mountain set up for 2001 800 144?? help need info asap

[overkill131313]

I'm working on a friends 2001 summit 800 144. I have to put new reed cages on and go through all the clutches and just give it a good service.

can anyone tell me what is a good set up for this sled in the clutching, gearing, and carb set up. if Im taking it all apart I would like to compare what is good and what works, with what it has now. we ride at 3000-5500 feet. slight around the house but mostly in the mountains. please I need info and working on it asap.

 

[maxwell]

how many miles? probly enough to do the following

replace primary and secondary springs (stock)

replace primary buttons and clean both clutches well

gearing is fine

carbs might be a tad rich...

but u wont know until u run it and look at the plugs and wash

 

[overkill131313]

ok just got them apart. the rollers are really worn but still turn nice. so I will change them. buttons yes. not fimmilar with ski doo clutch but where are the weights like in a ploaris. it looks like there is just a ramp and the roller rides on it. how does a skidoo clutch bring down RPM? polaris you add weight? this is kinda new to me.

 

[Modman]

ok just got them apart. the rollers are really worn but still turn nice. so I will change them. buttons yes. not fimmilar with ski doo clutch but where are the weights like in a ploaris. it looks like there is just a ramp and the roller rides on it. how does a skidoo clutch bring down RPM? polaris you add weight? this is kinda new to me.

No weights like Polaris. Ski Doo clutches use the arms to push on the ramps. You can add weight on the rollers, pins in the rollers, arms or change the ramps. Use the clickers to fine tune the RPMs. How much rpm do you want to drop and why? Are you looking to just decrease top speed rpm?

 

[Dynamo^Joe]

That 2001 has a formula secondary on it. I have an excellent setup if the guy is willing to get an HPV secondary for that sled.
The kit from me would come with a primary spring/helix/pin kit.
You'd install the parts with that secondary on the sled, calibrate the belt deflection...hammer down.
If that engine has some good compression of more than 135 lbs hot engine, then this kit with the marriage of a powdermax type soft paddle track will give a stock xp800 grief on a hill.

I always find clutches on ebay motors.

This is the perfect secondary clutch from a 2002 model, has same sheave angle and belt width.
110358338541
How can you beat a buy now for that low?

Other one's that just need to be taken apart and have one shim inside removed to make the 1-3/8 belt width.
220373188819
260372465393
110360730254
140306462996
370171276281

In canada for $120 buy now
250384075861

 

[overkill131313]

not looking to change the RPM, was just wonder what makes it tick lol. so just going to change the rollers because they are worn. the primary clutch sure makes a rattle noise but everything seems good but the rollers. do these clutches always make this noise?

 

[maxwell]

there is also a platic cup that goes over the primary spring..i have seen many of those disintegrate..sometimes causing rattling..

other than that if its at idle would that not mean the idle is just to low and the arms are smacking the ramps?

 

[overkill131313]

plastic cap is the only thing I didnt replace! lol new rollers and washers, ramps, buttons and o-rings, and cleaned it..... boy $350 (can) later ouch. is this normal for a skidoo primary clutch every 2500 km. I will set the idle higher because it was low. I have three polaris sled from a 900,700,550 that have over 3000 miles and have never needed a part. I just clean them once a year!

what is red line on this engine? is that what the 3 bolts that change the ramp angle do. what does the number mean? higher number does what to RPM. what should it be at?

 

[Ancient Sledder]

Max RPM is 8000. Everybody says tach is 200 rpm low. Changing the "clicker" number will change the max rpm by 200-250. If it tops out at 7400 on "3" then moving it to "4" will bring it up to 7600-7650. Don't take the bolt all the way out to turn it 'cuz the washer will fall out. Then you take the clutch apart again.

 

[overkill131313]

thanks for all the info. I just got it running after I changed the reed blocks and it runs on one cylinder at low rpm. I dont know much about these flat slide carbs but I took the idle jet out and looks good. it is running on the pto side yet both have spark and compresion. takes off great just idles on one cylinder. any one have a sudjestion? and all the cluch work and it is quiet now lol. so I have to figure out the idle thing and still change the sliders in the track.

 

[Ancient Sledder]

As I understand engines,they need spark,compression and fuel. If you have spark and compression then the problem has to be fuel related. This will also include the incoming air, so it has to be too rich at idle, too lean or no fuel at all. A common problem on those was the carb boots coming apart and sucking air. If that's not the problem then tear apart the carb. Years ago I found a dead spider in one of my carbs and he managed to shut off the fuel in that carb. Good Luck.

 

[timbo]

sounds like choke plunger hanging up on that side.make sure it has some freeplay.

 

[overkill131313]

hey thanks! it seems to be the choke! not to sure but it runs alot better. I got the idle up so it should work in the mountains. was out on the lake to day and got 148 KPH on the speedo. and it idles now lol. Thanks for the help and info.

what should the fuel screw be set at? (I think it is called a fuel screw on these carbs) I have it at 1.5 is this the same idea as an air screw but completely opposite.... turn it out gives more fuel??? any info on this would be good. when going up the hill I guess I would want to go what way??? or does the dpm adjust this?

 

[timbo]

1.5 is good, dpm will compensate for altitude.can go 1 size down on main jet(490 from 500). check temp sensor and light,sensor allso tells dpm engine temp,runs rich when cold.sounds like you've checked the rest,good luck. hope this helps.

 

[overkill131313]

oh it has 480 in the main. hasnt melted down yet lol seemsz to run good now. has a hesitation when you punch it quick but pulls right through it and climbs to 148 kph quick.