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1977 Honda CB750K 18mm Spark Plug Service Wrench

The electrical service tool offered here for the 1977 Honda CB750K is an 18mm spark plug wrench. Its thin-wall construction and tuck-away handle address access to deep plug holes. Compare the installed plug hex and available space before choosing it for the job.

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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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1977 Honda CB750K · Electrical Tools Buying guide

Check plug access and the hex before selecting the wrench

The 18mm measurement is the wrench size for compatible plug hexes. Its 160mm overall length and stowing handle describe the tool’s reach and storage; they do not establish a replacement spark plug specification.

Parts to consider

Honda CB1100/CB1000/CB900/CB750 Spark Plug Wrench 18mm tuck-away plug wrenchThin-wall plug tool, 160mm overall, with a handle that folds into the socket for storage.View part

Use the hex measurement rather than the plug thread

The wrench fits compatible 18mm plug hexes. Do not use that number to choose spark plug thread diameter, reach or heat range. Establish the correct plug independently and compare its hex with the tool, particularly where a previous owner has changed the engine or plug arrangement.

Treat it as a plug tool, not an electrical diagnostic kit

The current product helps remove and fit compatible plugs. It does not include a meter, timing light, coil tester or replacement ignition parts. Select it for plug access and use appropriate test equipment and service information separately when diagnosing an electrical fault.

Electrical Tools: buying questions

Does 18mm describe the spark plug thread?

No. In this listing it identifies the wrench size for the plug hex. Spark plug thread and reach are different specifications and must be confirmed from the correct plug application. Do not select a plug simply because its description contains the same number.

How does the handle store?

The product is described as a tuck-away design, with the handle storing inside the socket. The complete tool is listed at 160mm overall. Compare those access and storage details with the space available around the plugs.

Will this tool diagnose a misfire?

The wrench is for plug removal and fitting. It is not described as ignition test equipment and does not establish the cause of a misfire. Diagnose the fault using the correct service method before deciding which ignition component, if any, requires replacement.

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