Carbon must be removed from PistonHeads with the carbon scraper. Never use a wire brush, as particles of carbon or a strand of wire from the brush are liable to be forced between piston and cylinder wall with possibilities of scoring.

Before replacing cylinder head poor at least a tablespoon of engine oil around the edge of each piston to ensure sufficient lubrication when engine started. When engine is the really warmed up it will be found that cylinder head nuts can be taken up slightly. Attention to this detail prevents any possibility of gasket blowing out.