first run aftr rebuild 92 sl 650

[scottr2200]

I finally got to take my 650 out for its maiden voyage after my rebuild. she ran great has good top end, but acceleration is not even close to my 750. I didnt try but it felt like you couldn't whip it around if you tried. I took it easy on her until the tank was almost empty. any suggestions on the acceleration. I have 85's in the carbs and am running premix. do i need to open the screws more? they are set to stock and turned a little farther for the premix as i read on here. I don't remember the exact screw settings as it been 8 months or so since i did it. any help would be greatly appreciated.

[scottr2200]

photo is mag far right, center in center, rear far left
The mag plug was nice and clean looked good the center was a little darker brown looked more burned on and the rear looks very dark and burned on. the rear came out the driest of them all.They do not look like i am used to with my 750. what should i do? more fuel, less fuel ?

[xlint89]

What are the 85's? Lows or highs?
Manual shows if the upgrade kit was installed to use 93 650 settings.

93 650
77.5 main and lows
High speed screw 7/8M 3/8C 5/8P
low screw 1/4 turn
Pop off 10-18 psi

[scottr2200]

both highs and lows were 85's.

[scottr2200]

from what i read if the plugs are clean then you are rich with fuel. so it looks like 1 is rich and the others are lean?? is this correct?

[xlint89]

both highs and lows were 85's.

92 650 used a 80 main and a 85 low. Any mods done to the ski?

[xlint89]

from what i read if the plugs are clean then you are rich with fuel. so it looks like 1 is rich and the others are lean?? is this correct?

Was the pic of the plugs after a WOT plug chop? Or was that just how they looked after idling back in?

[scottr2200]

it was how they looked after idling in. the motor was bored 1 over. that is all of the upgrades done to it.