Huge Fuel Reserve on XT660Z Tenere & How It Got Me Stranded!

Normally on longer trips I judge how much fuel I have left in my tank by the miles covered, and I think that’s the best way to go. However, when commuting, I rarely count miles as my commuting is only a few miles one way, so the only way to know is by checking fuel gauge and reserve light indicators.

Trouble with xt660z is that fuel reserve is almost  ⅓ of the tank, and with a capacity of 23 liters – that’s a lot of miles that can be covered on the reserve! 

First when i got the bike i was a bit twitchy seeing that orange light on my dash, but after filling up and realising that i’m not using all the fuel available, I stopped. And with time started ignoring the orange reserve light, because once it kicks in, it starts a new count – count of miles on reserve or “F-trip”. So I was going by that, and as soon as it hits 50 miles, I know it’s about time for the petrol station! 

And here is the funny part!

One day after work, I jumped on my lovely XT, and it just wont start! Did all the usual checks: spark – check, air – check, fuel – sort of check – reserve showed that i have covered only 10 miles or so, but still nothing… Tired, puzzled and disappointed, I called the taxi to take me home, and the next day when I came back I brought some additional tools with me so I could do more checks, however…to make it work again all I had to do is to put it upright again! Feeling dumb, started thinking how on earth did that happened!?

So here is how… 

On the way to work, I have to cross a very bumpy railway crossing and when, to get to the workplace – a straight road down a fairly steep hill… Sometimes I go over that railway crossing a bit faster than I actually should…so I believe that a few days back, I probably shook up the fuel inside of the tank violently enough to lift the float inside of the tank, making it to think that I topped it up with fuel again! But when the float went down again it reset the count! 

And obviously because I thought that I still had plenty of fuel, I kept riding it till that very last downhill, where the remaining fuel moved towards the front of the tank, leaving fuel lines empty, and then failing to start because I tried to start it on the side stand too!

Explore More!


All Yamaha XT660Z faults and hiccups that left me scratching my head.

  1. How to fix rattling headlight reflector
  2. How the regulator rectifier overcharged my Tenere’s battery.
  3. Funny oil leak, or how i lost 1 liter of oil in 500 miles.
  4. Funny story: how my XT660Z fuel reserve light tricked me, leaving me stranded!
  5. How the starter relay got fried twice on my xt660z!
  6. How I fixed a squeaky / rattly dash on my xt660z!

All Yamaha XT660Z Mods!

Recommend this article on:
Scroll to Top