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6
6.8 ADJUSTING MINIMUM AND MAXIMUM IDLE SPEED RPMS - ( only for Euro 2 engines )
1. Connect a revolution counter to the engine.
2. Run the engine and bring it to the operating
temperature.
3. Turn the idle adjusting screw (A) and set the engine to
the minimum speed required.
4. Tighten the lock nut (B) when finished.
Important
• To decrease the rpm number, loosen the screw. To
increase it, tighten the screw.
5. Turn the peak-rpm adjusting screw (D) and set the
engine to the maximum speed required.
6. Tighten the lock nut (C) when finished.
Important
• To decrease the rpm number, tighten the screw
whereas to increase it loosen the screw.
6.9 ADJUSTING INJECTION DELIVERY
The adjustment may be performed with the dynamometric brake
(accurate adjustment) or without it (approximate adjustment).
6.9.1 Adjusting injection delivery (without dyno break)
( only for Euro 2 engines )
1. Loosen locknut (A).
2. Firmly tighten the screw (B) of the flow limiter.
3. Start the engine and bring it to the operating
temperature.
4. Bring the engine to maximim rpm allowed.
5. Loosen the screw (B) of the flow limiter until the engine
speed starts to decrease.
6. Retighten the screw rotating it 2.5 revolutions, then
fasten with the lock nut (A).
Important
• If the engine gives off too many fumes at maximum
load, loosen the flow limiter screw. If it gives off no
fumes or does not achieve maximum power, tighten
the flow limiter screw.
62
OVERHAULS AND TUNING
Service Manual LDW FOCS 502 automotive _ cod. ED0053027270 - 3° ed_rev. 02
88
A
B
89
C
D
B
A
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