lost count on the tractors.. 14 sounds about right.
still 13 ac as listed in my profile.
And right now I'mmowing 2x per week here in florida.
Can't say that I have any problems with spark plugs.. even the 2 cycle stuff like weed eaters and chain saws.. etc. I usually clean the small engine plugs once per year ( blast style plug cleaner ). and regap then reinstall. usually only toss a plug now if it has insulator damage.
I save older plugs for use when painting.. thread them in then paint.. etc.
the odd plug failure now and then, I damaged electrode or insulator.. or threads or whatnot will get them tossed. I'm pretty much buying tune up parts whenever I buy a new- to- me machine, that way I know it is starting with good points and plugs.. past that I'm getitng excelent lifespan out of points and plugs. I avoid using cheap points like tisco points whenever possible. I have a jam jar full of tisco points from old ignition kits that I keep as backup.. but generally I like standard ignition or blue streak ignition parts. better rubbing block like, better looking breaker contacts.. plus you can get HD pierced points in the premium brands. The tecn to clean good with white coarse typing paper. As uch as I like my 6v gassers.. the diesels are slowly spoiling me.. I'm way glad my 5000 is a diesel and not a gasser.. as much as it mows.. I'd constantly be fueling it if it was a gasser..
At work,over half of our equipment is diesel. Still.. we have quite a few gas machines.. especially rollers from the 60's, a couple gasser grade-all units, a mixer, and an asphalt distribuitor.. littleford with some etnyre parts.. that unit is running an old redseal engine.
I'd say that we are lucky in the 'engine rebuild dept' partially due to good maintenance habits, but since I have been at the company, we have rebuilt the following engines:
80's toyota pickup gasser.. needed bearing shells.. belonged to an employee
90's eara jd trackhoe, diesel ( head rebuilt )
79 jd 2240 diesel ( head work ) ( pto ind clutch as well )
1 each cummins 285, 290 , 300 diesel. 1 ate a supercharger, one ate an oil pump drive, and the other was a salvage engine we picked up used as a replacement and we rebuilt it before running it as 'insurance'
cat 3208 .. (diesel) simply got weak.. well worn
so far I don't see a fuel connection yet
soundguy