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Discussion Starter #1
Have an 86 fourtrax 350 that I've owned since new. Had an issue that started last fall where the bike would simple shut down while riding. I'd let it sit a bit and then it would start and run. Happened again this spring. When it occurs I have no oil light, neutral light, headlight or ability to engage the starter switch on the handle bars. The battery is new, all the fuses are good and I have power at the starter solenoid. Another odd thing is when I would turn on the key it would take a 10-15 seconds for the neutral light to come on and sometimes it would be very dim. It almost acts like loose connection or a switch that's not operating correctly, but I have been unable to find either. I replaced the ignition switch a year or so ago with a non-oem switch. Would appreciate any thoughts anyone would have.
 

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JC, if you have power at the starter relay but the starter will not engage, that indicates that there is a problem with the ground portion of the starter relay circuit. That includes the light green/red wire coming out of the starter relay. That wire goes to the neutral switch. The neutral switch must be closed (ATV in neutral) in order for ground to be completed to the machine frame. Check that the wire is not broken and that the neutral switch is closing when the machine is in neutral.
 

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Thanks. I haven't checked the relay yet, but will. It's so random. I could go out and try now and it may work. Then again it may not. Then there's the issue of riding along (at night) and it just shuts down. Do you thing the relay or neutral switch could do that?
 

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Thanks. I haven't checked the relay yet, but will. It's so random. I could go out and try now and it may work. Then again it may not. Then there's the issue of riding along (at night) and it just shuts down. Do you thing the relay or neutral switch could do that?
Possibly the neutral switch could cause it, but it's hard to say. You have to start somewhere, though, and the starter system is a good place to start. Once the starter is working reliably, then you can move on to other things.
 

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Finally had time to look into this a little more. I still have no lights on the dash nor does the starter button engage the start. Battery is good and I can short across the starter solenoid and it spins the starter. I forgot to mention earlier that I installed an aftermarket key switch 2 years ago. Does anyone know if the Kill switch/headlight/ starter button unit on the left handlebar could cause such a problem? CDI box?
 

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....I forgot to mention earlier that I installed an aftermarket key switch 2 years ago....
Aye, you know what ya gotta do don't ya... get that china garbage off there and buy a good new or used OEM switch! 1986 TRX350 ONLY. No other year models will fit the 86.

If you still need help after your OEM ignition switch is installed, come on back, we'd love to help!

Got any pics of your ole gal you can share? :)
 

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The fact that your headlight is affected tells me ignition (master) switch is involved and not the ignition system.
Unless you were having neutral light problems before and thot changing the switch would fix?
 

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Thanks for the feedback guys. I kinda suspected the key switch because I had power intermittently and now it's totally dead. Just trying to save a buck! :) The other issue was the fact that the neutral light was at first dim and over the course of a minute or so would brighten up and it would start suggested a poor connection. But it baffled me that I'd be riding along and it would just die, sit for a minute and start back up and be fine. But it has been continually been getting worse and the only think that has changed is the key switch.
 

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Finally! The new switch did the trick! Back to normal and ready to ride! Thanks for everyone's help! As it turned out, the old switch WAS NOT a knock off but an OEM Honda switch! Only got 2-3 years out of it. Odd for Honda parts. Here's couple pics of the old girl.....
 

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Same here

I have the same problem with a 2000 Foreman 400. Parked it one day with everything fine. A week or so later, turn on the key and no neutral light, oil light, headlights etc. Will not crank. The only thing that registers is the little green light for the hour meter flashes (normal function). I can pull start it or start it by jumping the solenoid. I changed the ignition switch with a Honda part ($65). and still nothing. I had the battery tested just to be sure and it's fine. Neutral/reverse switch seems to test good - I'm not great at reading my multimeter and can't find instructions. Could it be the ignition relay and if so, where is it and how do I test it?

Thanks in advance for any suggestions.
 
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