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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...

1982 Honda CB900F Supersport · Spark Plug Tool Buying guide

Check plug size and working access

The wrench is specified at 160mm overall and designed for deep plug holes. Match its 18mm working size to the fitted plugs, especially if their type differs from the original service specification.

Working size and length describe different checks

The 18mm size refers to the spark-plug hex, while 160mm is the tool’s overall length. Compare both with the actual plug and access around the engine. A long tool is not automatically useful if its working size or clearance does not match the fitted component.

Protect the plug threads during service

Remove dirt from around the plugs before opening the holes, and work to the Honda and plug-maker instructions. Start the correct replacement plug carefully by hand so it is not cross-threaded, then use the prescribed tightening method. A compact handle is not a torque specification.

Buying questions

Does 18mm describe the spark plug’s thread?

It is the wrench’s working hex size, not the plug thread diameter or heat range. Match the fitted plug hex and confirm the correct plug specification separately. Sharing a hex size does not make two plug types interchangeable.

How can I avoid damaging the plug threads?

Clean around the plug first and follow the engine and plug service instructions. Start the correct plug by hand without forcing it, then use the specified tightening method. Stop if it does not turn normally; extra leverage can damage the cylinder-head threads.

Will a thin-wall wrench necessarily reach past modified bodywork?

Check the path to the plugs with the actual tank, wiring and accessories in place. The tool is 160mm overall with an 18mm working size, but that does not confirm clearance around every modification. Resolve access before loosening a plug.

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