Husqvarna F2101U0, Owner'S Manual

Page: 104 / 137

15 TUNING THE ENGINE
102
400192-11
–
Turn barrel adjuster
2
so that there is play
A
in the throttle
cable at the throttle grip.
Guideline
Throttle cable play 2 … 3 mm (0.08 … 0.12 in)
–
Tighten nut
3
.
–
Slide on sleeve
1
.
Finishing work
–
Check the throttle grip for smooth operation.
–
Install the fuel tank. ( p. 65)
–
Install the right side cover. ( p. 64)
–
Mount the seat. ( p. 59)
–
Install the air filter box cover. ( p. 59)
–
Check throttle cable play. ( p. 101)
15.3 Carburetor tuning
Effects of carburetor tuning
H01400-01
The different carburetor components must be tuned both to one another and for the use intended.
Main jet MJ
The main jet MJ has the greatest influence with the throttle slide open (full throttle).
If the insulator of a new spark plug is very light or white after a brief ride at full throttle, or if the engine knocks,
a larger main jet needs to be used. If the insulator is dark brown or sooty, a smaller main jet needs to be used.
Needle position POS
The needle position has the greatest influence in the mid throttle slide range.