Fuel Supply - Beta Marine Beta 10 Operator's Maintenance Manual

DRY EXHAUST SYSTEM
The exhaust system installed in a
canal boat or work boat with a dry
exhaust should be
1 1 / "
2
The engine is fitted with a 1
connector when a dry exhaust system is
specified. A flexible exhaust bellows and
dry exhaust silencer should be used. It is
up to the installer to work out his own
pipe run but care should be taken as
follows:
FUEL SUPPLY & LEAK OFF -
9
(1) Fuel tank
(2) Injection pump
(3) Injection nozzle
(1) Ensure that rain water cannot
enter the exhaust port and run
back down the system, flooding
minimum ID.
the silencer and eventually the
1 / " BSP male
2
engine.
(2) The system should be lagged if
there is any danger of the crew
getting near it.

A typical system is shown below
1 12
11
(4) Injection pipe
(5) Mechanical fuel feed
pump with priming lever
(6) Fuel filter
Ensure exhaust raises then falls to outlet
8
7
(7) Fuel water separator
(8) Overflow/leak off
(9) Drain plug
29
(3) A dry exhaust system will give off
considerable heat and suitable
ventilation must be provided.
(4) The exhaust back pressure should
not exceed 3.1 inches of Hg.

4
2
3
5
(10) Air vent
(11) Stop cock
(12) Fuel pipe loop
10
6