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Scoopeddad

1994 Yamaha big bear 350 Starting Issues

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I have a 1994 big bear and I am starting to have issues starting. I put in a new starter and selnoid as the at stopped starting with the electrical but will still start with the pull cord. Where and what now should I be looking at to check? If I turn key to on and the switch to on then hit the start button, the bike clicks and then nothing. Lights still work but no response to the starter. Stumped now. Any help would be greAt.

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Have you checked the starter? Also the relay. You can jump the relay and see if the starter goes. If so then prob the relay. The relay is located usually under the seat by the battery.  

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You can jump the relay by taking a piece of wire and touching the two large wires on the relay.  Do not hold the wire on the two lugs for two long.  Simply put the wire across the two  lugs with the two larger wires and the starter should go. If not then there may be a starter problem. 

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Also keep in mind that there could be a bad, dirty or loose connection. Even corroded. 

Check the start button as well.  Take the battery terminals off, Clean and reconnect. All plugs, wires and connections should be checked and cleaned.  

Peocess of elimination. 

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Topic moved to Yamaha ATV forum and added issue into topic title.

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I am having a problem starting also but my issue is that when my 1989 350 big bear is cold the electric start works fine. After riding it for a while (engine is hot) and I turn it off, the e start no longer cranks. I can pull start but not e start. Will the above trouble shooting still apply or might there be a more apparent solution to this issue. 

Thanks in advance!

 

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@etsbigbear I’m assuming your starter is getting hot and not working properly. But will work when cooled down.

 The next time this happens I would try to jump the starter at the solinoid and see if the starter turns the engine. But only do that for a few seconds at most. If you get no spin then most likely a starter.

Also when the symptom happens you can also try this. 

If you have a tester you can see if the wire at the starter is getting 12 volts when you press the start button. Make sure the wire located at the starter is where you are testing. Red lead on the wire at the starter and black lead on a good ground.

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Thanks,

I will try the tester first. I will report back what I find

Thanks again!

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I have not had a chance to get involved with my issue yet but I did try to start today as I like to run my machines every few days. 

So my big bear turned over a couple times and I let off the button. Hit it again and it turned over a couple times. Let off the button and hit it again and only heard a clicking under the seat which sounded like it was on the right side. Anyway I tried to pull start and could never find a spot where the compression didn't want to RIP my arm out of socket. My questions are:

1. Whith this now happening with a cold engine and charged battery does this help to elucidate what may be the problem?

2. Is there a trick to off load the compression for the pull start?

Thanks again!

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Battery doesn't have enough power it sounds like. The ATV doesn't have a compression assist. Used two hands with a good trip. I usually only pull start mine.

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Okay so I had a chance to troubleshoot today. I took the starter selenoid off and touched the wires together several times. A couple of those time it cranked over but did not start because I broke the connection after a couple engine turnovers.

I could not get it to crank again so I took the battery down to get tested as the couple times it turned it seemed sluggish like a weak battery. The battery tested very good.

So after trying to jump the starter to no avail I removed the starter and jumped it with the removed battery and I was successful getting the starter to crank b bu t not every time. It did spin more often than not. So I put everything back on and tried the e start and nothing but a click each time so I used my circuit tester (light) to see if I had juice to the starter when I pressed the start. Yes. Even checked the selenoid which was obvious it worked otherwise I wouldn't have power at the starter. 

Starter just wont crank when it's on the atv! Called a local starter repair shop and they are ordering me $4.50 brushes as this is their guess. I will change those and if it doesnt work I will replace the starter with new.

Question.....does this sound like i have narrowed it down? Could there be another issue? Like i said I even tested the e start button with the light by testing down current of the starter selenoid and ther was power. 

I was also able to start the big bear with the pull start today without losing an upper limb🙄

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It sounds like it’s the starter is bad.  Replacing the brushes is a cheap repair so hopefully that’s it. 👍  If the problem still exists then it may be the actual starter itself and that’s cheap enough to change as well.   In the mean time if you’ve loosened and tightened all connections to make sure any corrosion is off ? as well as the main fuse just pull it out, clean and reinstall,  then the last item it could be is the start button not making a solid contact when pressed.  This is possible if the bike has been sitting outside  moisture gets inside the controls oxidizing the copper contacts. 

 

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Frank, 

You are correct! The seal fail on the starter and oil gained entry and ate the brushes. Bought a kit for 15 dollars works like a champ.

Thanks for you help!

Trent

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Mines a bit choosy about wanting to start too, but will "eventually" go on pull start the only thing is the pull start is so hard to pull and can take a while and i have to do a flicking type manouver to get the pull start to catch is this normal ?

Thanks

 

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