Remove recoil
Remove little dust shield
Disconnect wires
Unscrew both Allenhead bolts
Remove old coil
Rotate flywheel until the magnetic part points toward the rear of the saw
Place new coil in place
Connect wires
Tighten bolts lightly
Sping flywheel until magnets face coil
Place business carb between the flywheel and coil
Loosing bolts
Let coil move toward flywheel
Tighten bolts
Remove business card
Check to make sure flywheel turns freely
Done, at least that's how I would do