109 redo

[ricks]

Well the "86" is done for the most part, except for a few minor details. I would like to put a 36" snwblower on her for this winter, but Mama said "finish what's on your plate and then you can have dessert". Sooooo, I hauled the 109 up onto the bench and began dis-assembly. Since it was going uphill anyway, I decided to drain the tranny. Engine breakdown went smooth until I saw this under the breather cover. I've never seen this on any Kohler I've taken apart, maybe on an old Techumseh. I'm not sure if this was caused by wear or from something else. It's on the exhaust side which means what again? With all the weeds and crud I took out of the inside framework, I was expecting to find some sort of critter home. Oh well, keep moving forward. I found what looks like crystallized sludge in the differential. This is a hydro unit. Do I need to flush the whole system, or is breakdown and wash a better solution. Hydro's are new to me so any info would be helpful. I've already read the manual, but it doesn't say anything about flushing or cleaning. just breakdown and rebuild. Also found a tag w/ these #'s, (top row) 69186C91, (middle row) 90-1074, (bottom row) 02-NA 4732P. I'm assuming these are model and serial but what do they mean? Where can I look these up for reference? as long as this Indian summer keeps up, I'll be you know where. more pics after the battery recharges on the camera.