Replace of the distribution chain

Because my bike had run about 110.000 km it was getting time to replace the distribution chain. Maybe it wasn't necesary but it can give a hell of a mess if the chain brakes because the pistons can hit the valves.
The replacing of the chain is quite a though job and luckily I had help from someone who did this before and knows much more about working on engines than I do.
I will describe how it is done so you can decide wether to do it yourself or to let it do by a shop.

(c) W.P.Barendsen 2002