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on lake starts great and idles great. take off seems alright until about 1/4 throttle then i have nothing after that. just puts along fast enough to create a tiny wake behind us 1500-1550 rpm. took it home and changed spark plugs and tested them all. they all have blue spark. compression tests resulted 122- 125 all the way around. brand new gas with synthetic 2 stroke oil mixed at 50:1. started it in garage with ear muffs on and at 4600 rpm almost wot it sounds like an indy car with tonnes of power with no load on prop(17"). again went back to the lake and same results of great start and idle but alright take off then no power after 1600 rpm. can anyone please help. Karma is a great thing..
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