DeWalt D55672 Guide D'utilisation page 18

WARNING: Hot surfaces. Risk of burn. Aftercooler, pump head,
and surrounding parts are very hot, do not touch (see the Hot
Surfaces identified in Fig. 2). Allow compressor to cool prior to
servicing.
1. Ensure engine ON/OFF switch (C) is in the OFF Position.
2. Allow the unit to cool.
3. Disconnect spark plug wire.
4. Drain air tank.
5. Locate a suitable container under pump drain plug (L).
6. Remove the dipstick (K) from crank case.
7. Remove the oil drain plug (L).
8. Allow ample time for all oil to drain out. (Tilting the compressor
towards the drain plug will assist in draining.)
9. Install the oil drain plug.
10. Fill pump with D WALT synthetic compressor oil. Oil should not
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exceed top raised line on side of crackcase. (Oil will be even with
bottom of threads in crankcase fill port.)
11. Install dipstick.
12. Reconnect spark plug wire.
Checking Belt Tension (Fig. 1)
WARNING: Hot surfaces. Risk of burn. Aftercooler, pump head,
and surrounding parts are very hot, do not touch (see the Hot
Surfaces identified in Fig. 2). Allow compressor to cool prior to
servicing.
1. Ensure engine ON/OFF switch (C) is in the OFF position.
2. Allow the unit to cool.
3. Disconnect spark plug wire.
4. Drain air tank.
5. Remove two belt guard mounting screws on pump head.
6. Loosen but do not remove the four belt guard mounting screws
on the saddle.
7. Remove outer belt cover.
8. Measure belt tension. Proper tension is achieved when a
three (3) pound weight or equivalent finger pressure applied
midway between the motor pulley and compressor flywheel
causes a 1/4" (6.35 mm) deflection of the belt. If adjustment is
needed see Adjusting Belt Tension under Maintenance.
9. Replace belt guard.
10. Reconnect spark plug wire.
Adjusting Belt Tension
WARNING: Hot surfaces. Risk of burn. Aftercooler, pump head and
surrounding parts are very hot, do not touch (see the Hot Surfaces
identified in Fig. 2). Allow compressor to cool prior to servicing.
1. Follow procedures 1-8 in Checking Belt Tension under
Maintenance.
2. Scribe a mark at the base of the engine on the deck to be used
as a reference.
3. Loosen but do not remove four engine mounting nuts.
4. Loosen but do not remove bolt securing stiffener bracket to
engine.
5. Remove the belt.
6. Scribe a mark approximately 1/8" (3.2 mm) from the original
mark.
7. Slide the engine to the new mark and retighten the engine
mounting nuts.
WARNING: Risk of moving parts. Use caution when rolling
belt onto flywheel, fingers can get caught between the belt and
flywheel.
8. With the engine secure, roll the belt over the flywheel and the
pulley.
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