MAN-051 ING
23
3.3 CARBURETTOR ADJUSTMENT GUIDE
*
T.O. = TURNS OPEN
Hereinafter are shown some basic carbs. settings according to the engine version (after engine run-in):
F1 engine vers.: “IBEA L7” Ø30
carburettor
H = 1.10 (1 turn and 10’) L = 1.30 (1 turn and 30’)
F2 engine vers.: “IBEA L6” Ø24
carburettor
H = 1.10 (1 turn and 10’) L = 1.25 (1 turn and 25’)
F3 engine vers.: “TRYTON F3” Ø20 carburettor
H = 0.20 (20’) L = 1.30 (1 turn and 30’)
Based on various factors as altitude, ambient temperature etc. it might be necessary to reset the
carb. setting to optimize the performance of the engine.
ATTENTION:
-
Never lean too much as lean mixture will overheat the engine and cause seizure.
-
Do not force H or L closed. It may damage the precision machined orifice and render the carb.
inserviceable.
-
The adjustment of the screw must be performed with warm engine.
( I )
IDLE
ADJUSTMENT
SCREW
( H ) HIGH SPEED FUEL MIXTURE
( L ) LOW SPEED FUEL MIXTURE
RICH
LEAN
1 ¼
T.O.
¾
T.O.
1 ½
T.O.
1
T.O.
*
