Trying to help out my neighbor with her mod 1050 Cub Cadet problem.
sv720 engine with 500 hrs. Starts ok, new battery last year, shows 13.7 v with engine running so I think the charging system is good.
When she mows it runs fine for about 30-45 minutes then starts misfiring, almost sounds like a rich fuel condition but no black smoke.
I told her next time it does it, shut the thing down without touching the throttle or anything. I looked at the plugs and they looked normal. I replaced them with new anyway and the problem is still there.
Checked fuel system including breather on filler cap - couldn't see anything wrong. Air cleaner good.
I suspect it is an ignition breakdown rather than fuel because it runs fine for awhile.
I pulled off the engine cowl. The cylinder fins etc were clean - no obstructions or anything to cause overheat.
Compression is 180 both cylinders.
At this point I am looking at the ignition modules (my first thought), but @$70 ea. that an expensive guess.
I don't have any special diagnostic tools, just a multimeter and the usual stuff.
Is it time to haul it to the shop?
sv720 engine with 500 hrs. Starts ok, new battery last year, shows 13.7 v with engine running so I think the charging system is good.
When she mows it runs fine for about 30-45 minutes then starts misfiring, almost sounds like a rich fuel condition but no black smoke.
I told her next time it does it, shut the thing down without touching the throttle or anything. I looked at the plugs and they looked normal. I replaced them with new anyway and the problem is still there.
Checked fuel system including breather on filler cap - couldn't see anything wrong. Air cleaner good.
I suspect it is an ignition breakdown rather than fuel because it runs fine for awhile.
I pulled off the engine cowl. The cylinder fins etc were clean - no obstructions or anything to cause overheat.
Compression is 180 both cylinders.
At this point I am looking at the ignition modules (my first thought), but @$70 ea. that an expensive guess.
I don't have any special diagnostic tools, just a multimeter and the usual stuff.
Is it time to haul it to the shop?
Kohler sv720 missisn after warm up
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