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2010 Nytro 162 180hp MPI SC Clutch setup?

W
Dec 8, 2007
30
0
6
I just got a new 2010 MTX 162 with the 180hp MPI SC kit. We had it out in the hills the other day for the first time. We were riding in the 5000-7000ft range with 1-2 feet of heavy spring snow. It came with 8fs-00 weights loaded to 78 grams, bl-gr-bl spring and 14.5mm rollers. In the secondary it has a 45 deg helix and white spring. The problem is with this setup it would only pull about 7800 rpm on a climb. At home which is at 2300ft, it will pull 8800 on a flat run. Looking for some advice as to what this engine would react better to... lighter weights (or different profile), stiffer primary spring, or flatter helix. I am not new to clutching, just new to Yamaha and 4 strokes.

Thanks
 
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