Had an 1115 hopper cooled with electric start. Changfa. Ran it for about four years and 5,000 hours, running an edger.
Had a guy I was friendly with, and he bought it then, and used it to pump water on his farm out of Spokane, Washington from a small stream up a hill to another pump for running guns for irrigating grass hay. He ran it three years more, all summer, and put on another 7,000 hours or so. He left it out that third winter, and it froze bad.
His wife chewed me out that winter when i called for selling him junk, and he never returned that call. Am not friendly with him any more.
To my knowledge, it never used anything. We washed the oil filter out every 250 hours , as well as the fuel filter every 1,000 hours. We did adjust the valves, and ran them loose. It was damned noisy, but a hell of a workhorse for a single.
Would like two or three more of them.