The right hand side fan is for the air condition. If the car is on and you switch the air condition the fan will come on.
igniton module igniton module
crankshaftsensor
With a hammer and a cold chisel.
Igniton System or Misfire
Yes
yes, need it to start the car.
ZERO at Top dead center.
It should be a yellowwire on the igniton coil
look on the manifold it should have the squence engraved on it
inverted torx socket.
At your local Stihl dealer
RH Side Of Steering Column