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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 12592
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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Just replaced a coil on the fc 540. starts fine and develops

Customer Question

just replaced a coil on the fc 540. starts fine and develops misfires after 5 min or so. i bet the coil was bad but not so.
Submitted: 1 year ago.
Category: Small Engine
Expert:  Curtis B. replied 1 year ago.
Welcome to JUST ANSWER small engines, let me try to help you !! What is the full model number? Looking at the FC540 in a Deere 185 mower, it shows a one wire igniter, that can cause erratic spark when it heats up.?? Do you have a spark tester to see if the spark becomes erratic? If it does, replace the igniter.