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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.
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
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.
Dumb question. How much oil registers on the oil level gauge while running? The oil level reads correct when off, but while running I can only see just a little bit in the oil level gauge. Makes wonder if the oil isn't circulating well enough.
Also, whats your preference in battery brands for ATV's (standard or AGM). We don't ride it all that often.
Thanks in advance for any info.
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Hey all I have a question on my 94 fourtrax 4x4. The electric start won't work. When I hit the button I hear the solenoid clicking but nothing happening. I put on a new solenoid and same thing happened. So I took off starter and checked it, brushes looked good nothing looked out of the ordinary. My battery is putting out 11.2 volts. I wouldn't think that would be it since I put a newer battery in from my other quad and still got same results. Any ideas I'm scratching my head on this one.
I bought this old three wheeler that I found in a barn. It looked pretty rough, but I have it running now and functioning.
With the switch set to "run" and the key in the "on" position the electric starter does not work when I push the starter button,
However, if I cross the solenoid it will work and it will start the engine - so I know the starter motor is good and it works.
Now, it gets a little mysterious. When the engine is running, AND the headlight is on high beam, the electric starter will engage when the starter button is pushed.....When its already running! (when the headlight is off or on "low" the starter button does nothing, only when running and in high beam will you hear the starter motor zing when you push the starter button) So, I know the button actually works, but only after the engine is already running and the high beam is on!
So to recap: with the key on, the starter button does nothing. crossing the solenoid will make the starter work, and after the engine is running the starter will work with the button!
Has anyone else had this problem? Can anyone point me in the right direction on solving this one?
It is a 2000 kingQuad 300 that is used on the farm daily to make chores easier and faster. I have now cleaned oil out of the starter twice and can not find where it is coming from and why it has all of a sudden started doing this as it has been a great work horse until now. A cleaning only lasts about one day of use and you can pour the oil out of the starter. The oil level in the crankcase is just right and is checked routinely as it has burned a little oil since it was new.
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