If, by coil, you are referring to the ignition armature and since you
didn't specify what brand of engine you have I will give you
instructions for Briggs: ((The instructions are similar with MOST
engines with a few variances.))
Disconnect the
spark plug
wire from the spark plug, remove the blower housing from the top of the
engine (That is the half round/half square metal cover on top of your
engine, this will give you access to the ignition armature:
Installing And Adjusting A New Ignition Armature An
ignition armature must be set at a precise distance from the flywheel. Ask your Briggs & Stratton
Authorized Dealer or consult our
Engine Check Chart for
the proper gap for your engine. Common armature gap ranges are .006-
.010" and .010 - .014". Armatures are often packaged with a shim
to assist in setting the gap. Microfiche or index cards of the
proper thickness also work well.
- Remove the old ignition armature mounting screws (image A). Then, disconnect the stop switch wire from the flywheel brake and remove the armature.
- Attach a replacement armature from the original engine manufacturer, using mounting screws (image A). Then, push the armature away from the flywheel and tighten one screw (image B).
- Turn the flywheel so the magnets are on the opposite side from the ignition armature (image C).
- Place the appropriate shim between the rim of the
flywheel and the ignition armature. While holding the shim, turn the
flywheel until the magnets are directly adjacent to the armature (image D).
- Loosen the tight screw so the magnets pull the
ignition armature against the flywheel and shim. Then, tighten both
mounting screws and rotate the flywheel until the shim slips free.
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