Posted by Blue_Tractor_Man on October 18, 2010 at 12:54:31 from (66.193.226.74):
I have three (3) Kubota ZB600 two cylinder 12 HP diesel water cooled engines driving agricultural spray pumps. It seems that once or twice each season the engines get hard to start and begin puffing a little white smoke. The compression drops. It is always the valve clearance and it seems to only affect the intake valves. We open the valve clearance back up and the problem goes away.
What would cause these little engines to lose valve clearance? Could it be the ULS diesel? Do you think these engines have hardened valve seats? They stopped making them about 4 years ago.
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Today's Featured Article - The 8N and the Fox - by Zane Sherman. Dec. 13 1998, Renfroe, Alabama. Last niht I dreamed about the day that I plowed the field of about 10 acres over on what Jimmy and Dandy called the Ledbetter field. I was driving the 1948 8N Ford tractor that Jimmy bought in 48 new This was prebably in about 1951 and maybe even befor the house was built. This would have made me to be about16 years old and I drove the tractor for nothing and would have paid to drive it if I had had any money which I didn't, but neit
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