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Old 06-04-2012, 01:37 PM   #12
Join Date: Nov 2009
Posts: 9

Hey, Can anyone lend you a known good cylinder? Had similar problem with my sons jr rotax, couldnt rev past past 13000 , no power, ...changed everything like you. Motor was rebuilt , used to run good before the rebuild. Ended up that cylinder was switched and it was a bad one for whatever reason. Put another cylinder on it and it runs fine.
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