This is my first post, although you guys have provided many answers for me in the past in your solutions for other folks' posts. I have a 20 year old john deere lawn tractor with a kawasaki fc420v engine. Lately it has been getting harder to start and now, finally, it won't start at all. I have checked the spark and it is very weak. I checked the coil and it is ok. The ignitor is ok too. The key switch appears to be bad according to the electrical diagnostic in the deere tech manual. The red blue wire that goes to the breaker also failed the test. I bypassed the switch and replaced the wire = still weak spark. I think the starter is going bad from overheating (even though I never cranked it more than 10 seconds before letting it rest) it sometimes gets very hot and begins to slow down. Is it possible that the starter isn't turning the flywheel fast enough to get a good spark? Would a relay kit help? Is the relay kit the parts that include the clutch or the parts that include the brushes? Thanks for any help in advance.