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I have a 1999 Yamaha Big Bear 350 4X4 and I need to rebuild the carb. I have the dual-cable throttle model and I'm having a terrible time finding the correct kit for it. I'm not opposed to replacing it, but the only ones I'm seeing do not have the dual cable throttle system. Any help would be greatly appreciated.
Jay in WI
P.S. I can send pictures if necessary.
I was reading another forum recently about fuel leaks and possibility of fire happening. Reminded me of an incident I had a few years ago while working at a Can Am dealership. The quad was a stolen & recovered Outlander 650 that had been tampered with. These quads have an electronic safety system, similar to their DESS system on the sleds. You cannot bypass the key switch and get spark without a computer with factory software. Anyway, I was trying to determine what was damaged since the thief had attempted to hot wire various electronic parts. I got all the extra wires removed and things looked back to stock. Pulled the spark plugs and was going to check for ignition and if the starter still worked. Well, they both worked alright and guess what - the cylinder was flooded with fuel! Instant flames with gas spraying all over...great!! I managed to use my hands to put out the fire, good thing I had on gloves (but choked they were ruined of course, haha). Seems it's possible to flood an engine with efi when you put power straight to the injectors, doh! As in much of life, you cannot take things for granted (I'd only seen carbs flood like that). And even though it had spark, the quad still needed a new ECM to run - that part alone was $1200. So lets hear your stories, crazy stuff happens every day I'm sure.
picked up this pos bike for $80 not running. took it home, cleaned the carb and bypassed the fuse- ran great (other than the rev limiter- those things are so stupid) Then one day out of the blue it starts flooding on cold startup and wont idle cold, but idles to fast warm. (too fast being about half throttle speed heh). I tried a new carb ($10) and new sp. new carb wouldnt make it run except on choke and then it was gushing white smoke. I had better things to do with my time so I parked it in a shed and used it for a work bench for a while... this last weekend, I wanted to take it along with the sportman to a mens retreat to let the younger boys have some fun on it-- took about 30mins to pull all the crap I had accumulated on it and then rolled it down to my workshop, put the old carb back on after adjusting the needle clip up two notches (leaner) and threw it back on the bike. Will turn over, but no fire. I didnt have time to check sp that day but just wanted some incite on what could be wrong with this quad (if it even qualifies as being called that)
By Frank Angerano
So I decided to pick up a small trailer if I could get one for the right price. I found this one for a few hundred bucks on Craig’s list. It is a galvanized trailer which is exactly what I was looking for. The wood was shot and needed some minor repairs which I could care less about as long as the chassis was good.
I striped it down and put a new deck on. I had some vinyl realtree graphics that I had laying around so I added them to the fenders which I think worked out well. Very happy with this little guy.
I'm having the iron workers at my jobmake me up a few lightweight side rails that will have a 22 degree bend in them to accommodate the tires that slightly hang over the edge and will incorporate some tie down points as well.
By Dra O
posted a while back - it was running at one point - I have all the plastic shroud off - it's down to frame and engine now
-fuel pump: when line from petcock is attached, no fuel comes out other side to carb; the line to the carb is open (can blow through it); I thought when I cranked engine that the pump would spit out fuel on other side but it does not; I removed fuel pump and opened it up - diaphragm looks good - but internal areas had lotsa calcification build up - I cleaned this out and dried it good - the clear plastic pieces (?diaphragms) aren't broken - the spring w/ steel ball on end moves freely; am putting it back on tomorrow; but can anyone answer about the pump? isn't it supposed to pump fuel through it... to other side... to carb? puzzling
-along with fuel pump: I replaced petcock 3 weeks ago (gas tank had rusty fuel in bottom - cleaned it out prior to new petcock); when I turn petcock arrow NOT to on or reserve, fuel comes out of line; when I turn it to on or reserve, fuel doesn't come out; puzzling
-I don't know what's on back of fuel pump - it's a valve that has a hose coming out of it - looks like it goes to engine/carb - I haven't traced this out yet - what is it?
-can squirt gas on air filter and engine will run for 2-3 seconds then stop - fuel in top of carb (under diaphragm) does same
-it likely needs carb rebuild - will get to this - but something isn't allowing fuel to get from fuel pump to carb
-I THINK it has a mikuni model x carb - diaphragm is ID 26mm OD 68mm - hard to find inexpensive diaphragm, I guess because it's a model x
-last thing - I replaced solenoid due to old one clicking; I HAVE to be charging the battery or it won't start/turn over - battery just goes dead; but if charging, it'll turn over nicely; i'm guessing it's a bad battery
-any help appreciated - I've never owned an ATV before - inherited this beast from grandparent in-law
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STREET LEGAL - ONE OF A KIND HARLEY DAVIDSON 4-WHEELER $9,500 OBO Sporster 883 bored to 1200cc built into a Street Legal Licensed and Insured 4-Wheeler. It has 400ex front end, 250r Rear end. All chromed out with new black gloss paint. I have a $500 Dakota Digital Speedometer to go with it (needs installed). I also have an extra rear gear and extra set of off-road mud tires and rims. Brakes need to be adjusted, and there's a few other touch ups that will place it into show quality. I haven't started it in a while. Ran Great last run. This bike has over $20k invested in work and time. It will go about 120 mph or more. With the other gear it will go about 60 mph. It rides great on and off road. It brings trophies and turns heads at shows. Shoot me a message or offer if interested. (May entertain trades). I will entertain any offers. This is your only chance to own a Street Legal 4 wheeler. Currently titles and registered in KY.
these are what i have in my collection ... always looking for more
1985 - 1990 Suzuki LT230 & LT250 Service Manual
1987 - 1998 Suzuki Quad Runner 250 & King Quad 280 Service Manual
1987 - 2006 Suzuki LT80 Service Manual
1987 Suzuki LT500R Quadzilla Service Manual
1988 - 1992 Suzuki LT250R Porting Instruction
1988 - 1992 Suzuki LT250R Quadracer Service Manual
1988 - 1992 Suzuki LT250R Tuning Guide Instruction
1999 - 2004 Suzuki King Quad 300 Service Manual
2002 - 2007 Suzuki 500LTA Service Manual
2002 - 2009 Suzuki LTF250 Ozark Service Manual
2003 Suzuki LTZ400 Service Manual
2006 Suzuki 50LTZ Quad Sport Service Manual
2004 Suzuki 250LTZ Quad Sport Service Manual
2005 Suzuki LTA700 King Quad Service Manual
2007 Suzuki 90LTZ Quad Sport Service Manual
2008 Suzuki 400FLTF King Quad Service Manual
2008 Suzuki 750 King Quad Service Manual
2009 Suzuki 400LTZ Quad Sport Service Manual
ALSO CHECK SUZUKI ATV SERVICE MANUAL DOWNLOADS
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By Aj Hurtibise
I have a 2000 Honda trx90 I got from a buddy for free he said it needed a carb so I put his old carb back on it to try to get something out of it and it does not have any Spark. I already replaced the ignition coil I don't know much about four wheelers but I am a technician so I do know my way around a motor any electrical help would be wonderful or specs I don't have the best digital multimeter either.
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