Help identifying carb adjusting screws

[Wolverine]

I am in the process of a resurrection of my 2001 XP. I rebuilt the carburetor (with 'mikidymac' instruction thread). XP fires up, seams to idle good, runs slow , no 'pop' off (quick acceleration) speed and only 1/4 of performance (speed) from the past. Looking to adjust the carb. I have attached pictures of the adjuster screws locations. Would someone educate me on what each of these screws are? Idle. low speed, high speed and the 4th? I found a great post of how to adjust each for top performance, but don't know which screw is what.

 

[mikidymac]

1&2 are the Low Speed screws. 3 is the idle. 4 on both carbs are High Speed screws. Just set them to the book values.

 

[Wolverine]

Thanks mikidymac. I 'thought' I set them to the specs you stated in your rebuild instructions, but now I can verify.

 

[mikidymac]

2001 XP is LS = 1-1/2 turns out
HS = 0

 

[SIMPLEARKANSAN]

1&2 are the Low Speed screws. 3 is the idle. 4 on both carbs are High Speed screws. Just set them to the book values.

I had read to open highs and lows an extra 1/8 turn to richen things up on 951 engines. Is that necessary, or should we just stick with the specs?

 

[mikidymac]

If it is a stock ski, then stock settings.
BTW my 2001 XP is completely sock with stock settings and has been flawless.

 

[SIMPLEARKANSAN]

Thanks. My ski is a 98 gtx and it’s stock. I also read to add 4 Oz per gallon of non-ethanol gas even with oiler intact. Is that even necessary? Do you add any additional oil to your gas?

 

[mikidymac]

No, you don't need to add any more oil to these.

 

[SIMPLEARKANSAN]

I meant to say 4 Oz per 5 gallons, but glad to know they don’t need anything extra. I’ll make sure all of my settings are back to stock and just run non-ethanol without extra oil.

 

[mikidymac]

Non-ethanol is great if you have it available. I have been running our California 10% 87 octane for years without a single issue.