Disassembly; Assembly - Yamaha SZR 660 Service Manual

CARBURETOR
s"
4. Inspect:
• Diaphragm
(1)
(piston valve)
• Diaphragm
(2)
(enrichment)
Damaged
-» Replace.
5.
Inspect:
• Needfe
jet
(1
)
(primary)
• Needle
jet
(2)
(secondary)
Curvature/Wear/
Damage
-* Replace.
6. Inspect:
Throttle valve
(1
)
(primary)
• Piston valve
(2)
(secondary)
Wear/Damaged
->
Replace.
m
7.
Check:
• Free movement
Hampered ->
Replace.
Fit
the
throttle
valve
and
piston valve
into
the
carburetor body and check
that
movement
is free,
[A]
Primary carburetor
[B]
Secondary
carburetor
8.
Inspect:
• Float
(1)
Damaged
-> Replace.
6-9
CARBURETOR
9.
Inspect:
Main
jet
(1)
(primary)
Main
jet (2)
(secondary)
Needle
jet
1
(3)
(primary)
Needle
jet
2
(4)
(secondary)
O-ring
(5)
(needle
jet
1)
Piiot jet (6)
NOTE:
Clean
jets with
compressed
air.
ASSEMBLY
Perform
"DISASSEMBLY"
operations
in
reverse
order.
Pay
attention to the following points.
CAUTION;
Wash
all
parts
with
clean petrol prior to
reassembly. *
Always use new
gaskets.
Secondary
carburetor
1. Install:
Needle
jet
(1)
• Piston valve
(2)
NOTE:
Draw
the
diaphragm
tab
level
with the notch
on
the
secondary
carburetor.
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j
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il
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2. Install:
Spring
(1)
•
Top cover
(2)
Screw
(top cover):
2
Nm
(0.2
mkg)
s£%
\
t
\
-
1
T^'
$
2
m
Sr
3
3. install:
• Needle
jet 2(1)
• Main
jet (2)
(secondary)
• Plug
(3)
Main
jet:
2
Nm
(0.2
mkg)
Pfug:
9
Nm
(0.9
mkg)
6-10