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1991 Yamaha YMF100 Moto 4 Electric Start Issue
By
amharrison24, in Yamaha ATV Forum
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Similar Topics
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By Trent Finnessey
So I have a 2000 Honda 400ex, and it won’t start when it’s in gear obviously when I pull the clutch in..... it’s very annoying!! And idk if this is like a safety feature or something.....🤷♂️ If anyone know why this is lmk plz, thanks
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By dirtjunkie85
Just wanted everyones opinon on riding glove I do long desert races and none of the glove i have wore seem to hold up really good they always wear fast and dont do much to prevent blisters any advice thanks.
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By Steven Urban
First time using this forum. Owned a Kawasaki dirt bike once, had no issues. But I picked up this 4 wheeler at an auction. They stated it ran, but only needed a battery. Well I do not believe that was all true.
Some pictures are attached. Not sure why, but the whole air filter stuff was removed. They had some small thing inserted as a make shift air filter.
I purchased a battery to try this all out. Waiting to return it and get the proper size, as it was too big for the battery box. But here is my issue I had while the battery was connected.
1 - The lights on the steering column did not come on. Not sure if they work or not.
2 - The starter solenoid seems to be bad. I have a new one on order.
3 - In the pick, there is another rusted part. Not sure what that part is or what it is used for.
4 - What is the 12v rectifier? square bodied part.
So when I hooked the battery up. Pushing the start button did nothing. Pulling the cord to try and pull start, it turned, but would never fire. I have put in a new spark plug as well, it looked worn out. With electric start, I crossed over the posts on the start solenoid, it turned over, but would never fire and start.
I have read a few other threads and it stated something about needed the neutral light on. SOmething about a kill switch.
Any help would be appreciated.
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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 Mike Strayhorn
last year I bought led lights when I was riding my 4 wheeler the lights started getting dim shut off
now my 4 wheeler will not start the battery is hot everything is dead I checked the fuse and its good
would there be another fuse I am missing I'm took the led bulbs out and replaced them with the ones that was in there
wonder what meh problem is
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Similar Tagged Content
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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 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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