changing from stock yz exhaust to wr exhaust!!


(Yz426 2002)

When i change from the stock yz exhaust to the standard wr exhuast the bike is a real bitch to start when hot, the jetting is stock for YZ, what should i change jetting wise to make it better to start.

Regards Mark


You may need to lean your pilot jet, but either way, for hot starting I would check the pilot circuit.

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