Yamaha YJ125S Service Manual page 60

CHECKING THE EXHAUST GAS AT IDLE
NOTE:
8 Since it is necessary to insert the sampling
probe 600mm into the exhaust pipe, be sure
to use a heat-resisant rubber tube as shown
in the illustration.
8 Be sure to set the heat-resistant rubber tube
so that exhaust gas does not leak out.
8 Before using the carbon monoxide and hy-
drocarbon tester, be sure to read the user,s
manual.
6. Measure:
8 carbon monoxide density
8 hydrocarbon density
Carbon monoxide density ( when air
induction system is operating )
0.2%~1.4%
hydrocarbon density ( when air in-
duction system is operating )
1000ppm below
Out of specification
tion system.
Refer to "AIR INDUCTION SYSTEM" in
chapter 6.
3-12
CHK
ADJ
Check air induc-