Hello,this is my first post here this is a great site!
I tried a search but could'nt find anything for my specific machine.Was wondering if anyone coult tell me where to set my fuel screws on my carbs,seems like it was loading up a bit at idle I have the carbs off now and it seems like it would be a pain to adjust when they are on the sled.
Any other performance tip's much appreciated THANKS.
I tried a search but could'nt find anything for my specific machine.Was wondering if anyone coult tell me where to set my fuel screws on my carbs,seems like it was loading up a bit at idle I have the carbs off now and it seems like it would be a pain to adjust when they are on the sled.
Any other performance tip's much appreciated THANKS.
alsvmax4
New member
- Joined
- Jul 9, 2006
- Messages
- 3
idle screws typicaly have a range of one to three turns out...2 turns out is pretty common....but if you feel its a bit rich at idle, I`d set them at 1 1/2 turns out from lightly seated..make sure your air inlet/s are clean...on the air box side of the carb, ..inside the throat...you`ll see a little orfice...it supplies air to the pilot jet circuit..be sure its clear..
Alright I went through the carb's with carb cleaner and comp. air already they should be good to go,i'll try 1 1/8 to 1 1/4 turns out because they were at about 1 1/2 when I checked.
Another question I have is I keep hearing how these sleds are set pretty rich from the factory,so last year I stepped the main jet down from a 153.8 to 150 maybe too lean,I never checked the plugs at wot (I know dumb on my part) maybe I should put the stockers back in?
Is it really worth messing around with the needle clip's I hear about people doing it,I just don't know if the benifits out weigh the risk of a melt down! The only other engine upgrade I did was the head gasket mod.
Another question I have is I keep hearing how these sleds are set pretty rich from the factory,so last year I stepped the main jet down from a 153.8 to 150 maybe too lean,I never checked the plugs at wot (I know dumb on my part) maybe I should put the stockers back in?
Is it really worth messing around with the needle clip's I hear about people doing it,I just don't know if the benifits out weigh the risk of a melt down! The only other engine upgrade I did was the head gasket mod.
no1chevyboy
New member
the stock setting for the pilot screw is 2 turns out, the stock main is 152.5 (-4 to +45 at 300 to 2000 ft altitude) with headgasket mod you must run high octaine
You can also drop the pilot jets down to 45s. It helped mine. I left the needle clip and mains stock.
From most guys I know that tinker with their jetting (I left mine stock except I set my pilots out about an eighth turn more due to Im paranoid about lean out) you can normally run two sizes smaller than stock. I might be wrong but I think from the factory most sleds are set up to run in almost -40 F! Dont quote me on that but if Im reading my Dad's old sno-pro jet chart right that looks about what they're set at...
Thanks for the help everyone!
I think what i'm gonna do is put the stock mains back in (mine say 153.8?) leave the needle clips and pilot jet's alone,then whenever we get some ICE AND SNOW on the lakes i'll do some runs and see what the plugs say.
The feul screws were set at one 1 1/4 the other at 1 1/2 turns i'll probably start at 1 1/2.I did notice on a spec page the 94-95 vmax was set a lot richer from factory.wonder why that is?
Thanks again keep the tips coming!
I think what i'm gonna do is put the stock mains back in (mine say 153.8?) leave the needle clips and pilot jet's alone,then whenever we get some ICE AND SNOW on the lakes i'll do some runs and see what the plugs say.
The feul screws were set at one 1 1/4 the other at 1 1/2 turns i'll probably start at 1 1/2.I did notice on a spec page the 94-95 vmax was set a lot richer from factory.wonder why that is?
Thanks again keep the tips coming!