How do you set up a DT125R power valve ? 2003 model.big flat spot above 5000 rpm is it the power valve or something else

SOURCE: my 2000 650 dakar has 5000 miles with regular

the only way to fix the problem would be to upgrade your endcan or or carbs.it is a problem with all 650 dakers.just needs tunning up.hope this helps

SOURCE: aprilia af1 125 sintesi, carb settings, what are

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.

SOURCE: 2001 yamahra YZF 1000 R has a flat spot in low

your adjusting screws need to be readjusted or you have a clogged jet in the carb.

SOURCE: Flat spot when excellerating in 1st gear between

good day just ask the qualified honda tech. to fix your problem.

SOURCE: why does my DT125 splutter at hight revs

had the same problem, all i needed to do was change the sperk plug! nearly stripped the bike right down aswel!