page 54
May 01/2007
Effectivity: 912 Series
Edition 1 / Rev. 0
d04054
INSTALLATION MANUAL
BRP-Rotax
12.6) Requirements on the cooling system
■ CAUTION: All components of the cooling system have to secured suitably.
▲ WARNING: The size and layout of the cooling system must be designed to
keep the operating temperatures within the specified limits.
To minimize flow resistance employ radiator with low flow
resistance and parallel flow as realized on the original ROTAX
radiator and use short hoses and pipelines.
Coolant hoses:
- temperature durability: min. 125 °C (257 °F)
- pressure durability: min. 5 bar (73 psi.)
- nom. inside dia : 25 mm (1")
- bending radius: min. 175 mm (7")
- material: Suitable for 100 % Glycol and antifreeze agents.
Pay CAUTION to ozone stability!
■ CAUTION: Hoses exposed to direct heat radiaton of exhaust system, have
to be protected with heat-resistant protection tubes.
◆ NOTE: If installation require longer distances use aluminium pipes (25
mm (1") inside dia.) instead of hoses. These should have a
bulge (1) in order to prevent coolant hoses becoming loose.
09158
1
Fig. 25
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