This clamp lock can be attached to one of the 2 upper mounting holes on the engine and holds in the teeth of the flywheel, so the flywheel is blocked.
This is an inexpensive but very handy tool to help you disassemble and assemble the flywheel from the engine.
The clamp is constructed in such a way that both 6 volt and 12 volt flywheels can be blocked without problems.
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