Quad bike problem

linga · Oct 22, 2019

Our quad bike stopped suddenly in the field the other day.
No warning, no nasty noises ,just stopped.
First thing , of course is press the starter to see if it would restart...nothing, completely dead.
So , thinking somehow the battery must be flat I tried jump leads on it.
As I completed the connections the starter fired itself up without me pressing the starter. Still didnt start though but in a way thats secondary because it shouldnt have tried starting.
Whats wrong with it ?
What will cause it to try to start without pressing the starter switch?

Timbo · Oct 22, 2019

Some clue as to make and model? I didn't install the telepathy app sorry.

milkloss · Oct 22, 2019

Try pulling the starter relay under the seat/cover under the front rack.

linga · Oct 22, 2019

Timbo said:
Some clue as to make and model? I didn't install the telepathy app sorry.

Well that was remiss of you !
Its a Yamaha but no idea what model it is.

linga · Oct 22, 2019

milkloss said:
Try pulling the starter relay under the seat/cover under the front rack.

Actually its just had a new one so that has been on our mind, however its been running fine for a week or so after the new one

neilo · Oct 22, 2019

linga said:
Actually its just had a new one so that has been on our mind, however its been running fine for a week or so after the new one

Could it just be a short across the terminals of that relay? I don't suppose you've had any wet weather recently that might have got in there?

linga · Oct 22, 2019

neilo said:
Could it just be a short across the terminals of that relay? I don't suppose you've had any wet weather recently that might have got in there?

Wet weather...could have had some being in West Wales I suppose.!
Would that cause it to suddenly stop ?

ajcc · Oct 22, 2019

Starter relay needs replacing.

milkloss · Oct 22, 2019

linga said:
Wet weather...could have had some being in West Wales I suppose.!
Would that cause it to suddenly stop ?

Flat battery because the starter motor was running whilst you rode it? Hope it’s not self destructed.

linga · Oct 22, 2019

Thanks. Sort of what we were thinking

Mursal · Oct 22, 2019

Best take the spark plug out and with it resting on the cylinder, you should see a spark while cranking the engine over?

livestock 1 · Oct 22, 2019

Not wanting to hijack this thread but my Honda 350 did exactly this last week. No ignition lights only turns over when solenoid is crossed over won’t start 30 amp fuse blown in box???

linga · Oct 22, 2019

This afternoon I disconnected the solenoid and charged the battery then reconnected the solenoid.
It started properly and ran fine so we used it for a bit but later on it woudnt start and was totally dead again but at one point it went back to briefly spinning the starter motor when the starter was not pressed.
So I disconnected the solenoid and gave it a quick charge and its now starting properly although I havent used it since that charge.
It will be interesting to see what it does in the morning

milkloss · Oct 22, 2019

Take the cover out from under the front rack and you’ll find the starter relay. I’m guessing it’s fecked.

vantage · Oct 23, 2019

Have you checked the red stop switch on the handlebars, never use mine , always the key , so was a bit lost when it had been moved by a cow?

linga · Oct 23, 2019

vantage said:
Have you checked the red stop switch on the handlebars, never use mine , always the key , so was a bit lost when it had been moved by a cow?

Yes, we always use ours

Mursal · Oct 23, 2019

If the battery goes flat even when disconnected, you need a new one?

linga · Oct 23, 2019

Just had one. Not sure battery is flat. Problem I think is starter is permanently spinning.
need to get to the relay but is proving fiffucult

milkloss · Oct 23, 2019

linga said:
Just had one. Not sure battery is flat. Problem I think is starter is permanently spinning.
need to get to the relay but is proving fiffucult

Shouldn’t be, relay isn’t on the starter.

Mursal · Oct 23, 2019

If you have a manual start, disconnect starter at solenoid and use/test and come back to us with results.

Quad bike problem

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