No one should suddenly get paranoid because they have an electric clutch on their tractor.
Bart is quite correct when he states that engine damage can happen as a result of a certain type of short taking place within an electric clutch BUT...many of these clutches just fail in other ways that present no real danger to the health of the engine. According to Tom Hanson, a highly reputable and long-time Ingersoll dealer and member of this forum, these occurrences are RARE but if you go on certain forums, you might come away with the impression they happen daily.
More often than not, the insulation on the copper windings that make up magnetic coil in the clutch, breaks down from heat. As it breaks down, the copper windings can come into contact with each other and we call this a "short" because the electricity does not have to take the "long" way through the coil, it can take the "short" route. The more "shorting" that takes place, the more current the coil draws and this creates more heat which in turn, accelerates the deterioration of the insulation and causes more shorting to take place. Thus...you have a vicious cycle that often causes damage to the clutch control switch on the dash and even the connector that snaps into that switch. Eventually, the fuse may start blowing and that signals the end of the life of the clutch.
As long as all of this happens within the insulated confines of the clutch, then engine damage will not result. When the insulation between the windings and the metal of the clutch takes place, that's when a winding can touch the metal housing of the clutch. The clutch resides on the output shaft of the crankshaft and the crankshaft is support by ball bearing races that are lubricated by the engine oil. If electrical arcing takes place in that bearing, then the hardened surfaces become pitted. The pitting then causes further bearing deterioration to the point where the bearing can seize up and spin as a unit, thus damaging the block and/or the crankshaft.
This is not just an Ingersoll problem. It can happen with any brand of tractor that uses an electric clutch and today......most of the LT's have vertical shaft engines and use an electric clutch. However, if you hang around other forums, you won't hear of this happening very often with those brands of tractors that have used electric clutches for a much longer time than Ingersoll has.
Just thought I'd clear up this issue.