I just went to quote that last bit on the spark and theres all sorts of stuff in that post that didnt come out, like some hidden stuff.
The flywheel & ignition. Dont be anal with it.
The magnets on the flywheel etc, its done with magnets and they do not need clean steel.
Yeah check the stop wire contatcs are not corroded, they should be fine.
To check the spark you clip the spark plug lead about 3mm away from the alloy of the head (use a clothes peg) then in a dark space pull it over and check for sparks.
You would also do the same but with the plug in place if you want to check the plug is sparking.
