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CARBURETOR TUNING
TUNING
CARBURETOR TUNING
The carburetors are set at the factory to run at
temperatures of 0_C X–20_C (32_F X–4_F)
at sea level. If the machine is to be operated un-
der conditions other than those specified
above, the carburetors must be properly ad-
justed. Special care should be taken in carbure-
tor setting so that the pistons will not be dam-
aged or will not seize.
CAUTION:
Before performing the carburetor tuning,
make sure that the following items are set to
specification.
S Engine idle speed
S Throttle cable free play
S Carburetor synchronization
S Starter cable free play
Carburetor tuning data
1. Standard specifications
Type
A
Manufacturer
B
C
I.D. Mark
D
Main jet (M.J.)
Pilot jet (P.J.)
E
Pilot screw (P.S.) Approx 2 turns out
F
Float height
G
H
Idle speed
2-52
INSP
ADJ
BSR37
MIKUNI
8FA100
#135
#17.5
11 X 15 mm
(0.43 X 0.59 in)
1,350 ± 100 r/min
(1,250 X 1,450 r/min)
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