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Ignition Coil Replacement On A Small Engine

by Jeremy HIPA 11 Dec 2022 0 Comments

This blog is a step-by-step instruction for replacing the ignition coil on a Briggs & Stratton lawn mower engine. The most common reasons for replacing the ignition coil is when the small engine won’t start.


Before you begin the replacement, you need to make sure the engine has cooled and remove the wire and boot from the spark plug to prevent the engine from accidentally starting.
Step 1: Now loosen the rope guide wing nut and remove the starter rope.
Step 2: Use a 5/16 inch socket or nut driver to unthread the bolts securing the blower housing cover, then lift off the cover.
Step 3: Now disconnect the ignition coil wire and rotate the flywheel magnets away from the coil.
Step 4: Use a quarter inch socket or nut driver to remove the mounting screw securing the coil and pull the old coil off.
Step 5: Install the new ignition coil by aligning it on the engine. Then thread the mounting screws loosely. Pull the coil back and tighten the screws.
Step 6: Now rotate the flywheel, so the magnets align with the coil and insert a business card between the coil and the flywheel.
Step 7: Loosen the screws to align the coil the correct distance from the flywheel. Tighten the screws and remove the card. Connect the ignition coil wire, replace the blower housing cover then thread tighten the bolts to secure.
Step 8: Depress the bale arm, extend the starter rope and hook the rope on the guide. Tighten the rope guide wing nut.

With the repair completed, attach the wire and boot to the spark plug and your engine should be ready for use.

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