Yamaha SZR 660 Service Manual page 121

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CARBURETOR
H-9
6.
Remove:
• Top cover
(1)
• Gasket
(2)
•
Screw
(3)
(connecter comp.)
7.
Remove:
•
Throttle lever
(1
•
Roller
(2)
• Cable support
(3)
8.
Remove:
Throttle shaft
(1
#
Spring
(2)
•
Throttle
valve (with
connecter camp.
9.
Remove:
Connecter comp.
Needle
jet (2)
Throttle valve
(3)
1)
Secondary
carburetor
1.
Remove:
• Plug(1)
•
Gasket
(2)
• Main
jet
(SEC.)
(3)
• Needle
jet
2
(4)
CARBURETOR
2.
Remove:
• Top
cover
(1)
• Spring
(2)
3.
Remove:
• Piston valve
(1)
• Needle
jet
(2)
INSPECTION
1
Inspect:
•
Carburetor
body
Soiled
*
Clean.
•
Float
chamber
Cracks/Damage -* Replace.
• Fuel passages
Obstructed
-#
Clean.
NOTE:
Use petroleum-based solutions
to
clean carburetor
body (never use
caustic solution).
Clean
all
passages and
jets
with
compressed
air,
2. Inspect:
• Valve housing
(1)
•
Needle
valve
(2)
Wear/Corrosion ->
Replace.
•
O-Ring
(3)
Damaged
-> Replace.
NOTE:
-
Always replace
the
needle valve
and
the valve
housing
together.
3.
Inspect:
•
Throttle
lock
knob
(1)
Damaged -*
Replace.
•
Starter cylinder
(2)
Wear/Damage
-> Replace.
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