Perio
d
ic maintenance an
d
a
d
justment
7-13
7
2. Tap the spark arrester lightly, and
then use a wire brush to remove
any carbon deposits, then clean
the inside of the spark arrester.
3. Insert the spark arrester into the
muffler, install the spark arrester
cap and the bolts, and then tight-
en the bolts to the specified
torque.
TIP
Make sure to align the bolt holes when
installing the spark arrester cap.
EAU39931
A
d
justin
g
the car
b
uretor
The carburetor is an important part of
the engine and requires very sophisti-
cated adjustment. Therefore, most
carburetor adjustments should be left
to a Yamaha dealer, who has the nec-
essary professional knowledge and ex-
perience. The adjustment described in
the following section, however, may be
serviced by the owner as part of rou-
tine maintenance.
NOTICE
ECA10551
The car
b
uretor has
b
een set an
d
ex-
tensively teste
d
at the Yamaha fac-
tory. Chan
g
in
g
these settin
g
s
without sufficient technical knowl-
e
dg
e may result in poor perfor-
mance of or
d
ama
g
e to the en
g
ine.
1. Spark arrester cap bolts
1. Spark arrester cap
2. Spark arrester
Ti
g
htenin
g
torque:
Spark arrester cap bolt:
10 N·m (1.0 kgf·m, 7.4 lb·ft)
UBSR81E0.book Page 13 Monday, April 3, 2023 10:39 AM
