page 40
May 01/2007
Effectivity: 912 Series
Edition 1 / Rev. 0
d04053
INSTALLATION MANUAL
BRP-Rotax
ø30
ø27
36
00776
Fig. 13
(1.42 in.)
(1.18 in.)
(1.06 in.)
11.1) Requirements on the exhaust system
See Fig. 13.
- mean bending radius of exhaust bend : min. 40 mm (1.6 in.)
- exhaust bend, inside dia.: min. 28 mm (1.1 in.)
- muffler volume: approx. 5 l (1.32 US gal)
- back pressure at takeoff performance: max. 0,2 bar (2.9 psi.) (readings
taken approx. 100 mm (3.93 in.)
from exhaust flange connections).
- The 4 exhaust sockets included in the supply scope have to be used without
exception. See fig. 13.
Material of the exhaust sockets: X 6 CrNiTi 1810 (DIN 1.4541)
Tightening torque of the lock nut M8
for the exhaust flange: 12-20 Nm (106 -177 in.lb.) Pay also attention on
SI-05-1997.
■ CAUTION: Fit heat shields near carburetors or as required.
Because of the high temperatures occurring, provide suitable
protection against unintentional contact.
■ CAUTION: Secure exhaust system by suitable means according to instal-
lation.
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