3
ADJUSTMENTS
40
EN
To properly adjust the idle speed, follow these steps:
UÊ
Tighten the air adjustment screw no. 2 fully and then loosen it up to the value described
in the carburetor setting table (page 13)
UÊ7>ÀÊÌ iÊi}iÊvÀÊ>««ÀÝ°ÊxÊÕÌiÃ]ÊÕÌÊÌ iÊ«iÀ>Ì>ÊÌi«iÀ>ÌÕÀiÊÃÊ>ÌÌ>i`°
UÊ-ÜÞÊÌÕÀÊÌ iÊ>ÀÊ>`ÕÃÌiÌÊÃVÀiÜÊ
2
clockwise, until idling starts diminishing.
UÊ>ÀÊÌ iÊ«ÃÌ]ÊÌ iÊÃÜÞÊÌÕÀÊÌ iÊ>ÀÊ>`ÕÃÌiÌÊÃVÀiÜÊ°Ê
2
counterclockwise, until
idling decreases again.
UÊ`ÕÃÌÊÌ iÊÃVÀiÜÊLiÌÜiiÊÌ iÃiÊÌÜÊ«ÃÌÃ]Ê>ÌÊÌ iÊ } iÃÌÊ`}Ê«Ì°°
If a remarkable increase in the rpm occurred during the adjustment above, idling is to be
reduced and taken back to the normal level, and then execute the above procedure.
If no satisfactory results are obtained after the procedure, this may be due to an incorrect
slow-running jet.
If the air adjustment screw has been thoroughly tightened, but the rpm have not varied, a
lower size slow-running jet is to be used.
Execute the adjustment procedure again after replacing the jet.
NOTE:
The correct idling should be between 1700 and 1800 rpm.
CARBURETOR SETTINGS ACCORDING TO THE WORKING CONDITIONS
See the following tables to adjust the carburetor settings according to ambient tem-
perature and altitude.
Legend:
SLM
Above sea level
AVA
Air screw opening (from all closed)
Gm
Slow jet
SPL
Needle
POS
Needle position (from top)
GM
Main jet
VLV
Valve
Standard settings
Summary of Contents for RR 250 2T EUROPA 2019
Page 1: ...2019 OWNERS MANUAL 250CC 300CC STANDARD EDITION ...
Page 38: ...36 EN ...
Page 50: ...48 EN ...
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