Yes... a manual is a must.
Besides the piston and gasket set you will need a wrist pin bearing as most kit's do not come with them.
Before you turn one nut, WASH your engine thoroughly...
Otherwise you will drop who knows what into your crank...
As you are disassembling, take a lot of pics for reference to make reassembly easier.
Once you get the cylinder off... take a good hard look at the area around the exhaust port.
Sometimes it can be hard to spot for a untrained eye.
A dirty cylinder will look something like this
When cleaned can look like this...
The plating is worn off and the rings are wearing into the aluminum.
This cylinder needs a re-plate...
While you have the cylinder off, measure your rod to crank half clearance with a feeler gauge like this..
If you have never measured one, follow these directions..
http://www.oem-cycle.com/forum/viewtopic.php?f=114&t=1284That will tell you if it's also time for a crank rebuild.
Any questions?
Ask Motorrad