25
AIR & FUEL SYSTEM
Max speed
NPTGSS2617A (straight shaft)
About 9000-9300RPM
NPTGCP2617A (curved split
shaft)
About 7500-7800RPM
Fig. 31
Ŷ5HPRYHWKHFDUEXUHWRUDGMXVWPHQWWRRODQGUHFKHFNWKHPD[QRORDGVSHHG(QJDJHDQGUHOHDVH
the throttle trigger quickly to operate the trimmer at full throttle, and observe the RPM displayed on
WKHWDFKRPHWHU0DNHVXUHWKHPD[VSHHGLVFRUUHFW
Ŷ$GMXVWWKH/VFUHZZKLOHWKHWULPPHULVLGOLQJWXUQWKH/VFUHZFORFNZLVHXVLQJWKHFDUEXUHWRU
DGMXVWPHQWWRRO2EVHUYHWKH530GLVSOD\HGRQWKHWDFKRPHWHUXQWLOLWUHDFKHVWKHPD[VSHHG)LJ
7KLVPD[VSHHGFRXOGEHJUHDWHUWKDQRUOHVVWKDQ530
Ŷ$GMXVWWKH7VFUHZ
,IWKHPD[VSHHGDGMXVWHGLQSUHYLRXVVWHSLVJUHDWHUWKDQ530WXUQWKH7VFUHZFRXQWHU
clockwise using the screwdriver. Observe the RPM displayed on the tachometer until it reaches
about 4000 RPM.
,IWKHPD[VSHHGDGMXVWHGLQSUHYLRXVVWHSLVOHVVWKDQ530WXUQWKH7VFUHZFORFNZLVH
using the screwdriver. Observe the RPM displayed on the tachometer until it reaches about 4000
RPM.
Ŷ$GMXVWWKH/VFUHZWXUQWKH/VFUHZFRXQWHUFORFNZLVHXVLQJWKHFDUEXUHWRUDGMXVWPHQWWRRO
Observe the RPM displayed on the tachometer until the idle speed reaches about 3000 RPM (Fig.
32).
CLOCK SET
A
B
C
D
E
F
G
RESET
9300
rpm
Fig. 30
CLOCK SET
A
B
C
D
E
F
G
RESET
4650
rpm
CLOCK SET
A
B
C
D
E
F
G
RESET
3130
rpm
Fig. 32
