My 2000 DS also suffers bottom end bogging. My bike is still standard in terms of engine and carburation. Throttle response is very poor and bottom end power SUCKS.[img]i/expressions/face-icon-small-disgusted.gif[/img]
Mid range however is awesome. From previous posts in the forum I figured it might be a float level problem. Can anyone please tell me what the float level should be and how to measure it?

 

Actually, my stock DS had decent low end power, but it could definitely be improved upon. Perhaps it's just luck of the draw. I think that a little more flow will solve my problem for the time being. Of course once I get a better feel for the quad, then I'm sure I'll be looking to spend more $$ to get it to where I want. I DO know that shortly after I get my pipes & power kit, I'll be getting some Timmyboy A's and a steering stabilizer. BTW, got the Timmyboy lead on this board, thanks guys...

 

BlueBull,
The lack of low end power is not caused by float level. It sounds like its running rich and is having trouble in the transition from low to mid rpms. You didn't say how top-end was or the altitude that you do most of your riding so If you're in high altitude (3000'+) then you may need to go down a size on the main jet, this will also cause a sputter just before it hits the rev limiter. When I rode in high altitude I found that removing the air box cover helped alot, in fact, I never put it back on. If you ride below 3000'you may just need to move the needle clip up the needle one or two positions (to lower the needle in the jet) and adjust the pilot screw until it runs better. There has been quite a few posts on this subject in the past with some helpful info. Just use search and use key word "carb" you wont have to go back much farther then a couple of weeks.
If you were thinking about An aftermarket pipe or modded end cap with a K&N filter,do so and that will really wake up your low end. There are plenty of posts on that subject as well.

 

Thank you JSsDS. I think you are right about the bike running to rich. Altitude where I ride is +3200. Top end of the bike is good up to hitting limiter. Main jet is 165 and needle has been lowered. The problem is really at low revs only and it seems to worsen as the engine gets hotter. I've taken the float bowl off the carb and with the naked eye the float appears to be at its lowest possible (Rich). Phoned my dealer who could not find float level in manual, but said according to the pictures it appears the top of the float should be horizontal to gasket surface.