MXZ / Legend / Summit / Grand Touring / Formula
Hi, I Have a 94 Ski-doo summit 670 that I can't get to rev above 4500 rmp's I just rebuilt the top end rejetted it to 380, 390 to iliminate the h.a.c., cleaned the carberators, cleaned the gas tank, changed the spark plugs, spark plug caps, thermostat, and replaced the key switch. After all of...