Tiggertoo

Very busy night last after a load of parts turned up yesterday. Firstly, fitted a new ATU and got the timing sorted, that’s in another...

Just to say thank you to everyone and to let you know that the new ATU (and other bits) turned up really quickly (for a change) and I...

Is that beneath the LH side cover? - broken drive chain or something caught in the drive chain probably. As signal says it looks cosmetic.

Shame on Yamaha for not incorporating some method of adjusting them. Maybe drilling/tapping the stops and have an adjuster screw...

Well, I've bit the bullet and ordered a new unit...

A couple more pictures, timing is set above F mark if it goes much further towards T it splutters at idle (1200rpm). At 3,000+ rpm the...

Both cylinders are already retarded by a fair bit, firing directly above the F mark. If I retard much further it starts spluttering...

Finally sorted the misfire on decel but a new problem has risen when doing dynamic timing. The timing advance goes well past the...

There is an alternative way of adjusting the valves by rotating the engine to find when the gap is largest and adjusting it at that...

Thanks Jim, makes perfect sense now. Told you its been one of those nights, my brain is not firing on all cylinders. Must be beer time...

Don't know why the images uploaded twice, it's just one of those nights LOL.

So, I’m trying to track down the cause of misfiring/popping on the left cylinder. It happens at all rpms from 1,500 –3,000+ rpm on...

Hi Jabar6, funny you should ask that, it was first registered stateside in 1979 though looking through 650Skull's charts on here the...

Possibly thinking of the Triumph Hurricane X75? https://www.oldbikemag.com.au/triumph-x-75-short-lived-hurricane/

Hi folks, I’ve been lurking on the site for some time and, after taking delivery of my new (to me) ’79 XS650 Special last weekend, I...