Small Engines (Lawn Mowers, etc.): Generac 10 hp B&S no spark, sectional index, safety switches

Question
Hi,

I have a generator with about 25 hours on it that worked fine and then stopped running. There was no spark. I checked the oil and it was full. Everything seems to be fine but there is just no spark.

The engine is a 10 hp B&S:

Model 19G412
Type 012901
Code 9612121A

I wanted to try to bypass the Oil Guard to make sure that is not the problem or find a way to bypass the sensor or some way to put it on a voltage or ohm meter to test it.

Any other suggestions would be welcome for debugging the lack of spark.


Thanks for the help

Answer
Hello Kevin:

You can View a Breakdown/IPL of this Engine at this Site Addy, http://www.smallenginepartswarehouse.com/parts.asp and Select the Shop Online Parts Look Up. Then Select the Model Tab. Then Select the OEM and Enter the Model (19G412) and Type Numbers (0129). Example: 19G412-0129. Then Double Click on the Model in the Results Area. Select Sectional Index. Now you can Select the Section of the Engine you Wish to View. Unplugging/Disconnecting the Oil Guard Sensor will Usually Allow the Engine to Spark and Run if the Sensor is the Cause of this Problem. The Following is a Basic Instruction File I Made for Checking the Coil/Ign Coil/Magnetron on Small Engines. Any Input is Appreciated. **To Check the Ign Coil; Remove the Spark Plug/s. Wrap a Wire Around the Threads of the Plug and Attach the Other End of the Wire to the Engine Block. Remove the Blower Housing (metal engine cover). The Wire that is Connected to the Coil/Ign Module from the Shut Off Switch needs to be Removed (unplugged) from the Coil/Ign Module. Now Check for Spark at the Plug. If Spark, then the Shut Off Switch or the Wire is Bad. If Still No Spark, then the Coil/Ign Module is Bad. If there are Safety Switches on this Unit and the Coil is Good; you Need to Check the Safety Switches for Being Bad Also.** If you Hit a Snag or this Does Not Correct the Problem,  I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. Have a Happy Holiday Season and May the All Mighty Bless You and Yours. Be Safe and Happy. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 10 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Comments and Ratings are Greatly Appreciated. Thanks.

Respectfully

John