BRP-Rotax
MAINTENANCE MANUAL LINE
CHECKING THE CARBURETOR ACTUATION
General note
Route bowden cables in such a way that carburetor actuation will not be influenced by any
movement of engine or airframe, thus possibly falsifying idle speed setting and
synchronization.
NOTE
Each carburetor is actuated by two bowden cables. At position connection for
throttle valve, and at position connection for choke actuation.
m
WARNING
Non-compliance can result in serious injuries or death!
Use Bowden cable with minimized friction so that the spring on the throttle can open
the throttle completely. Otherwise increase pretension of spring by bending lever flap or
fit a stronger return spring, or a cable with pull-push action would have to be used. Se-
cure the bowden cable sleeves in the adjustment screws (e.g. safety wire).
m
WARNING
Risk of life threatening injuries caused by propeller!
With carburetor actuation not connected, the throttle valve is fully open. The initial posi-
tion of the CD carburetor is full throttle! So never start the engine with the actuation
disconnected.
Procedure
To test the carburetor actuation the following steps are necessary:
Step
Procedure
1
Inspect bowden cables and levers for free movement.
2
Bowden cable must allow full travel of lever from stop to stop.
3
Adjust throttle cables to a clearance of 1 mm (0.04 in).
4
Inspect and lubricate linkage on carburetor and carburetor joints with en-
gine oil.
5
Inspect return springs and inspect engagement holes for wear.
Page 38
January 01 2020
Effectivity: 912 Series
Rev. 0
