i dont understand it pulls hard and gets there quick but when it hits 105 it falls on its face. no more power!

HHMMMM ? maybe the clutches are dirty or the plastic pucks are worn out on both the drive and driven or the clickers need to be uped one number, I'd start with looking at the clutches. Put a black marker line on both of them and run it and see how far the belt is going up into them for starters.

just put new picks in my sled and bought a new belt took it for a ride and got it going 100 @ 8500 rpm and thats it! i could hold it for miles and get nothing else.
ill try something. thanks for the starting point. :help:

Check the secondary buttons as stated, and is thebelt the same one you previously ran? Try setting the clickers on a lower number, and see if that gives you more speed.

I am having similar problems, only mine isn't reving 8500. only 7500!!!

If it's reving 8500, i'd say one click setting down on the clickers might add more top end.

Mine @ 7500rpm's will only do ~90-95mph! getting fixed for next weekend..............

i am running the same belt. i went to the lake and lined up against a srx and stayed side by side down the track his speedo said 118 and mine said 105. what do guys mean by the clickers is that the adjustment in the clutch or what? I got to run its normal rpm 8300 but when it get to 105 it still does nothing. i found out that i had my track to tight so im gonna fix that first befor i try anything else.

clickers are just the 3 bolts on the primary. Look at it next time you are out, the bolt head fits into a mold in the primary casting, just loosen the bolt/nut, and turn either one number up or down. You'll see the numbers when you look at it.

really simple once you see it. the numbers aren't in order, but say going from 4-5 it will increase rpm's by ~200.

Hey Stevie its PJ


quick solution to your problem...buy a green sled!


haha just joking


oh ya me and chad raced tonight i was on the zl 600 and he was on his edge x 500 we were dead even all the way up to 95...i miss my firecat :banghead:

loosend the track and same result but the trails suck right now. :banghead:
cleaned the clutches as good as i can with out tearing them apart and it still didnt do anything, turned the clickers down to factory # to run 8300 RPM but it only runs about 8100.
im wondering if the secondary clutch will change the rpm?
Im still stuck at 105.

On mine I've been told i need more rear spring tention. If the rear spring (Secondary) doesn't have enough tention it will cause it to open up too soon, and somehow this kills top end speed, and rpm's.

What are your sliders like? All your track wheels? Just give them a quick ckeck.

just replaced wheels and checked slides all good.
but thanks for secondary tip.
more than likely thats my prob.
ill try that and see what happens.

Find out what the scondary spring preload is supposed to be for the sled. The secondary spring could have weakened, and needs to be set in a stiffer hole. They go A1,B1,C6,A6,B6,C5,A5,B5, soft to firm.

i did that.
it was in b6 and i put it in a5 helped alot.

i went to the lake and was tachin 8300 doin 110 i had a time to pull away from 600

they all took me on take off because all i did was spin till 60 and i would catch

them accept for an f6 i ran outta track befor i could go by him.

i only have 96 carbide picks and i had an old belt because the one i had i fried when i forgot to put the tension on the spring. :banghead:

but for some reason i took one more run and it was tachin 8300 doing 110 and i

just ahead of an xc 600 then the tach jumped right to 8600 and jumped instantly past 115 left that xc in the snow dust. i dunno what happened.

then i took it for one more ride on the railroad bed and it did it again but then fell to 8100 and mph fell too.

My problem was a bad spark plug, you could also have a bad one. My rpm's would jump around slightly, so it could be your problem also. What are your spark plug colors? Was it because you hit an icy spot on the trail? 110mph seems plenty fast on the trails if you ask me. On the lake maybe not...........

that could be i havent changed the pulgs for a while i usally dont unless one fouls.

but it wasnt tachin 8500 all day then it jumped up to it and ran like demon then i

tried it on the rail road bed and it did again then i tried one more time and it did it

again then it fell off and i didnt try it after i think it is just my belt

but usally when i take my plugs out they are either black or a little brown.

but with your did it jum around idling or at at full rpm?

my tach jumps some idling.

No, mine didn't @ idle. It idled fine. Even @ top speed it only would jump about 100-200 rpm's. Only once or twice.

I was only running on 2 cylinders (81 mph) In your case it is likely your belt. But if it's doing it at idle it could be your crank seals, I hope that is not the case!

no i dont think its my crankseals i think its my carbs iv played with the adjustment
and it jumps a few rpms since i maybe dont have set exactly the same.

but it doesnt do al full rpm only idling so i think its my carbs.

but how didnt you notice you were on only two cylinders you can feel the diffence
the minute you hit throttle even idling you can tell.

i bet it made a world of diffence after.

does you sled foul plugs often?

if it does check the plug boot i had that problem it was arching off everything that
was metal accept for the plug, look under the hood in the dark if you see light blue
streaks flyin around you have bad plug boot or they are corroded or push the wire
into the boot.

it's a long story. In the end the dealer set/cleaned the carbs, charged me an arm and a leg and the sled wouldn't run! They had the main air screws turned ALL the way in! what retards! That it why I was fouling plugs, so this one might have been an old fouled one that I got mixed in with the good ones.

I have never driven a sled before and I thought it had good pick up until 60mph. A sled friend told be it didn't sound near "crisp" as it should, I took that into consideration and checked the plugs.

All along I thought it was the clutches because it wasn't reving high enough (7300-7500 rpm's)

Plugs aren't fouling any more, and it's a rocket! (anything would feel that way after running on 2 cylinders!!!!!!!)

well i havent touched my sled for a couple days i hurt my back. i was riding across a lake and i had never been on this part of it. i was following a friend and there was a plowd road across. you know on a lake everything looks the same well i went a good 30 ft in air. :augen41: wasnt fun i wanted to kill my friend for not tellin me about it.

how fast does your sled go?
i hit 115 on the ice and 110 on the trail and its not running right it wont shift to last gear to top end. i can side by with an srx till top end then they blow by me.

Haven't been out on it sice I fixed it!! We got rain today, snow Saturday.

Going out Sunday I'll let you know what it'll do than.

BTW do you still call him a friend?

If you get that Mach dialed in, you'll be hanging with F7's all day long. There's alot of potential in the Rotax 700 triple.

Yeah, those xc500's were pretty quick til about 90mph. After 95, there pretty much all done.

doo-rider let me know how it goes give me something to compare mine too.

and yeah that guy still my friend but he hit it too he had forgot about it.

mtrsprt im goin to clean out my rave and get a new belt see if it helps.


i have a friend whos dad owns the cat dealer around here and he just keeps saying

those f7's are the fastest things on the snow.

i wish i could shut him up.

he has an f6 and when we raced my sled spins too much on the ice and he would too

far ahed of me on the run for me to go by him i can catch up to him but run outta

room to go by where we race. i dont it stops spinning till like 60 mph.

i have 96 brand new carbide but they the cheapest one i cold find from woodies.

I WONT DO THAT AGAIN!!

With as much track spin as you have it seems obvious you need to get the numbers up to 144/168 at min. I'm running a 02 800 MXZX and have 192 Woodys , 1.075 length in it. Believe me if you come out of the hole with just enough throttle to hook it up then roll on into it smooth but hard it will go by your buddies with skis held high.

For your carb issue. I'd take it to a doo man who is known for tweaking them in. I have seem the same sleds tuned by two different guys and the one who has his carbs syncro'd the best far and away runs better.

keep the rubberside down.................mps

i agree i need more studs.

i used to have 144 but i wanted to try somthing different im sorry i did.
i just gonna go get more.

as far as my carbs yeah they to be syncro'd but im gonna do what i can befor i take it to a dealer.

i have had bad luck takin it to other people but i havent tried the dealer yet.

i have got it goin alot better since i started playin around but its still not up to its full potential.

I'll let you know, tonight and tomorrow = 13-14" of snow! about time!

yeah were gettin some snow too.

i just went and got a belt ready to go see what its gonna do.

Do not be afraid to run 192 studs in the Mach 1. A well running Mach 1 will make close to 145hp on a good day, and boats loads of torque. As long as you can hook up, you will be suprise how well you can hang with an F7 out fo the hole, and then pull away from him after about 70-80mph.

Make sure the new belt is for your sled. Run BR9ECS plugs, to eliminate a missfire issue the rotax triples can have when the gap is too large. To sync your carbs yourself, it is easy. Take the airbox off, and using a mirror, check to see if all three carb slides clear the bores at wide open. No part of the slide should be hanging in the bore. Set each one idividually so that they all clear the bores. Then check to see that they clear the bores at the same time, by letting the throttle closed a bit, until with the mirror, you can just see the cutaway side of the slide clear thebore. Check to be sure with each carb slide, the cutaway clears the airbox side of the carb at the same time. Then close the throttle, and just start to open the carbs, you should feel all three start to move at the same time. Then check the oil pump adjustment, as it will change. The line on the pump arm and body should line up when you take the slack out of the cables, but before the slides start to move. Then pick one carb, turn the idle screw all the way in, and count the number of turns. Turn it back out the same amount, and set the other two the same number of turns out. Start the sled and set the idle to 1800 rpm. Once you install the airbox, you may have to turn the idle up some more, just turn each idle screw in equal amounts. If your idle is too low, the tach will jump around as well. Setting the idle to 15-2000 rpm, will help keep the plugs clean. On triples, I like 1800 idle when the engine is warm.

That syncronizing thing sounds simple. Thanks.

I like mine around 2000 rpm's @ idle, you are right below this too far the tach on mine just wants to go to zero!

From what I've seen on the lake the F-cats aren't winning a lot at all!!!

yeah thanks for carb tip thats another thing i can do tomorrow.

i like mine 2000 too.

doesnt load up as much.

my track is patterned out for 144 im just going to the rest of the picks to fill the other holes.

cleaned out my rave and put a knew belt

BIG DIFFERENCE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

brought the clickers up one and it was even better i didnt get to try it after but my dad took it and scared himself, used to that old xlt.

next im gonna set the carbs.

shes slowly comin around.

Glad to hear.

Say bye bye to those F-Cats :augen41:

I'm going out in about 2 hours, we are unloading @ the lake, let you know what mine has in her

I wanna know...I wanna know!!!!! you going to let her rip for 2500'??

yeah i wanna know.

took her out taday for one run on the rail road bed. i love the trails around hear

------------------- straight

she ran good 95 in about 1000 ft. mayby a little more.

the only prob i got is after that she dont pick up real fast but then again on the trails its not really going to. but i hit 105 in about 2000ft. i dunno if thats good- bad.

my dads xlt would only do 75.

Well much to my surprise it was a snow storm up there, I couldnt see 4 feet ahead of me! However I did get it up to 95mph in a short distance. It had lots left, but I dont like going too too fast blindly into a wall of white! Also there was a few drifts that were on the lake from the snow. I am still impressed, next time when I can see, ill see what it has got and ill measure out the lake.

Oh, that pro X didnt have a sweet chance of staying with this doo. :argue:

i raced a pro x 800 and they are shit!!

even on take off he couldnt pull away.

but im glad to hear your sled is goin good.

im gonna take mine to the lake soon and try her out. but i think i can still get a bit more outta her. im gonna keep playin.
i got more picks to put in my track.

how many do you have in yours?

In 2003 the pro X 800 was SLOW! My brothers 600 has V force 3 reeds, heads and a sportech clutch kit.

The 800 we ride with has a list of mods waaaaay too long to list and it still isn't as fast as it should be. but pretty quick.

My track isn't studded.................yet. when I doo it'll be 120 or 144 down the middle. I mostly want it for safety in late winter when the trails get a little icy.

On a clear day ill see how fast I can get her going, lake is pretty long. May even race a few sleds. The thing is that ANY sled on the lake is built to the hills, and the first thing they say when you line up against them is ITS ALL STOCK! BS!! Thats why I smell race fuel when you go by!

Good luck on the lake, is it still bare ours all have a foot or two of snow cover.

OK guys, listen up.............1. dis-assemble and clean the driven clutch.That means remove the helix,etc.RE-assemble and set pre-load to fact. specs or 14-18 lbes pre -load.
2.dis-assemble and REPLACE the primary clutch spring.Have it done if you dont know how to do it yourself.Use the OEM spring calibration.Ste the clickers on #3.
3. hAVE FUN.


old sLED hEAD

This should be done every year, or at least every second year. Springs loose tention sitting over the spring summer and fall.

you need to stud your track if your gonna race.

we have snow on our lake but they plow a strip for the sleds to race on.

I already took my rear clutch all apart and cleaned it.

i got it running really good just not quite hittin top end, i dont think its shifting to the last gear.

I cant keep the front end on the ground anymore but after 105 it seems like its all played out. but i havent tried since i did the last job to it.

We have enough snow right now that you don't need studs. But I will put 120 or 144 up the middle when the trails ice later on in the season. (our season just got good last weekend! :banghead: )

yeah ours just good like the middle of last month its sucked.

yeah on the snow picks dont help a whole.

the snow total is down evrywhere and it sucks!!!!

i dont have a powder sled but i do occacionally go in the deep snow and there isnt as much as you would like there is still like 3ft but when your jumping the usuall 5 if alot softer.

hey its either been snowing too hard too warm or too cold here this week to ride.
its all f**ked up the weather is weird the suns shining and its snowing at the same time.

tryin to go to the lake this weekend. see what my sled is gonna act like.

doo-rider you get a chance to hammer on it?

if you get your past 115, LET ME KNOW PLEASE!!

i have a friend with a clutched srx talkin up a storm this is the same guy i stayed side by side with. he said his throttle position sensor was wack. i think he is full of it but i cant get him to line up again just keeps talkin. :frech32:

Not to top speed, it was storming so hard that day I couldn't see 2 feet ahead of me coming down the lake! Going out Sunday again and if it's not a freak storm i'll see what I can doo (i'll have to convert to mph of course!!) 1.6km/h = 1 mph

good deal.

btw what is your sled tachin now?

i am goin to try and go out tonight.
all depending if i can get somone to go with me.

i wanna get it out

i havent rode all week and im twitchin :lol2:

Haven't rode it yet after all the servicing and adjustments I made.

Hopefully it will be in the 8200-8400 range.

mine is tachin ~8300.

1 day to ride time

tried mine last night and it was only tachin 8000 and seemed like it was slack on power i dunno if its because it was warm or i have a weak coil or bad plug wires or what but it sounded like it was missfireing at idle and low rpm.

then i also noticed it was running hot i ran thru the powder and shut it off.

went back about an hour later and pushed the plug wires in the boots to make sure they didnt come out and it started and ran fine but it wasnt over heating anymore, but it still sounded rough at idle and low rpm almost like a misfire.



weird SH*T

i tried mine at 8300 and pulled good but i turned it up to 8500 and seems like its still making power.

i havent figured out how hight you can go befor it stops making power.

i think yours would still pull after 8300 too.

they said at my dealer its only suppose to run 8300, but i get more out of it past that.