Rotax 912 iS Sport Operator's Manual page 43

Check of fuel
pumps
Effectivity: 912 i Series
Edition 2 / Rev. 0
Step Procedure
1 Rise engine speed up to 4000 rpm.
2 Turn "OFF" Lane selector Switch A. Observe the rev
counter.
Engine speed should not drop/increase more than 250 rpm. If the
fuel pressure is not within the limits, the cause must be determined.
The engine must not be put into service until the problem is rectified.
Step Procedure
3 Turn "ON" Lane selector Switch A.
4 Turn "OFF" Lane selector Switch B. Perform checks
in same way as Lane A.
5
Turn "ON" Lane select Switch B.
6 Reduce to idle speed.
NOTE
Lane A and Lane B have different sensor inputs. During Lane
and Ignition check, some sensor values are not displayed, de-
pending on the activation of the Lanes.
Not available sensor values if Lane A = OFF
and Lane B = ON:
• Coolant temperature
• Exhaust gas temperatures from cyl. 1-4
• Ambient temperature
• Throttle lever position
Not available sensor values if Lane B = OFF and
Lane A = ON:
• Oil temperature
• Oil pressure
It must be ensured, that both fuel pumps are working and no
loss of power or irregular running by deactivation of one fuel
pump occurs. The limits for fuel pressure must not be
exceeded.
Activate both fuel pumps (MAIN and AUX) for the take-off and
landing.
BRP-Rotax
ATTENTION
Page 3-11
January 01 2019