Just got off the phone with a friend of mine who is a Polaris dealer in a smaller town near the Fargo/ Moorehead area. He has a 121 Dragon with 144 switchback suspension, He just got back from a 5 day sled trip, and this is the first time I have talked to him at length and this is what he told me he has done with his Dragon. Now note this is just what he told me so I just took him for his word. He claims to have had 3 ECU remaps all of which were an experimental supposed fix. He said Polairs is still stalled by the EPA for the official release of the reflash thats going to be consumer issued. He claimed however that all of the reflashes hes had done to his sled didnt do a damn thing and the sled still ran bad...I told him about how mine runs and he wasnt very happy he said it seems like there are two completely different sleds. He said your lucky you got one of the good running Dragons. He also said that the reflashes hes tried all had different mappings and about all it did was move the stall to a differnt rpm range.... He said this leads him to belive that the ECU isnt 100 percent of the problem with the bad running Dragons. He thinks most of the problem may be related to a sensor somewhere that is sending out the wrong signal or else a problem with the fuel injectors.

He also stated that by going to a heavier weight in his primary clutch, wouldnt tell me how heavy.... im guessing 10-68's or 10-66's, He made the sled pull harder outta the whole by helping to elimiate the backshift prolblem that he was having. He also went as far as to claim that by just changing his weights and making the motor pull at big harder his sled now runs between 125 and 135 degrees. Now remember I cannot make a claim to this this is just what he told me. Take it as what you will

I had heard something about crank sensors, also possibly stators also. I too have installed heavier weights and my engine temperature did not budge from it's favorite temperature which was and was is the key word 104 degrees. I have since got my engine temperature up to 125+ degrees. Call me crazy, but if Polaris has one Dragon running really well and one not, why don't they contact people who have good running Dragons (from the dealer that is) and bad running Dragons, find out what is different and do the samething to the bad running Dragons as what is done to the good running Dragons. Problem solved?

You would think it would be that easy wouldnt you.... But doesnt it seem like Polaris is in much of a hurry to fix this issue since it does not, in fact, effect every single Dragon???? At frist I didnt agree with Weantright and RichSKS700, but now the more I think about it, I think they arent far from the truth. I really belive that If Polaris did care they would have had some form of contact or made some kind of an effort to post something saying that look guys hang on we are working to fix this problem and are aware of it. Isnt that what a good business does, take care of there customers. In my opinion your only as strong as your worst product your produce. I think there is no hurry for a solution since there are enough good running dragons to make it look like the reason these sleds run bad is the fault of the dealership where they were bought or the owner themsleves.. Hopefully for you guys this will get resolved but its beginning to look more and more like a solution is going to have to come from aftermarket and void your warranty.

I totally agree with you on this. I am going to my dealer shortly, fortunately for me I have a very good dealer. I will be asking them to get a poll going between good running Dragons and bad ones and send the info to somebody important at Polaris and see if this may work or not.

You gotta start wondering one thing: The 05 900's had this problem, the 06 600's had this problem and now the 07 Dragons. There were fast ones and then poor performing ones. Maybe Poo's stacked tolerances on these machines are too far out on their production sleds? The fact that they were released around Xmas time tells me they were rushed into production. Just like the 900 and 600's you guys may never find the cause of the problem. I've got a 600 from last year that flew out of the crate and now won't do more than 85 mph, nothing's changed. My 900 did the same thing. I finally gave up and bought a yammi and gave my 14 year old daughter my 06 Dragon, it's a slug but good for her, beats buying a newer 500 fan or 440 becasue that's how it performs anyway. I'm done screwing with it.

your sig says its a 660.... what all did you do to it????

Thanks for the info, I will talk to my dealer on Monday and see what he says. I HOPE Polaris works this out. It would be to bad for Poo if they didn't. I gotta still think positive.

I installed the SLP 660 kit. It went good for exactly one week and then the performance fell off. I can't get the top end back and nothing has worked, clutching, jetting, you name it. I've got about 2300 miles on this chassis and it's doing the same thing my 900 did. Fast for the first 1500 miles or so and then slowly loses performance. The sled goes pretty good on ice but on hardpack or snow it won't go. Almost like when there's a load on the chassis it goes out of square. The other 2 Fusions in my group have the exact same problem. Every weekend one of them won't rev either.

Mine as a bad crank sensor, have the code in memory ten time in 100 milles. The sensor come with the stator. The part arrive Wednesday

do the dragons have the same motor as the 06 700 CFIs?

No,06 is a big block and 07 is a small block

DanXC, thanks much for the informative post on the bad crank sensor & stator plate!
Please let us know if the new stator plate assembly with a crank sensor improved the run-ability, top speed gas MPG & etc.

In the past when trouble shooting heavy equipment transmission electronic controller problems, many times the mag pick up was too far from the flywheel teeth even when set per spec. I would suggest to the service manger to turn in mag pick up in until it slowed down the 300 HP engine, back off 1/2 turn, solved many problems. Also just cleaning the connector at mag pick up correct problems at times.

In Dec my dealer erased a crank sensor error code from my 700 Dragon, a friend’s Dragon & a 600CFI IQ. The 600 CFI IQ’s PTO spark plug is very very lean, looks like it’s close to burn down?

This Saturday & Sunday my Dragon started to run excellent & fast. After I replace two fouled spark plugs, only fouled approx 28 spark plugs in 840 miles????
The spark plugs are now dark brown, not wet & black as they have been since Dec, Jan & Feb??????
Thanks Much; Rich

My 06 755 fusion also had this problem with the spark plugs fouling. My dealer found the problem on another fusion 755 he had worked on. It ended up being over pressurized. Fuel pump pressure was off the scale on his gauge. He replaced the pump, which means the whole tank too. No problem now. Very light brown plug color. Fuel economy come up slightly also.

Found this on another site... still no word from Polaris for him makes you wonder if a fix will ever come.


i have a 121 dragon with 180 miles on it 3 tanks of gas and 12 spark plugs 3/4 gallon of oil a ,clutch that sticks , i have had it at the dealers twice to get fixed and nothing has been done except fuel vaporizer thing in. These dealers within a 60 miles ,have not had any experince with this sleds and have no ideas how to get this sled running right. The main problem is that it fouls out spark plugs all the time. The dealer told me they contacted polaris and there working on the fix, that doesnt do me any good at all, i need a sled to ride now. I shouldnt have to put up with a sled that doesnt run. 9000$ polaris should be doing some thing for me like atleast buy me plugs, and fixing the freaking sled now, I only get a couple weekends to ride and now i have to put up with a junk 9000$ dollar sled. IF this problem doesnt get fixed buy next weekend i will be contacting a lawer. I have owned polaris sleds all my life <I am 30 and been riding since i was 12> This is the last time you will ever get my money if this problem doesnt get fixed soon. i have owned this sled about a month and I have yet to make a day of rideing with it with out problems. I would even like a sled for a loaner till it gets fixed right. but i can imagine your answer. Every time i talk to you <polaris> you tell me to talk to the dealers well my dealer doesnt have the answers . SO what is next except to call a lawer. I would like a replay from you eighter on here or a phone call ... I think polaris owes me that at least.. or call my dealer and give him better answers and a time table to get it fixed . the winter is comming to a end and i would like to ride my sled at least once and not have to put plugs in.. not to mention the clutch that sticks and the motor revs up to 8600 hunred. that cant be good for the motor. The way to get them unstuck is to hammer on the brakes and then they will unstick some times.... My name is JAKE i live in MONDOVI WISCONSIN AND MY DEALER IS MDMA IN MONDOVI WIS.

i will be posting in allot <SNOW WEST AND HERE> of sites very soon of this situation if it doesnt get fixed soon. i feel like i have be gettting jerked around from polaris they know theres a problem and arent doing anything about it.... ANd i get stuck with the a junk sled and polaris ends up with 9000 $ of my hard earned money...

very dissapointed DRAGON owner,__ JAKE , MONDOVI wisconsin, MDMA IS THE DEALER IN mondovi wisconsin and if you need vin #S i will give them to you.[font="Arial Black"][/font]

Ok! me too has this problem, 1700 miles on it. use to fall plugs when cold. Now fall plugs when running at
slow speed or after a hi rev moment. Temperature run not more then 102 to 106 degre

The sled is at the dealer for second time will see next week-end

P.S vapor/fuel has been done + they adjust oil pump now 50/1, still fouls plugs

My Dragon runs great, it has since day 1. I have no comlaints at all, other than the fact that I wish it should be a 136 instead of a 121. Has anyone extended there Dragons Yet????