1) Drainage Piping On Airbox And Drip Trays - Rotax 912 ULS 3 Installation Manual

15.1.1) Drainage piping on airbox and drip trays

Effectivity: 912 Series
Edition 1 / Rev. 1
BRP-Powertrain
INSTALLATION MANUAL
▲ WARNING: Connect drainage lines well, otherwise emerging fuel
from a possible leakage could drip onto the exhaust
system.
- The lines have to be routed such that in case of a damage the
surplus fuel is drained off suitably.
- Route the lines without kinks and avoid tight bends
- Route the lines with a continuous decline.
- The lines have to be protected against any kind of blockage e.g. by
formation of ice.
■ CAUTION:
With closed or blocked leakage piping, fuel could end
up on exhaust system. RISK OF FIRE!
■ CAUTION:
The float chamber venting lines (3) lines have to be
routed into a ram-air and vacuum free zone or into the
airbox, according to the requirements and release of
BRP-Powertrain. See section 16. These lines must not
be routed into the slipstream or down the firewall.
Pressure differences between intake pressure and
pressure in the carburetor chambers may lead to
engine malfunction due to incorrect fuel supply.
Connecting nipple (2) for leakage line
outside dia. ø 6 mm (1/4")
slip on length max. 17 mm (11/16")
RISK OF FIRE!
page 92
May 01/2009