RDG603A17 – Issue 1 – Shire 30_40_50 WB/RB Manual
Page 19 of 51
fittings and silencer (if fitted), must not be smaller than 1
½
” BSP. Exhaust silencers, flexible
exhaust hose connections and lagging blanket are all available as optional extras:
Part Description
Part Number
Exhaust Coupling 1
½
” x 1
½
” BSP
RDG1916
Exhaust Silencer DSA-38
RDG1911
Flexible Exhaust Hose (18”)
RDG1879
Blanket 18” Flexy Exhaust
RDG2477
•
Make sure the exhaust increases then decreases in height as shown above.
River Boat with Water Injected Exhaust:
If the engine is installed low down in the boat, below the outside water level, a system such
as a Lift Silencer with a siphon break system, must be used to prevent sea water from
flowing back down the exhaust and into the engine.
•
Lift Silencer
The correct installation of the lift silencer is vital to safety, and to avoid back flooding of
the engine.
Figure 6
shows how to install the lift silencer correctly (Note: Halyard (M&I)
Limited have given Barrus permission to use the diagram).
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