Yamaha GP800R WaveRunner 2003, Service Manual

Page: 74 / 247

4-23
FUEL
E
CARBURETOR
SERVICE POINTS
NOTE:
Before disassembling the carburetor, make
sure to note the number of times the pilot
screw is turned in from its set position to
the seated position.
CAUTION:
Do not use steel wire for cleaning the jets.
This may enlarge the jet diameters and
seriously affect performance.
Diaphragm inspection
1. Inspect:
●
Diaphragm
Damage
→
Replace.
Accelerator pump body inspection
1. Inspect:
●
One way valve
Crack/damage
→
Replace the acceler-
ator pump body.
●
Fuel passage
Clog
→
Clean or replace.
Arm inspection
1. Inspect:
●
Arm 1
Bends/damage
→
Repair or replace.
2. Measure:
●
Arm height
a
NOTE:
●
Measure the distance between the surface
of the carburetor body
b
and the top sur-
face of the arm.
●
The arm should be resting on the needle
valve, but not compressing it.
Arm height:
0–0.2 mm (0–0.008 in)