Ok let's open up a big can of worms here. If you do find that it is the oil seal leaking make sure the clutch is grounding properly. If the clutch loses it's ground it will try to ground through the crankshaft and normally eats up the lower main bearning. This was a problem back in 95 & 96 and it seems to be coming back. I've seen about a dozen of these this year.BODIDDLY said:kohler 25 hp cv25s spec 69513. slow leak coming from under the engine.its not leaking at the gasket but under the engine..is there a gasket thats in the pto clutch area?
Thanks for your reply. No offence intended but, I don't like your answer. I'll have to check it out this weekend.If it's like a lot of them I have seen you will need a new oil pan and possibly a new crankshaft and for sure a new clutch. Check and see if you can wiggle the crankshaft back and forth at all. If the bearing is eaten up badly enough the crank will move back and forth. If an electric clutch grounds internally it will usually keep working but the bad thing is it is now seeking a ground through the crankshaft. The crankshaft isn't actually grounded but is riding on a thin film of oil on the main bearings. Now when the clutch seeks a ground through the crank electricity arcs through that thin film of oil and like a mini arc welder eats away at the bearing surface until it gets sloppy and the seal starts leaking. At this point the oil pan is toast. Sometimes the crankshaft can be salvaged but if it were mine I would replace the pan and the crank unless the flywheel side main bearing is damaged too in which case it will need a short block. If your unit is still under warranty check with your equipment dealer. This would be something handled by the equipment manufacturer and not the engine manufacturer.