LawnSite Senior Member
No I did not replace the coils. If there was an issue with the coil won't my battery not charge and I would have a dead battery? My battery is fine and no problem starting the engine.
I did find the connections of the starter solenoid off the battery were loose. The two ring terminals are on the post of the solenoid are on the post but not clamped down tight. The two ring terminals one lead goes to the positive of the battery and the other lead goes to the ignition switch. I tried to tighten the nut on the solenoid stud but the nut has fused to the copper post and I can't tighten the nut.
I just ordered a new solenoid
I am thinking maybe since the ring terminals are not held tight that maybe the vibrations from the mower running with the blades engage is resulting in intermittent connection resulting in not enough electric current to fully engaged the Electromagnetic PTO Clutch. Could this be possible?
What should the nut that goes on the copper stud of the solenoid be made of?
Should the nut be steel, aluminum or stainless so it does not fuse/corrode ?
The ignition coils *that fire your spark plugs* is what he was talking about. Not your 'stator' that charges the battery.
Do you have a mini-tach you can use to see what the engine rpm is 'WOT' unloaded and again when you engage the PTO so we have an idea what we are dealing with?
A weak coil can cause the drop in rpm you are seeing when under load.