09-10-12, 09:44 PM
My most recent is 60k old and I only changed the plugs for the first time last weekend. Seems abusive but the originals were still perfectly serviceable and I've felt absolutely no difference to the running since changing them.
I also had a chance to examine a 199,000 mile despatch riders bike after he split the cases. It was like new inside. Perfect mirror smooth bearing surfaces, cams and crank journals, bores, the lot. He only took it apart to show his young lad how to do it.
The one thing I'd watch out for is second gear getting jumpy. I had one strip the teeth but it was like that from when I bought it, and it was either like that from new or the previous owner was a wheelie merchant.
I also had a chance to examine a 199,000 mile despatch riders bike after he split the cases. It was like new inside. Perfect mirror smooth bearing surfaces, cams and crank journals, bores, the lot. He only took it apart to show his young lad how to do it.
The one thing I'd watch out for is second gear getting jumpy. I had one strip the teeth but it was like that from when I bought it, and it was either like that from new or the previous owner was a wheelie merchant.
![[Image: 125377.png]](http://mefi.us/images/fuelly/smallsig-uk/125377.png)