The cylinder heads (or cylinder handles) can warp a bit over time. The milling procedure shaves off a skinny layer of steel with Every pass. Soon after ample passes, the cylinder head surface will be beautifully flat which makes certain the cylinder head gasket seals completely. Connecting rods are machined https://outboardmotorsfreeshippin93579.affiliatblogger.com/80794446/the-boat-outboard-motor-diaries