If the cylinder heads are on the engine, you will need to add air pressure to the cylinder to hold the valves in place. Our example is the Craftsman 47089 compression test kit using the 14mm long ...
01 Remove all the parts in the way of the valve cover: seat, tank, shrouds and, on some models, the radiators. Undo the bolts and pop off the valve cover taking care not to damage the rubber gasket.
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