BRIGGS & STRATTON 591420 Engine Magneto Armature

The BRIGGS & STRATTON 591420 Engine Magneto Armature generates the ignition spark needed for dependable engine starting and operation, hard starting, and sudden engine shutdowns.

This part corrects the following symptoms:

• Engine produces no ignition spark.

• Hard engine starting.

• Engine misfires during operation.

• Intermittent ignition performance.

• Unexpected engine shutdowns.

No Ignition Spark

Quick Check: Test spark output using approved spark tester before engine starting attempts.

Fix Suggestion: Adjust armature gap ensuring proper magnetic ignition function during operation.

Prevention Tip: Keep ignition area clean preventing debris affecting spark generation.

Hard Engine Starting

Quick Check: Pull starter while observing consistent spark at spark plug.

Fix Suggestion: Position armature correctly supporting dependable spark production during engine start.

Prevention Tip: Clean flywheel magnets regularly maintaining consistent ignition system function throughout seasons.

Engine Misfires During Operation

Quick Check: Listen for uneven firing while engine runs under steady load conditions.

Fix Suggestion: Secure ignition connections improving continuous spark delivery across operating speeds.

Prevention Tip: Avoid moisture exposure protecting ignition components from electrical function interruptions.

Unexpected Engine Shutdowns

Quick Check: Observe ignition activity after engine reaches normal operating temperature.

Fix Suggestion: Restore stable spark output reducing unexpected engine stopping during mowing operations.

Prevention Tip: Inspect ignition wiring periodically preventing loose electrical connection related issues.

Customer Experience: A mower owner reported more consistent starting after installing the magneto armature, with smoother ignition performance during regular operation.