Small Engines (Lawn Mowers, etc.): no spark, feeler gage, match book


Question
QUESTION: briggs model 100202  401034  6206180
i bought a snowblower simplicity, no spark i replaced the coil and points. still no spark the old coil had three arms the new one only has two. also their was two wires coming from the condenser one to the coil the other to the ground on the engine.  the new coil was different but that was the replacement. dont know what else to do

ANSWER: Tom
Make sure the coil is not grounded any where and check the kill switch to make sure the wire is not pinched anywhere or grounded out. ^There should be one wire from the coil that goes to the points and then another wire from the coil to the kill switch. There also should be a wire from the condenser hook up to the same wire from the coil. That should do it also adjust the flywheel gap to the coil put a match book cover and the gap on the coil should be. The gap should be .006 to .010" at the magnets.
I set the magneto back and snug it up. Then rotate the flywheel so the magnets are directly below the coil, and put a .010 feeler gage between the magneto legs and the magnets. Loosen up the magneto bolts to allow the magnets to pull it down onto the flywheel with the feeler gage between them. Tighten up the magneto bolts, then pull the feeler gage out by rotating the flywheel.

Now Use the 1/4-inch nut driver to remove the small bolt that holds the ring connector to the metal frame of the engine. The ring connector is attached to the other end of the coil. Observe that the wire will be a bare copper wire with a varnish-like coating.

Place the leads in the volt ohmmeter. Take the red lead and plug it into the connector marked "ohms." The black lead will go into the connector marked "common." Switch the meter to the ohms position on the power dial. Touch the leads together. The meter short read "zero" ohms or a direct short.

Touch the red lead to the connector under the rubber hood of the spark wire. Connect the black lead to the ring connector on the other end of the coil. The meter should read two to five ohms. If the meter reads "zero" or a direct short the coil maybe bad. The coil will also need replacing if the meter indicates an "infinite" ohm reading or a resistance greater than 1000 ohms.

Reattach the small ring connector to the frame of the engine. Touch the black lead to the frame and the red lead should still be in contact with the connector in the spark wire. Turn the meter to volts. The red lead should also be placed into the "volt" connector on the meter.

Move the flywheel to a position where the permanent magnet on the flywheel sits to one side of the coil. Set the meter in a position where you can read it without holding onto it. Turn the flywheel back and forth where the magnet will pass in front of the coil. It may take two hands to perform this task. As the magnet quickly passes in front of the coil face it will generate a small voltage through the coil. The meter should read some type of voltage.




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QUESTION: Thankyou
I checked the coil and everything checked out ok. the only problem is I am trying to reconnect the wire from the condenser to the kill switch. that must be why I am having no spark. also the small wire with the ring connector is very short the only place i could ground it was to the bolt holding the coil that is where the old connection was. is that right one wire from the condenser is connected to the coil the other wire goes to the kill switch

ANSWER: Tom

Try not using that wire with the ring isolate that from any part of the engine. I had the same problem with a older engine that wouldn't spark.Also make sure the wire that goes to the points is not grounding out,sometimes when you tighten it it moves. Place a VOM meter in the ohms or continuity position to make sure that the wire to the coil is not shorted.

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QUESTION: I understand about the wire with the ring. where should i connect it. it is only about 3 inches long.

Answer
Tom

Try not using that wire with the ring isolate that from any part of the engine.
on the coil you should have 1 wire from the coil that goes to the points/condenser. on the coil you should have a small tab to install a connector that tab should be wired to the kill switch.