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no spark on my B & S 13.5 HP engine

Customer Question
no spark on my B & S 13.5 HP engine
Submitted: 8 years ago.Category: Small Engine
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Answered in 4 minutes by:
6/27/2010
Technician: Jon K., Small Engine Diagnostic Expert replied 8 years ago
Jon K.
Jon K., Small Engine Diagnostic Expert
Category: Small Engine
Satisfied Customers: 5,818
Experience: Gold certified Stihl tech, Service Manager for a rental/repair shop.Certified in most small engines
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Test your coil to see if it is the coil or your kill switch wiring. On the coil there is a small black wire that is plugged in to it. Unplug this and check for spark. If you have spark then follow that small black wire and check for grounding or rubbing. If there is no spark then replace the coil
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Customer reply replied 8 years ago
I have Sears oners manual and repair parts list but cannot find coil or even parts explosion illustration for magneto?? Weird Dave
Technician: Jon K., Small Engine Diagnostic Expert replied 8 years ago
The coil is the small black box that the spark plug wire comes out of. It will be located under the engine shroud and be next to the flywheel.
Jon K.
Jon K., Small Engine Diagnostic Expert
Category: Small Engine
Satisfied Customers: 5,818
Experience: Gold certified Stihl tech, Service Manager for a rental/repair shop.Certified in most small engines
Verified
Jon K. and 87 other Small Engine Specialists are ready to help you
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Customer reply replied 8 years ago
That was it . Kill wire was grounded. Haven't found where but guess it may be in key switch. Will check later - going away tomorrow for 2 weeks and had to get lawn mown today. You saved me!!! Dave
Technician: Jon K., Small Engine Diagnostic Expert replied 8 years ago

Good to hear. Trace that small little wire backwards and you will find where it is grounding out. I will bet it is before the switch.

 

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