Question about Skyteam ST 125-3 Motorcycles
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Posted on Jan 02, 2017
hi you may be better to try one size up at first then up one more as it may run better or worse make sure it dont run lean or it will burn a hole in the piston.... have you deristricted the ex pipe as taken the washer out of the down pipe
Posted on Jun 28, 2009
Hi and welcome to FixYa,
Jet size would depend which carb is installed, a Dellorto 34mm?
Initially, check the sparkplug tip colors. If very light brown to almost whitish, then lean mix; too much air, too little gas. Try raising the needle if if has notches and moving the e-clip. If fixed, use small thin washers. The basic idea is to make the needle rise early on throttle movement.
If an aftermarket open breather air filter is installed, then it would be causing the lean mix, too much air. Restrict the filter by adding temporarily upholstery foam to experiment at which thickness the flatspot would disappear.
Good luck and thank you for asking FixYa. Happy Holidays.
Posted on Dec 17, 2009
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