I have found a lot of great information on this site, but I have a few issues together.
1. My sled is burning oil at about 20:1
2. It's is extremely hard to pull when cold, the electric start bogs trying to start it. Once it's warm you can pull start it sitting down with one hand and it starts with one pull.
3. It's slow! Compared to my previous SX700( no electric start or reverse) .its much slower to accelerate and tops out slower than my friends 500!
The sled over all appears to be in excellent condition with 20,000 kms. Have checked compression, throttle free play and oil cable adjustment. Any help is appreciated.
1. My sled is burning oil at about 20:1
2. It's is extremely hard to pull when cold, the electric start bogs trying to start it. Once it's warm you can pull start it sitting down with one hand and it starts with one pull.
3. It's slow! Compared to my previous SX700( no electric start or reverse) .its much slower to accelerate and tops out slower than my friends 500!
The sled over all appears to be in excellent condition with 20,000 kms. Have checked compression, throttle free play and oil cable adjustment. Any help is appreciated.
couple questions:
1.) do you have a handlebar riser on the sled?
2.)hard to pull over when cold could simply be from the brand of 2 stroke oil your using, the colder it is outside the thicker the oil is, some cheaper brands are like grease when cold, and make for hard starting. what brand oil are you using in it?
3.) as afar as being slower, what rpms does it read on the tach at wide open?
1.) do you have a handlebar riser on the sled?
2.)hard to pull over when cold could simply be from the brand of 2 stroke oil your using, the colder it is outside the thicker the oil is, some cheaper brands are like grease when cold, and make for hard starting. what brand oil are you using in it?
3.) as afar as being slower, what rpms does it read on the tach at wide open?
The previous owner had put risers on for a short period of time and I removed them after one ride. I put the stock ones back on and adjusted the cables.
I would say the rims at wide open were between 8000 and 8800 rpms
I was using valvoline conventional tcw-3, the same as my other SX. I agree it was harder to pull when cold, but not like this one. Saying that it did only burn about 1 litre for every 50litres of fuel.
I would say the rims at wide open were between 8000 and 8800 rpms
I was using valvoline conventional tcw-3, the same as my other SX. I agree it was harder to pull when cold, but not like this one. Saying that it did only burn about 1 litre for every 50litres of fuel.
I took apart a lot of stuff today. I shortened the oil cable sheath as much possible, but it looks like the oil pump is always a few mm open. I assume this is normal?
Also going to put 142.5 in carb 1 and 140 jets in 2 and 3. Temperature here is rarely lower than -15C at an elevation between 1000 to 1500 ft. Do you think this will help?
Also going to put 142.5 in carb 1 and 140 jets in 2 and 3. Temperature here is rarely lower than -15C at an elevation between 1000 to 1500 ft. Do you think this will help?
Update: Found my oil cable was coming out of the holder at the bottom near the oil pump and getting stuck. Replaced my reeds with Boyesen Power reeds and changed the jets down to 137.5 on carb 1 and 135 on carb 2 and 3. Ran great at -12 degrees Celsius. No excessive oil usage and nice dry tan plugs.
It is still extremely hard to pull when cold so I changed to Shell Advance 2 stroke oil. Still extremely hard to pull when cold.
Any help would be appreciated.
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It is still extremely hard to pull when cold so I changed to Shell Advance 2 stroke oil. Still extremely hard to pull when cold.
Any help would be appreciated.
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goody_700
New member
I'm no expert, but sounds like a clutching/belt problem as far as acceleration is concerned. You should post what it has for clutching in it and see what the experts can figure out for you if it's good or bad. As far as the hard to pull when cold, my sled is kinda the same way, when it's cold, like below 10F, my sled pulls fairly hard too, but I'm used to it and even in extreme cold, it starts in 3-4 pulls at most, been like that for 3 years I've owned it, but can pull with one arm easy to start when warmed up.
Cherrypicker
Member
They are all that way, I ease into the first three or so pulls so that I don't rip some muscles or tendons, or break a rope or something. Once you get it rolling over it gets increasingly easier, sled should light with less than 10 pulls when cold and like yours, will start 1st to second pull when warm. Sounds like the oil consumption thing is straightened out. If you have been using a lot of oil, you may have plugged up your exhaust. I used to clean out 2 stroke motorcycle exhausts with a torch and piece of cable with frayed end chucked into a drill, it definately made a difference. There is a free mod for the stock exhaust, that supposedly gives you an extra 5 hp. Good luck.
I never thought of the pipe. I took it out and cleaned it. I got about a cup of carbon out of it. I don't know if it will make a difference, but it sure feels better to know it's clean! Thanks for the tip.
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Backwoods M Max
New member
You should go back and adjust your oil pump cable to spec now that you know there was a problem with the cable coming out of the housing.
That jetting is very lean for that altitude and that cold. 145/143.8/143.8 is stock for 0-3000' and that's good down to -20f at the higher end of the elevation range, 0f at sea level. You need to rejet that's a time bomb. If you've ever reviewed a plug chart you can be on the lean side of the sweet spot and have plugs appear to be on the rich side, the detail in reading them is very faint from one to the other. I would say that's where you are now. You don't need to be looking at those size jets until you get into the 6000' and above part of the table.
That jetting is very lean for that altitude and that cold. 145/143.8/143.8 is stock for 0-3000' and that's good down to -20f at the higher end of the elevation range, 0f at sea level. You need to rejet that's a time bomb. If you've ever reviewed a plug chart you can be on the lean side of the sweet spot and have plugs appear to be on the rich side, the detail in reading them is very faint from one to the other. I would say that's where you are now. You don't need to be looking at those size jets until you get into the 6000' and above part of the table.
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