SETTING
7-2
That is:
• Higher temperature expands the air with its
resultant reduced density.
• Higher humidity reduces the amount of oxy-
gen in the air by so much of the water vapor
in the same air.
• Lower atmospheric pressure (at a high alti-
tude) reduces the density of the air.
EC714032
Effects of setting parts in relation to throttle
valve opening
NOTE:
The power jet closes at 12,300 rpm of the
engine, after which only the main jet domi-
nates.
1
Throttle valve opening
2
Full-open
3
Full-closed
EC71E003
Basic process of carburetor setting
Ex-factory setting is on the richer side, which
should basically have no problems with the
brake-in procedure.
Refer to “STARTING AND BREAK-IN” section
in the CHAPTER 1.
1. Adjustment of main jet
Use a main jet
1
with a smaller calibration
number if the engine does not develop
more than 12,000 rpm after a few laps of
the circuit when the water temperature
becomes stable [55°C (131°F) or more].
Example:#580
≥
#560
TUN
7
Summary of Contents for TZ250M
Page 1: ...5KE 28199 10 LIT 11626 13 41 OWNER S SERVICE MANUAL TZ250M1 M ...
Page 11: ...MEMO ...
Page 15: ...CHAPTER 7 TUNING ENGINE 7 1 CHASSIS 7 14 ...
Page 287: ...99 9 0 1x1 ...
