Hello All,
Got a few ?'s about my quad... k got this quad was really ran like... ever mabey 10 hours full stock exp. FMF sliencer anyways first got it last year did full tune up ran pretty good went down to a yamaha shop a family members works at and got some free shop time and rejetted it ran like a champ couldn't keep the front end down on pavement... blew my knee and it just sat till now... wasn't running like before at all me took it to the St. Anthony dunes and only climbed 3/4 up soft side of Thunder(crapo's) and lil less then 1/2 on steep... did't seem to run how i think it should without paddles... msesed with the carb nothing... was told to check compresson 135-140lbs imo thats pretty good repacked silencer, Uni Drop-in, replaced the reeds with boyensen 2 stage and full rebuild on the carb don't know alot about theses carbs tried my best to do it but it's running better... but still doesn't seem to rip like it should... got some pad's went back to the dunes... climbed all the way up soft side of crapo's never tried the steep side but still seemed to hesitate 40' away from crest of soft side and almost didn't make it... ok sorry about my life story on my quad now on the ?'s....
1. Doen't seem to have the pull/power that i think it should... what could be the culprit...
2. Will a AAEN Perforamce Top end pipe... solve alot of my cravings along with respring.
3. What simple cheep mods can i do that will make a pretty good differance.
4. Next time i'm dunin would taking off the mid chain help out a bit i'm never in 4wd anyways out there...
5. i can capture some vids of it riding and stand still idle though powerband.
6. I don't feel like i'm peaking out at the power band ... kinda think i need to drop a couple main jets but my exaust if feeling pretty hot.. tried to do plug chop and burned the crap out of my hand

Spec's
1996 Scrambler
400 2 stroke
FMF Silencer
Boyesen Reeds 2 stage
Newly rebuilt carb
1 main jet size lower

 

Go at the clutching, also verify belt condition and deflection. Check your clutch centers and verify that they are at 10"