rick 255 #1 Posted June 26, 2022 I thought I had seen a post/thread on what needs to be removed to gain access to the valve spring chamber to adjust the valve, but several searches were futile. I am it is on me and my poor computer skills. Can I get some help on this, please? Share this post Link to post Share on other sites
Jeff-C175 7,206 #2 Posted June 26, 2022 Rick, go to YouTube and type this --> onan p216 valve adjustment <-- into the search box. A couple videos came up which I did not watch. Don't know if they're any good or not... check it out... 2 Share this post Link to post Share on other sites
lynnmor 7,815 #3 Posted June 26, 2022 YouTube videos will give you some nice pictures to see the inner workings of the engine, but much of the information is poor at best. You should put some penetrating oil on all the fasteners, that might be disturbed, every few hours till you begin the work. You will be removing the exhaust, the intake with the carburetor, the spark plugs and then the valve covers. Clean things as you go, a shop vacuum is helpful in removing dirt that may fall inside. A wad of paper towel in the oil return holes is a good idea till you are ready to reassemble. You will need genuine Onan intake, exhaust and valve cover gaskets, most cheap gaskets are junk. This would be a good time to glass bead the muffler and other rusted parts, and then paint them. I use Rustoleum High Temperature paint on the muffler and Dupli-Color engine paint on the rest. The intake manifold should be checked for leaks and look for where the heat shields may have cut into it, then provide some clearance. The valve covers may need painted as well since they collect water and dirt. Choose a valve to adjust and then turn the engine by hand till that valve spring is compressed the maximum, mark the inner pulley with chalk and then turn it one full turn. now adjust that valve. Do this three more times. Be sure that you note whether it is an exhaust or intake valve. Many think that the engine needs to be at top dead center to adjust but this method is better and less error prone. It would be helpful to clean the threads with a tap and wire wheel the bolts. One drop of oil should be on the bolt threads. When reassembling, use a 1/4" drive torque wrench and do not over-tighten. 1 1 Share this post Link to post Share on other sites
