Street Triple 675r 2013 Trouble.

DP.

First - the blue revs-linked lights can be configured in different ways, i.e. to come on in a number of ways at different stages. Check the handbook to see how to change the mode in which they operate. Ask your friend, also, if he made any changes to the shift pattern lights.

This doesn't address the 'twitching and shaking' issue, of course, which is not necessarily directly related to the lights' indications. The symptoms you describe COULD be that the bike has had the rev limiter set low which COULD also link to the blue lights setting. My advice would be to check, first, the handbook for these two settings and see if you can configure them differently.

If that doesn't get you anywhere then you might want to have the on-board diagnostics checked by a local dealer/mechanic.

Hope you sort it and enjoy it in 'full operating mode' soon!

 

The blue lights are just a shift indicator and have no effect on the rev limiter regardless of when they are set to come on. It sounds more like fuel starvation which could be the fuel filter or perhaps a blocked fuel tank breather pipe.

 

Precisely the symptoms I had on my Bonnie recently. Turned out to be fuel starvation arising from a kinked fuel line.

 

Yep, exactly that.

 

@DP&TC I had a Yamaha 600 back in 2010 and took it to the Manx GP. Now this bike was an infrequent commuter plus a toy but was 100% reliable yet as soon as it got going on that trip it was useless.
We arrived at 06.00 on day one and went for a quick lap before breakfast
....... err nope, not quick, as it cut out a few times when running for sustained periods of 10k and wouldn't re- start, yet 10 minutes later all good.
I went to the Yamaha dealer and had it stripped down, on the pavement by his front door, ready for when he opened up. I bought a new fuel filter and fitted it, then carefully cut the old one apart for inspection.
It looked perfect with absolutely nothing to see but was the complete culprit.

Easy solution once pinpointed and inadequate flow rate sounds your issue

 

Aaahh...... now, you see, you didn't mention the bike has a QS! They are, as you've found, extremely sensitive and you do have to be very careful about resting your foot on or near the gearshift pedal.

I found much the same problem with my 2010 after fitting and using a QS for the first time - I'd obviously been in the habit of changing gear then leaving my foot resting close to the pedal ........ close enough for even the slightest of contact to operate the QS's ignition kill function momentarily!

Glad it's all sorted for you. Enjoy.

 

Umm now you mention QS it puts a different slant on things.
The only time I've had a problem with mine was when I had my little lad on the back and he sat really close in so we were both in the front seat. My operation of the gear lever, albeit from a slightly different seating position to normal, wasn't positive and confident, a sort of soft stroke rather than a firm movement. Other than the above scenario my QS has been 100% reliable when on my own or with adult passengers.

Is it worth considering your gear lever positioning, where maybe a minor adjustment could prove beneficial?

Presumably your QS is only on the upshift so concentrate on the relationship with your foot beneath the lever.