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Rotary Valve Adjustment
Installation:
To correctly install the rotary valve disc proceed as follows:
- Turning crankshaft counter-clockwise
(drive pulley side), bring
.
magneto side piston to Top Dead Center using a T.D.C
o
gauge.
-.
- Position the rotary valve disc on gear to have edges as close as
possible to the marks.
NOTE: The rotary valve disc is asymmetrical, therefore, at assembly
try positioning each side of disc on gear to de:termine best
installation position. See also page no. 24
CARBURETOR
The BING carburetor is a piston type carburetor with float
chamber.
The carburetor can be adjusted by jets and adjusting
screws. Changing of jets should only be done by a specialist
or after consulting the engine manufacturer.
The air-fuel mixture at idle speed is adjusted by the air
adjusting screw (see ill. no.
28).
The idle r.p.m. is adjusted by the carburetor piston adjust-
ment screw (ill. no.
30).
Note: The carburetor must be in an exact right angle position
in
relation to the crankshaft in both views from top and
from the intake side to ensure an equal mixture distri-
bution to both cylinders. Take care that end of both
ventilation tubes (ill. no.
31)
are protected from
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