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By Gwbarm
I got my no spark issue sorted out, got it running on the old aftermarket carb, but it didn't want to take throttle even after cleaned it, didnt really want to waste time on it, so I order a new one which is on its way, so not much to post here, but I wanted to start a new thread. I am stating to clean up the plastics thought I might as well do that while they are off, they were a mess tree sap, bird dropping, mold and what ever. Washed them good and got all off so I could see the oxidation , decided to wetsand with 600 grit waterproof sandpaper, and used Armour All instead of water. I figured it could put some of the moisture back in that was lost from sun exposure.
Working fairly well I will keep going finer on the grit and see if it will polish
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By fyredude
Recently acquired a 99 Polaris Sportsman 335. Spark plugs foul within 45 minutes of operation. Suspect carburation as the problem. Keep reading that it is most likely a plugged pilot jet and needs to be cleaned or adjusted. I have a Mikuni with ID numbers of 33F02A and underneath those there is E812. The problem: there is no pilot adjustment screw. Nothing but a brass plug with a tiny hole where I would have suspected the screw to be. There is no other adjustment other than the idle adjustment screw. How does a person adjust air/fuel mixture on this carb? Thanks for you help.
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By Gwbarm
Just found this on eBay, OEM carb for 2003-06 Yamaha Big Bear, $165.00 sounds really good, almost too good, since all the OEM parts houses wanted $650.00 for them. Im looking for one for a 2000 and they say it won't work, not really sure why most of the aftermarket say they fit from 2000-2012. Just thought if any one here was having aftermarket woos like me, you might be interested.
Genuine Mikuni OEM Carburetor for Yamaha Big Bear 400 03-06 BSR33-P48 | eBay.webarchive
For got to convert the file
Genuine Mikuni OEM Carburetor for Yamaha Big Bear 400 03-06 BSR33-P48 | eBay.pdf
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By WillrogersII
New to tuning carbs and cant seem to figure some stuff out. Need help on understanding a few of these listed items on this service manual for the carb settings. Thanks for the help, By the way its a 1999 Kawasaki Bayou 220 that I am working on.
1- what does the number stamped on the jets mean? MM? Looking at my carb and it has a #30 pilot and a #115main... but the 30 is larger, so i am assuming that this is MM in decimals like .30mm and .115mm so then the 30mm makes since. not sure if my shade tree mechanic logic is correct on this.
2- I know a good reference is 1.5 turns out on the Air/Fuel screw but what is a good starting point for the idle or fuel inlet screw, its the mikuni carb and its this screw is on the side of carb next to where the fuel line goes.
3- Looking at the picture I attached this is a screen shot of the service manual for the bayou 220 and the recommended carb settings. but i dont know what a few of these settings are.
so what is ( Main Jet #115 (CA) #117.5 ) I know this is the sizes for the main jet but which one is for CA and which one is for me here in GA. do I read this a #115 (CA)... meaning the #115 jet if for CA and the 117.5 is else where? or do i read it as (CA) #117.5 or am i splitting hairs even worrying about the 2.5mm difference or should i say .025mm difference if i am thinking about the sizing correctly
4- what is this, Main air jet Ø 1.8, what in the chinese writing is that sign. Google says it means zero. So one what does it mean here for carbs and secondly what do i do with it... Ø1.8 turns? Ø1.8mm? 0-1.8? really confused!
5- Jet Needle 5GN46-2? what is this the type of jet?
6- Needle Jet, O-0? a type of jet? and whats up with (Jet Needle) and (Needle Jet), are they two different pieces to the same piece, do they combine to form one piece?
7- Pilot Air Jet Ø1.2?
8- Also the knock off chinese mikuki carb that came with the wheeler dont have a few of these screw or pilot jets that can be changed out, its just a long skinny pressed fitted brass tube. Thinks some of my google research said something about the fuel for when the choke is on. cant remember what its called on this list. Maybe (starter Jet#45) if thats the case could i drill this tube out with a small drill bit that is the same size at a #45 jet hole? or do I even need to worry about it? the hole does look smaller than a size #45jet hole.
Thanks for all the help and if anyone want to share more than i asked for i would really appreciate it.
Thanks and be safe. Will Rogers II
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By huanchaco
Waiting 3 months for my Ebay order for a Polaris clutch needle bearing down here in Peru. The chinese clutch is doing well without abuse but the ebs one way bearing turned out to be short lived,already sticking and making gear change tricky.
I was wondering if anyone knows the equivalent for this part on SKF, FA*,Timken or other brands? As far as I know the OD is 1 3/4" ID 1 1/2 " and width 1 5/16" , Polaris markets this part as an exclusive product while a cage needle bearing should
be available over the counter for other appliances if you have the right numbers. Unfortunately here in South America all knowledge is lost since the new generation people took over and Chinese junk reigns supreme.
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