Cutting Out After Start Up

newT120 · Oct 7, 2025 at 8:35 AM

Hi all,
I've got a 2016 T120 and it's just developed this fault.
It starts fine, but as soon as I put the bike in gear, it cuts out (exactly like it does if the side stand is down but in my case the side stand was up).
It won't start again until after it's back in neutral and ignition switched off.
I've ordered a side stand switch eliminator in case the switch is faulty, but would appreciate any other ideas as to what it could be.
Cheers all
Chris

Boothman · Oct 7, 2025 at 8:46 AM

I’d say the side stand switch is at fault - if you have a wiring diagram you can wire in a temporary bypass.

but first you should try some variations on starting to see what else other than the side stand switch might be at fault.
Will the bike start if you are sat on it, side stand up with the clutch pulled in?
If yes does it continue to run when you release the clutch?
Will the bike start if you are sat on it, side stand up, in 1st gear with the clutch pulled in?
If yes will the bike pull away as you release the clutch?

The other thing that would be useful to know is did anything unusual happen the last time it worked correctly - did the bike fall over or such?

newT120 · Oct 7, 2025 at 9:45 AM

Hi Boothman
Thanks for Yr comments. I tried all the things you suggest.
Bike does not start if it's in gear with clutch in.
Starts fine when in neutral only, even if side stand is down.
Cut out only occurs when bike is put into gear.
So I think you're right, it's a faulty side stand switch. Because I am ancient with replacement knee I don't scrabble around the floor any more, so as previously mentioned I've ordered a plug and play switch eliminator which apparently replaces faulty switch as it fools the ECU into thinking all is OK.
I'll see how that goes.
Cheers