Technical data

Section 06 FUEL SYSTEM
Sub-Section 03 (CARBURETORS)
06-03-7
TYPICAL
1. Pilot jet
2. Gasket
3. Main jet
4. Check valve housing removed
11, Check Valve Assembly
The check valve is needed if a back pressure oc-
curs into carburetor. It will prevent fuel from flow-
ing back into carburetor lower portion.
Inspect check valve, it should be free of holes,
tears or imperfections. Replace as needed.
1. Check valve
NOTE : Prior to check valve assembly instal-
lation, remember to set gasket.
3,12, Diaphragm and Cover
Install diaphragm with its integrated O-ring into
carburetor groove. Make sure that the tab of cov-
er is inserted into carburetor notch.
13, O-ring
When installing O-rings of low speed and high
speed screws, apply some BOMBARDIER LUBE
(P / N 293 600 016) to prevent sticking.
CARBURETOR INSTALLATION
At installation, pay attention to the following :
Install carburetor(s) with gasket(s) to intake mani-
fold (rotary valve cover for the 787 engine).
Single Carburetor Models Only
Install lock washers and apply Loctite 242 (blue)
on threads then torque nuts to 25 N•m (18 lbf•ft).
Twin Carburetor Models Only
Apply Loctite 242 (blue) on screw threads. Then,
install screws with lock washers and torque to 20
N•m (15 lbf•ft).
SYNCHRONIZATION OF TWIN CARBURETORS
With idle speed screw not touching throttle lever
stopper on MAG carburetor, both throttle plates
are in closed position.
1. Stopper
2. Idle speed screw
Loosen jam nuts on carburetor linkage and adjust
linkage with adjustment nut.
Make sure threads length is the same on each
side of linkage and flat surfaces of both ends are
parallel with each other.
1
F01F11A
2
3
4
F01F12A
1
F01F31A
1 2
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