Search Results for ‘ext 550’

Hello all, Saved a 1992 550 L/C ext mountain cat From certain death.. previous owners were really hard on it Any way long story short I now have a snowmobile that I’m fixing up and breathing some life back into. I feel so bad for this nice old sled, poor thing has been abused to say the least...

I picked up a 1994 EXT 550 that’s been swapped with a 580 and I’m looking to make it FAN cooled IF possible (sons sled) He’s new to snowmobiles. Can this be done in addition to the liquid cooled. I’m worried about it overheating on him and I do plan on picking up some scratchers. Also it’s...

Hi all! I am new to the snowmobile community to please bare with me. I’ve just purchased a 92 EXT 550 for the winter here in michigan, it runs great for the price I payed and its age. My questions are: Are the two white/clear/plastic jugs/canisters for the 2 stroke injection oil connected...

im in the off season with my 93 ext and i plan on doing a carb switch because my sled was an efi now running dual carb but the carbs i have now seem to be too big, they are 38mm, i can get 2 from a 98 panther 440 the part # is 0770-082 but i cant find out the size. i dont have time to go take a...

Ok have a 93 A/C ext 550 efi. in my book it says nothing about the battery light being on or staying on.. can anyone explain the deal. the battery stays at about 12.20 volts. even after idling and reving it up. thanks

i think i have this posted in the right place im out of other ideas hopefully somebody out their knows a lot more than i do lol i have a 93 ext 550 carb. it will sit and idle all day long but if you try to mash the throttle it bogs bad will not rev up enough to even engage the clutch however if...