CONTROL SYSTEM
3-7
E
CHK
ADJ
EXHAUST GAS CONTROL
PROCEDURES
1. Installation:
• Exhaust probe set
Setting steps
(1) Remove the 8 mm bolts and their
washers.
(2) Install the exhaust gas probe .
(3) Connect the 3 hoses between the
probes and the surge tank .
(4) Connect the gas analyzer hose to
the surge tank.
2. Preparations for measuring:
• Engine temperature
Warming up steps
(1) Run the engine in neutral at the speci-
fied speed for 15 minutes .
(2) With shift in position rev the engine 3
times .
(3) Keep, in neutral again, the specified
speed for 1 minute .
(4) Stop the engine and check the engine
oil temperature.
(5) Keep the engine running or let it cool
down until the specified temperature is
obtained.
NOTE:
• The periodical exhaust gas test should
be done without the top cowling.
• Shift in neutral during exhaust gas test.
• Calibrate the gas analyzer before mea-
surement.
2
5
4
3
1
a
bb
c
2,000
1,000
r/min
5101520min
Engine speed
2,000±200 r/min.
Engine speed during the official
test
1,000±100 r/min.
Engine oil temperature
60±10 °C (140±50 °F)
1
2
3
4
5
a
b
c
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