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Similar Tagged Content
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By Edgar5656
Looking for a carb for 87 moto4 200. Just bought the machine and it’s got a Chinese one that’s not working right even after I cleaned it out. Looking for the original mikuni vm22sf.
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By Steve Bethany Poston
I just got an old YFM200DX Moto 4 and upon checking the oil in the rear differential I took out I assume the fill plug and it fished out old nasty oil. I plan on flushing the oil and replacing but was wanting to make sure if you drain bottom plug and just fill up to the check plug. Only thing I can think of someone filled it up by the breather on top? Plan on unhooking the hose and blowing it out tomorrow. I also do not have a service manual yet. Also right now the diff vent hose just goes up under the tank to nothing. Does it plug into back hole in the air box? Thanks
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By amharrison24
i have a 91 moto 4 100. has electric start only. for as long as i could remember we have always pushed start it. after riding for while you shut it off. you are able to hit the start button and it will start right up. anyone know where i should start with fixing this issue? im fixing it up for my niece. thank you in advance.
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By Diesel Dave
Hi there, I am a new member and have never used a forum before. I own a 250 moto 4, has smoked since I got it.
Oil consumption has increased, I removed the crank case breather pipe and have a catch can under frame at front. Smoke has not changed. also after more than 20 hrs use during lock down there is a very small amount of oil come out the breather.
Compression seems very high, engine turns not too bad if stopped for up to 20 mins but much more than that it is difficult to turn engine past tdc. (poss almost hydrolocked?) if left for a couple of hours or more it then turns over easier. Also if spark plug is removed. I would have expected oil to come out when turning engine with spark plug out.
I suspect oil is getting down valve guides? smoke is worst during warm up. The starter motor has not worked since before I owned it and I have modified pull start as the pressure on it was causing problems. I am about to check valve clearances this morning before I get going. I do not want to dismantle while lock down is on as I am using it daily.
Any help would be greatly appreciated, Dave
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By Ted Craig
Hello, i have many questions but ill start with a few.
1. The yamaha 350 from 89ish- 93ish has this dual actuating throttle cable assembly. I can not find a replacement cable for it. One cable had rusted and broke. Do i need to update to the new carb style that has the single cable? If so this sucks because i just cleaned this one.
2. Has anyone found replacement struts/coil-overs for these moto 4s?
3. What cause oil residue in the starter gear housing? Is it normal?
4. Does anyone have a service manual?
I hope to get answers to this stuff. Im the kind of guy that researches and never Have the opportunity to help people. Hopefully this thread will do just that.
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Similar Topics
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By AgmansGrizzly
Hello everyone,
Im new here, this is my first post and Im trying to figure out how evrything works on this site so I please let me know if Im doing anything wrong.
I have a couple Yamaha's but this post is in regards to my 02 Grizzly 660, I have an electrical draw somewhere that is taking my new battery down rather quickly. I have tried to locate any short by checking each circuit but was not able to locate it that way. Im installing a battery cut off switch which brings me to my first question, dont these switches usually go on the Negative terminal?
My next question is, can anyone tell me if this year and model has any history of electrical shorts that might help me locate the culprit? Any help would be greatly appreciated!
Finally, Im looking forward to being a member of this site and hopefully helping others as well as learning some things myself, so greetings to all!
Best wishes to everyone!
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By AKMichael
Hello All,
I have a 1999 Yamaha Big Bear 350 4x4 trying to get fixed up so my grandson can go out in the woods with me.
We have owned it over 10 years. It got harder to start, until it finally would not. Replaced the carb. Right afterwards, it started and ran nicely, but after turning it off, would not restart. Tonight I used starting fluid and ran, then died. Adjusted the idle up a little, used more starting fluid and ran great. It idled about 15 minutes. Turned it off, and restarted. Ran it around the yard about 5 minutes. Turned it off, and would not restart.
Any ideas or suggestions would be greatly appreciated!
Thank you.
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By Asen_77
Hi All,
My name is Asen and I am from Eastern Europe, Bulgaria. Riding a Yamaha Raptor 700R and this is my first Quad wanted for a vey long time :)
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By mike91
I’m just wondering what year bike i got? it seems the vin has been rubbed off i got it from a auction here in Australia engine starts but seems has a dirty carb wont idle well
and also has a problem I put it in gear and makes a grinding noise but does not move it the neutral light goes out but then when I change gear it grinds more in the higher gears as well I’m guessing the differential is stuffed so wanting to buy new part for it will start the pull down next week
this is the first bike I have worked on used to dealing with cars
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By Randel1
I'm having a problem getting a CDI unit that works. The parts list calls for a 4XE-85540-00-00 CDI unit. The one currently on the ATV works but there seems to be a problem with the spark advance curve. It will idle fine an rev. to about 1.5K then starts bogging down sputtering, popping and basically running poorly. If you can get it above 2200 RPM it runs better. I have ordered and returned about 5 replacement modules that will not work at all. The unit currently on the bike has no part numbers or identification other than a Mitisibuchi logo. I am wondering if anyone else has experienced similar problems with replacement CDI's and if so what is the fix? So far I have not found a replacement CDI that will supply an pulse to the Ignition coil.
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