Engine and propeller shaft must line up perfectly. Before tightening the flange bolts, use a feeder
gauge to make quite sure the shaft flanges contact each other all the way round. After launching,
recheck that no bending loads have developed between the propeller shaft and the engine due to
changes in the shape of the hull.

All coolant pipe lines should be of copper and run with as few and smooth bends as possible.
Connect the exhaust pipe to the engine so that there are no bending loads and run it aft with a
few and smooth bends as possible. The pipe should discharge high enough above the surface of the water to prevent water splashing in when the engine is not running. Fit a drain cock at the
lowest point of the exhaust pipe. Check that no other water locks can arise in the pipe line.

Install fuel tanks and pipe lines with great care in order to prevent fuel leakage. Keep in mind that
the fuel tank must be placed at least 250 mm ( 10 in ) higher than the injection pump, if the engine
is not equipped with feed pump. If there is a feed pump, remember that it's max. suction height
is 2000 mm ( 6' 63/4" ).

Fit a belt and flywheel guard to protect the moving parts of the engine. It can take the form of a
light angle-iron structure, covered with wire and attached to the engine bed by wing nuts for easy
removal. If an engine casing is fitted, this provides sufficient protection and no belt and flywheel
guard is required.