19. EVAPORATIVE/EXHAUST EMISSION
CONTROL SYSTEM
EXHAUST EMISSION TEST
AND ADJUSTMENT
1. Start the engine and warm up for
several minutes. (Engine surface
temperature 60℃～80℃)
2. Adjust the idle speed to 1600±100 rpm.
3. Connect the emission tester sampling
pipe to the exhaust muffler.
Standard: CO: 1.2±0.3 max.
HC: 500PPM max.
4. If CO or HC exceeds the specified
values, adjust the carburetor pilot screw
(P.S.) until CO and HC are within the
specified standard values.
5. If the adjustment of carburetor makes
no difference, inspect exhaust emission
related system.
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