Fuel system
54
Outer
∅∅
∅∅
∅
∅ 3/8"
∅ 3/8" (2)
1/4"-18NPTF
5/8"-18UNF
2
1
1
Inner
∅∅
∅∅
∅
10 mm (3/8")
∅ 10 mm (3/
8")
Copper piping
If copper pipes are used there must be a flexible con-
nection (hose) between the pipe and the engine.
The figure shows a transition from flexible fuel hoses
(1) to copper pipe (2).
Required minimum copper pipe outside diameter from
tank to fuel line and return line is 10 mm (3/8").
Clamp the fuel line. Distance between clamps approx.
300 mm (12").
Piping
All fuel lines should be led and properly clamped near
bottom of the boat to avoid heat absorbing. The air
temperature is lower at the bottom of the engine room.
Rubber hoses
Required minimum inner diameter for the hose from
tank to engine and return hose is 10 mm (3/8").
Only use approved flexible hose.
NOTE! Classification Societies and some registration
bodies (i.e. river authorities) do not permit rubber hos-
es for fuel lines, or require hoses to conform to certain
specifications. Check if the boat is to be used in
these areas.
Clamp the fuel line. Distance between clamps approx.
300 mm (12").
Make sure the hose cannot be damage by any sharp
edges.
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