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1972 Honda CB750K Electrical Service Tools

The two tools here address spark plug access and the ignition-switch retaining nut. They do not diagnose electrical faults or replace ignition components. Choose by the mechanical task, then compare the installed plug or switch arrangement with the product description.

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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...
Honda CB750K CB550K CB500K ignition switch nut tool

1969-76 Honda CB750K / CB550K / CB500K Ignition Switch Nut Tool

$19.95 USD
35-9119
Loosen and tighten the ignition switch nut without damage using this Ignition Switch Nut Tool.Key Features• Ignition switch nut tool• Tightens and loosens without...
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1972 Honda CB750K · Electrical Tools Buying guide

Prepare for plug or ignition-switch service

A plug wrench and a switch-nut tool have different working ends. The plug-wrench listing specifies an 18mm socket and thin-wall design; the switch tool is listed for the original CB750K application.

Parts to consider

Honda CB1100/CB1000/CB900/CB750 Spark Plug Wrench 18mm tuck-away plug wrenchAn 18mm thin-wall plug wrench, 160mm overall, with a handle that folds into the socket.View part 1969-76 Honda CB750K / CB550K / CB500K Ignition Switch Nut Tool Ignition-switch nut toolA tool for loosening and tightening the ignition-switch nut, listed for 1969–76 CB750K models.View part

Check the plug and the available access

The wrench description states an 18mm size and a thin-wall design for deep plug holes. Compare those details with the plugs fitted to your engine. The tool size does not identify the correct replacement spark plug or confirm its electrical specification.

Identify the switch-retaining arrangement

The ignition-switch tool acts on the retaining nut. If a previous owner changed the switch or its mounting, compare the hardware before ordering. The listing does not establish that it works on every universal switch or custom panel arrangement.

Buying questions

Does the plug wrench identify which plugs to buy?

No. Its 18mm size describes the hex it engages. Select replacement plugs using the engine application and their own specifications; a wrench that fits the hex does not establish plug compatibility.

Will the switch-nut tool fix an ignition fault?

It is a mechanical service tool for the ignition-switch nut. It does not test the circuit or replace the switch. Identify an electrical fault separately before choosing replacement ignition components.

Can I use these tools on a modified motorcycle?

Compare the installed hardware first. The switch tool has a stated model application, while the plug wrench has a stated hex size and access design. Changed plugs, switches or mountings can alter which tool is suitable.

Not sure which part you need?

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

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