I purchased a AC 300 4x4 2005 In August so 4 months ago. I love the machine but being that the colder weather is here it didnt want to stay running, wouldnt idle would backfire etc. I didnt want to mess with it cause its still under warrenty, so I took it to the dealer ship where I purchased it. The following day I went to pick it up and was told that there was a $70.00 charge. I was like hmm what about warrenty? they proceeded to tell me that it was in need of a carb adjustment as it was setup for Summer weather. And that they now have set it up for cold weather. I had a 1991 Yamaha and had never had to readjust the carb for summer/winter. Anyways they never did charge me cause I bitched at them that hey I paid like 7000.00 for this bike and had to push it into ur shop. They also told me that I should bring the bike back in the spring for another carb adjustment for summer weather.(for a price of $70.00 for labour) Is this a bunch of SH*T? or is this the standard procedure for an AC 300 [img]i/expressions/face-icon-small-sad.gif[/img]

 

First off, I would find another dealer. Explain to him the problem you are having and how the other dealer is treating you. If that doesn't help contact Arctic Cat. You are aware that there is an idle speed adjustment that you can make yourself? Look on page 138 of your owner's manual. The cold weather will lower the idle speed and you may find that all you need to do is twist the **** to solve your problem. In the spring back the speed back down again,

 

Bear 46/70 is right. Find another dealer. This sounds like somthing the dip s%*ts at Bass Pro would tell you. I had this same problem with both of my 300s, (back fireing ect.). I changed the pilot jet adjustment to 3.5 turns from bottomed out and this helped alot. It was also a little rich on top end so I went from a 135 main jet to a 130 and that fix that problem. This engine is also very unforgiving when the valves get a little lose. But thats after a lot of miles. I use a 120 main jet when I ride in Co. Other than that I dont change anything for year around riding. The 300 is a very good bike if you can get this cold weather backfiring taken care off. You may what to do a search on this forum as to your problem. It has a lot of good info and has been very helpfull to a lot of us Im sure.

 

Thank you both for the reply, it still seems to be a bit outta wack but atleast will start and for the most part stay running. I'm wondering if someone would know where I could find a service manual for this bike. checked out ebay they have some on there but would the dealer carry such a beast? the CD version would be good. thanks again for the info
IcZ

 

I got a paper manual for my 2001 AC 250 and another paper one for the 2005 AC400 from my dealer. They're not cheap, but I like a manual to travel out to the machine in my shop with me.

 

I was looking for some help, too - it's great to find this forum! We have a 500 that started to run very poorly last weekend in single digit temps while pushing snow. I removed the carb and cleaned it, finding a chunk of plastic in the jet. In disassembly, I also removed the pilot jet which was at 1.5 turns from bottom. The exhaust is now showing red, indicating a lean condition. Maybe I miscounted and the adjustment should be more? Any other ideas?

 

its the damn suzuki carb! i have a kingquad 300 and i have had a million and one carb problems.

as for your dealer, tell him to shuv it and find a new one.


Fred

 

Suzuki doesn'y make any carbs. The carbs used over the years have been either a Mikuni or a Keihin. That's on the Suzuki machines and the Arctic Cats. AC has perfered a slightly larger carb (about 2mm bigger throttle bore) than Suzuki on the same engine.

 

I have a 500 auto, has anyone ever had trouble with the bowl drain leaking? I have adjusted the float height and it still drips when the quad is shaken? I think the idiots at the dealer may have over tightened the tapered screw. Any ideas for trouble shooting?

 

I have an 05 300 also and it definately is cold blooded, although I have never had it backfire. What I have difficulty with is it doesn't want to keep idling during warm up after I begin reducing the choke (enrichener). Once warmed up, which can take between 10 and 15 minutes, it runs beatifully no matter how cold it is. Strangely, and maybe someone could give me a clue as to why this happens, I have a much harder time getting it to idle when the weather is damp, say 30 degrees, cloudy, with snow in the air (like it is most of the time when I need to plow with it), than when its 10 degrees, clear and dry. Not being to knowledgable about carburators, I have no idea why that would be. This might sound pretty strange, but I have found a solution. I use a heat gun and blow warm, dry air into the air intake as it's warming up on those damp days and it idles and warms up perfectly. Kind of a strange solution but it beats the frustration of standing there with my thumb on the throttle for 15 minutes until it idles.
By the way, I got my shop manual from Alpha sports.