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Service Manual Mitsubishi SL-Series diesel engines
Version 08/2004
ENGLISH
IDLE RPM SETTING MAINTENANCE
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MAINTENANCE
52 IDLE RPM SETTING
1. Start and run the engine at low idle until the coolant
temperature is above 60°C (140°F).
2. To set the low idle speed, loosen the lock nut for
the idling set bolt and turn the set bolt to make the
engine run at the specified rpm. Tighten the lock
nut.
3. To set the high idle speed , loosen the lock nut for
the high-idle set bolt and turn the set bolt to make
the engine run at the specified rpm. Tighten the
lock nut.
Figure 268 Idle speed setting
High idle position
Low idle position
Idling set bolt
High-idle set bolt
Lock nuts
NOTE
Make sure that the valve clearance and injection
timing are correct and that the fuel injection nozzles
have no defect.
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