Feel a bit guilty reading the original post.
Fitted R wheels back and front and a WR125 master cylinder and after bleeding the brake I cut the front brake light wires to join them and have the brake light working for MoT.
I'd fitted a new battery and turned the ignition on and as I was pushing the new connections together I brushed the starter button and the bike burst into life and idled away quite contentedly.
The bike has been off road for over 3yrs and the fuel in the tank was from early 2014!
Seems they're not all fuel fussy.
Mine's a 2008 Tenere.