Hi - I've got a 3TJ that won't start on the button. I've charged the battery (and tried another battery from my other one - 4DX which was starting fine), I've changed the Regulator, changed the Solenoid and checked all connections are good. The bike starts easily with a bump start but when using the electric start it sounds like a relay is just clicking - and seems to kill the battery. I haven't changed the starter motor yet and thought I'd ask on here before stripping things down that far. Any help much appreciated - thanks

Whip the connector off the solenoid and check the voltage you're getting when you press the starter.

It could be the earth lead breaking down. Easiest way to check is get a car jump lead, connect one end to the engine (exhaust downpipes are good) and the other end to the battery negative. If that improves the cranking speed then it's deffo the engine earth going awol. It goes to the very back of the gearbox under the front of the battery.

Chris

Cool - will try and check this out on Friday when I'm off work - thanks guys