97 Xpress 300 - Carburetor Setting - Service manual

Nandy

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Apr 10, 2004
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Im trying to find the Service manual for this 97 atv. So far I could only find a hayes book and I am not sure that is really what I need. Any help will be appreciated.

I have taken a few photos to see if help y'all help me. Sorry about the picture quality but it was raining, windy and I was working under a tarp. Keep in mind that this unit has been set up to work without the oil injector so that might account for some of the lost hoses on the carb. I cant find a book yet and since I want to put it together tomorrow I will rely in y'alls help.

Anyway, the previous owner had jacked up this carb big time. All the settings are wrong. I cant even believe it worked yesterday evening, but it did run for a bit and we had some fun. The problem it had when I went to see it before last night was that I would not start. After the po "adjusted" it then it will start but will randomly accelerate. When I went to take the carb out I saw that he had adjusted the cable for the thortle valve so the valve was way open, to the point that the valve will no touch the throttle adjust screw. The main jet was clogged so that accounts for why it would work better on choke and will sometimes accelerate on its own. The float also was not parallel to the carb body as in most carbs.

That was then, this is now.
Cleaned the carb and every jet, hole and cavity. Now I need to adjust it for checking tomorrow.
Adjust the air needle to 1.5 turns.
I will think I need to adjust the throttle cable so the valve will fully seat, then after adjusting the throttle screw I will then adjust the throttle cable so there is not much play. ( is that correct?)


The carb has port for 5 hoses. I know what 1 is for, the other are just guesses or simply no idea what they are. I wonder if someone can help me identify them.
The easy hose to id is the gas intake hose.

Here is a pic of the carb installed.

utf-8BSU1HMDAwMTgtMjAxMDAyMjQtMTAzN.jpg


The air filter is supposed to be to the left. You can see the throttle and choke cables. There is a hose connected to one port at the bottom and top of the picture. no other port had a hose on it.
Can anyone tell me what those 2 ports are for and where are they supposed to be connected? I know where the hoses go to, but Im not sure what purposed they serve or if they are even connected properly.

Next picture is with the carb removed:

IMG00022-20100224-1052.jpg


You can see better where that hose to the left (in the previous pic was at the bottom) Is connected. I will post now a picture where the other hose is heading.

IMG00020-20100224-1052.jpg


That is right under the muffler looks like going to the transmission body.

The next picture shows the black plastic port. It had a broken hose in just the tip. I guess this is the hose where the injector went to but no telling...

utf-8BSU1HMDAwMjYtMjAxMDAyMjQtMTExN.jpg


The last port is at the bottom and I am sure it is a overflow but I wonder how should it be connected.

utf-8BSU1HMDAwMjQtMjAxMDAyMjQtMTExN.jpg


Thanks for any help you can provide.
 

Summer Fun

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Mar 2, 2002
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2,251
Re: 97 Xpress 300 - Carburetor Setting - Service manual

They are the over flow tubes for gas to drain from the carb
If the float sticks. :)
 

rbh

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Re: 97 Xpress 300 - Carburetor Setting - Service manual

They are the over flow tubes for gas to drain from the carb
If the float sticks. :)


Those little mikunis, are great, what size is that one 22/24 mm?, did you pull the float bowl off and clean it out as well as check the float?
I pulled the old piece of ##$% tillitson off my sled and replaced it with a 38mm (its feeding an 640cc rotax on an old twin track alpine), it was a night and day difference.
 
Last edited:

Nandy

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Apr 10, 2004
Messages
2,145
Re: 97 Xpress 300 - Carburetor Setting - Service manual

I adjusted the carb as I stated before and the atv runs great. I had to do a little adjustment after the initial setup. I appreciate the help. Short video but the sounds on my blackberry is poor.

 

Nandy

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Apr 10, 2004
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2,145
Re: 97 Xpress 300 - Carburetor Setting - Service manual

I actually went to the polaris store and they looked the manual up. The price is $135.00!!!! That is crazy, I spent $300.00 on buying the atv, the book is almost half the price. They guy there also told me that what I get is not a book like hayes, what I get is a book made of photocopies of their manuals.... I was shocked... I would expect that from a ebay $4 dollar manual but not from polaris $135.00 manual. I have found many manuals copies for most of my toys online but I dont seem to find this one. If anyone knows where I can find it let me know. I made a little of small talk with the mechanic to see if he would just make me a copy of his but he said he never worked on one and did not have one there. I dont blame the guy... $135 is out of the question. The hayes book that covers my model covers about 12 years and about 7 types of atv's so Im sure is not too detailed. I might end up getting that one a few months down the road but not just yet.
 
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