HPI IGNITION 1970-1978 Yamaha SC YZ MX RT 360 400 500
HPI IGNITION FOR 1970-1978 Yamaha SC YZ MX RT 360 400 500
The kit includes a stator, CDI, coil magneto, plug cap, kill switch and mounting hardware. This ignition has no lighting coils. It is for motocross use. HPI is the go to source for electronic ignitions for vmx and pvmx bikes.
These kits are universal applications. Some models may require you to drill larger mounting holes, sand a section of the mounting plate with a file to open up a slot or sand mounts down. Some bikes do required the use of extra gaskets under the ignition cover to make enough clearance for the stator. The magnetos do not have a keyway. You have to set the timing with a dial indicator and then torque down the crank nut. They stay in place once tightened.
Please note that on certain early models, you will have to purchase a new crank nut for the rotor. The stock longer nut does not work. Your local hardware store should have the 1.25 or 1.50 pitch metric nut required.
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