SETTING
7-7
2. Pilot jet
1
The pilot jet is used in relation to the engine
response at small throttle opening. This is
changed when the jet needle setting is not
enough.
A larger size results in a richer mixture and
a smaller size in a leaner mixture.
Factory-set pilot jet
#42
w
3. Pilot air screw
1
The pilot air screw relates to the engine
response at a smaller opening than for the
pilot jet.
This setting may be changed for want of
time or in emergency, but it is basically set
at the factory-set pilot air screw position.
Factory-set pilot air
Factory set
screw position
w
4. Spark plug
The spark plug heat range is not basically
changed.
Constant attention to the discoloration of
the spark plug and piston head will enable
you to tell to some extent whether the set-
ting is good or bad.
Standard spark plug
R6385-105P/NGK
w
NOTE:
For the effects each setting part has, refer to
“Effects of setting parts in relation to throttle
valve opening” (P7-2).
TUN
Summary of Contents for TZ125M1
Page 1: ...4JT 28199 16 LIT 11626 13 42 OWNER S SERVICE MANUAL TZ125M1 M ...
Page 11: ...MEMO ...
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