburetor Tools

The Hawk II has two carburetors, and this universal two-gauge kit lets you compare their vacuum readings during synchronization. Before ordering, check the adapter connections and access on your motorcycle. Plan the job with the Honda service procedure and the supplied tool instructions.

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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 CB400TII Hawk II · Carburetor Tools Buying guide

Check adapters and access before buying the gauges

Two gauges provide a reading for each carburetor. The kit includes hoses, damping valves and two lengths of 5mm-thread extensions; verify these connections against the vacuum take-off points on the fitted motorcycle.

Parts to consider

Universal Motorcycle Carburetor Synchronizer Vacuum Gauge ~ 2 Carb Synchronizer Two-gauge carburetor synchronizerUniversal two-carb kit with hoses, damping valves, mountable bracket, instructions and 5mm-thread extensions in 180mm and 65mm lengths. Check adapter fit and access on the fitted carburetor arrangement.View part

Know which pieces come in the kit

The synchronizer includes two gauges on a mountable bracket, hoses, damping valves, instructions and 180mm and 65mm extensions with 5mm threads. The damping valves help control needle movement. Check the adapter fit and hose routing before starting, especially if the intake or carburetor arrangement has been changed.

Prepare the motorcycle before comparing readings

Honda describes synchronization as a service procedure using vacuum gauges and adapters at the engine. Follow the correct manual preparation and tool instructions, including safe access and working conditions. Diagnose other causes of poor running first so that a balance adjustment is the right next step.

Common buying questions

Is a two-gauge kit suitable for the Hawk II layout?

The original Hawk II uses two carburetors, making two simultaneous readings appropriate for synchronization. This kit is universal, so confirm adapter thread and access before treating it as ready to connect to your motorcycle.

Which adapter sizes are included?

The supplied extensions have 5mm threads and come in 180mm and 65mm lengths. Compare the vacuum take-off connections and working space before ordering, particularly if the carburetors or intake components have been changed.

Why are damping valves included?

They help control needle movement so the vacuum readings are easier to compare. Set up and use them according to the supplied instructions, together with the Honda synchronization procedure for the motorcycle.

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