How do I know if my lawn mower coil is bad?

Turn on the lawn mower. If a spark appears in the spark window on the tester or if the engine of the lawn mower suddenly starts, the starter coil is in working order.

How to Test a Condenser in a Small Engine

  1. Remove the condenser from the engine.
  2. Switch the volt ohmmeter to the ohms position.
  3. Touch the red lead to the hot connector on the condenser.
  4. Remove the leads and reverse the placement to the condenser.
  5. Movement from the meter’s needle indicates the condenser is good.

One may also ask, do lawn mower coils go bad? Your mower may have a bad coil, especially if you cannot re-start your mower while it is still hot. If you have to wait for the mower to cool to start it, you should probably replace the ignition coil.

Thereof, how do you test a Kawasaki ignition coil?

Lay the ignition coil on a work surface. Set the dial on an ohm meter or multi-meter to 20k ohms. Insert the positive lead on the ohm meter into the end socket or the metal hoop on the spark plug wire. Put the negative lead of the tester onto the metal armature portion of the ignition coil.

What causes no spark on lawn mower?

If you don’t see a spark on the tester, there may be a problem with the ignition coil of the flywheel to which it’s attached. The ignition coil doesn’t frequently develop problems, but the connection between the flywheel and coil or between the starting pulley and flywheel can wear out, and the coil may not be turning.

What does a weak spark look like?

The strength of the spark is revealed in the color. A red or yellow spark is weak and probably will not spark in the cylinder. A blue or white spark is strong and has enough voltage to fight across the spark plug gap even under pressure within the cylinder.

How do you test a magneto?

Pull the rubber casing off the spark plug. Set the multimeter into the ohms function, or just use an ohmmeter. Manually set the dial or button on the meter to the 40 k range. Do not use auto ranging, as it is unreliable with a magneto.

How do I fix no spark?

If you do not see a spark, there is an ignition problem. Remove a plug wire and insert an old spark plug or a spark plug tester into the end of the wire (the plug boot). Place the spark plug on a metal surface on the engine, or ground the spark plug tester to the engine. Then crank the engine to check for a spark.

How do you check a coil?

The only safe way to test for spark is to use a spark plug tester tool. If a coil problem is suspected, measure the coil’s primary and secondary resistance with an ohmmeter. If either is out of specifications, the coil needs to be replaced. A coil can be easily bench tested with a digital 10 megaohm impedance ohmmeter.

What is the air gap on a Briggs and Stratton coils?

Briggs & Stratton Ignition Armature Air Gaps Model Series Type Armature Air Gap ( in. ) 97700, 99700 OHV Single Cylinder .006 / .012 115400, 117400, 118400 OHV Single Cylinder .012 / .020 120000 Horizontal Shaft OHV Single Cylinder .010 / .014 120000 Vertical Shaft OHV Single Cylinder .006 / .014

How do you test a small engine coil?

Testing the ignition coil and the spark plug Connect the tester between the spark plug boot and the spark plug. Then start the engine and watch the tester. Most people think you can check a small engine’s ignition system by removing the spark plug and grounding it while cranking the engine and watching for a spark.

How does a lawn mower ignition coil work?

When you start your lawn mower or small engine, you turn the flywheel and its magnets pass the coil (or armature). This creates a spark. Once the engine is running, the flywheel keeps rotating, the magnets keep passing the coil and the spark plug keep firing based on a specific timing.