Checking The Exhaust Gas At Idle - Yamaha XC50V Service Manual

CHECKING THE EXHAUST GAS AT IDLE

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CHECKING THE EXHAUST GAS AT IDLE
( Measuring the exhaust gas at idle(when air in-
duction system is operation))
1. Stand the scooter on a level surface.
NOTE:
8 Place the scooter on a suitable stand.
8 Make sure the scooter is upright.
2. Install:
8pocket tester1.
(onto the engine oil drain bolt)
8engine tachometer
(onto the spark plug lead )
Pocket tester
90890-03132
YU-03112-C
Engine tachometer
90890-03113
YU-08036-C
3. Start the engine and warm it up until the speci-
fied oil temperature is reached.
Oil temperature
50~70°C
4. Measure:
8 engine idling speed
Out of specification
Refer to "ADJUSTING THE ENGINE
IDLING SPEED"
Engine idling speed
2000 ~ 2400 r/min
5. Install:
8 carbon monoxide and hydrocarbon
tester1.
8 sampling probe2.
8 engine tachometer3.
3-15
CHK
ADJ
Adjust.