2000 Yamaha 90hp 2 stroke low rpm power loss

bkirb

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May 27, 2005
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I am experiencing a loss of power at lower rpms from idle to 1/3 throttle. Had motor serviced 6 months ago and all the normal tune-up procedures done (plugs, water/fuel seperator, head torque, ect). Tested spark with timing light and doesn't seem to be a problem. When running at 1/3 throttle the motor will suddenly bog down but never stalls. Engine misses some at idle which seems to be inherant to the 2 strokes. Checked linkages, timing, treated fuel all with no result. Any ideas?<br /><br />bkirb
 
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