Disassembling YS91FZ
 

Hi Dave,

I'd like to disassemble my YS91FZ to just inspect and clean it (it's into its first 5 months of running now) but as it's my first four stroke I'm a little apprehensive about what I should do/be aware of. Is there anything I need to be careful to note so I don't reinstall backwards, or is there a recommended procedure in taking the engine apart? Thanks for your advice.

Cheers,
Ken

Disassembling YS91FZ
 

If your engine is running OK, DON'T take it apart.

If you do, have all the replacement seals and gasket sets at hand so they can be changed.

Last of all, if you don't have the experience necessary for this job, let someone who knows YS engines do it for you.

Good Flying,
Dave