imRahulkr
A boat motor works like a car engine. It contains a series of piston heads in cylinders that move up and down. These pistons are connected to a crank shaft, which is turned as the pistons move up and down. The force that drives the pistons and causes them to move up and down is a small explosion of gasoline or diesel fuel. The more fuel pumped into the cylinders, the faster the pistons move and the faster the motor crank shaft spins.
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