PAGE 48
SERVICE MANUAL
Fuel System
Checking fuel level:
CAUTIoN
• Check again to ensure float valve and float are properly installed.
•To ensure correct measurement, position the float meter in such a way so that the float chamber face is vertical
to the main jet.
Fuel level: 31.5±0.5mm
Installation of carburetor:
• Install carburetor in the reverse order of removal.
• Following adjustments must be made after installation.
• Throttle cable adjustment.
• Idle adjustment
Adjustment of idle speed:
CAUTIoN
• Air screw was set at factory, so no adjustment is needed.
Note the number of turns it takes to screw it all the way in for
ease of installation.
• Use a tachometer when adjusting engine RPM. Screw in air
adjustment screw gently, then back up to standard turns.
• Standard turns: 2-1/2 turns
• Warm up engine; adjust the throttle stopper screw of throttle valve to standard RPM.
• Idle speed rpm: 1500 ± 100 rpm
• Connect the hose of exhaust analyzer to exhaust front end. Press test key on the analyzer.
• Adjust the pilot screw and read CO reading on the analyzer.
• CO standard value: 1.0-1.5 %
• Accelerate in gradual increments; make sure rpm and CO value are in standard value after engine running in
stable. If rpm and CO value fluctuated, repeat the procedures described above for adjusting to standard value.
Float Gauge
Summary of Contents for 1500
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