IthacaJeff 151 #1 Posted July 7, 2009 Hi all: I've got a newly acquired and beat up 416-8 with a Kohler K341 16hp engine. After replacing the cylinder head and testing it out with an hour of easy mowing, I took the tractor to a piece of land to do a bit of brush hogging. For about 15-20 minutes it worked great. . . the tall grass was no match for it. Then it starting bogging down some, so I went to a lower gear. . . but after a bit it started bogging down under load some more, and then started a nasty knock or rattle. I powered down and took the tractor home. After getting it home I started it up again and mowed for about 20 minutes with no knock or problems. The tractor is missing the engine sheet metal that covers the head. . .I'm guessing this helps run air over the head cooling fins. Could this be part of the problem? Any suggestions? Thanks, Jeff in Ithaca Share this post Link to post Share on other sites
WheelHorse_of_course 99 #2 Posted July 7, 2009 I would tend to agree with your hypothesis. Air cooled engines are carefully designed to get air to all the right spots. Best of luck Share this post Link to post Share on other sites
perry 82 #3 Posted July 7, 2009 get the sheet metal on there. but i would bet you need to set the timeing. no let go to long. timing is important. Share this post Link to post Share on other sites
