Airborne Flying Services of Hot Springs, Ark., developed and now offers the Valve Wizard, a set of three valve spring compressor tools for Lycoming O-235, O-290, IO/O-320, IO/O-360, AEIO-360, O-435, ...

Valve spring compression tool that fits Lycoming and Continental engines. Valve Wizard is a specifically designed and patented valve spring compressor tool that fits ...

Utilize a valve spring compressor tool to compress the spring, enabling you to access the keepers/locks holding it in place. Be cautious when using this tool, as springs have significant tension and ...

Fittings such as these, for connecting a compressed air line to the spark plug hole for valve support, are available at most auto parts stores. Occasionally it is necessary or desirable to inspect or ...