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1978 Honda CB750F Spark Plug Wrenches

The plug-service tool here for the 1978 CB750F is a thin-wall wrench with a handle that tucks into the socket. Its listed size is 18mm and overall length is 160mm. Compare those tool details with the plugs and access on the fitted engine.

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Honda CB1100 CB1000 CB900 CB750 spark plug wrench

Honda CB1100/CB1000/CB900/CB750 Spark Plug Wrench

$5.95 USD
35-0078
Reach deep CB plug holes with this "Tuck Away" 18mm Spark Plug Wrench. Works on 18mm spark plugs, 160mm overall, thinwall design fits into...
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1978 Honda CB750F · Electrical Tools Buying guide

Check socket size and access around the fitted plug

The 18mm figure identifies the wrench’s working size. It does not identify a replacement plug’s thread, reach or heat range. Choose the wrench for mechanical access and choose any new plug from its own specification.

Parts to consider

Honda CB1100/CB1000/CB900/CB750 Spark Plug Wrench Tuck-away 18mm plug wrenchThin-wall spark plug wrench with a tuck-away handle, an 18mm working size and 160mm overall length. Check the fitted plug hex and access.View part

Treat 18mm as a wrench dimension

The description calls this an 18mm plug wrench and gives its overall length as 160mm. Those values describe workshop equipment. They should not be used to specify the plug installed in the cylinder head; compare the hex for the tool and the plug application separately.

Assess the handle arrangement before choosing the tool

The handle is described as tucking away into the socket, and the socket has a thin-wall design for CB plug access. Compare that construction with the space on your engine. The wrench is not described as supplied with spark plugs or electrical testing equipment.

Common questions

Does the tool specify the spark plug I need?

It provides wrench dimensions and a plug-service application. A replacement plug has its own engine specification, which is not established by the 18mm socket size. Use the fitted hex for tool comparison and the correct plug information for replacement parts.

Is the listed 160mm measurement a plug dimension?

It is the wrench’s stated overall length. Use it when assessing access and the tool’s handling arrangement. The description does not use that number for a spark plug or establish any plug thread reach from it.

Can this wrench diagnose an ignition fault?

The description establishes a mechanical plug-service tool, with socket size and handle details. It does not identify an electrical tester. Use suitable diagnostic equipment and the applicable service information when investigating ignition faults.

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