DeWalt DG2900 Instruction Manual page 13

NOTE: Never run the generator without the air cleaner. Rapid engine wear will result.
1. Unsnap the air cleaner cover clips, remove the air cleaner cover, and remove the element
as shown in figure 22 and 23.
2. Wash the element in a solution of household detergent and warm water, then rinse
thoroughly, or wash in nonflammable or high flash point solvent. Allow the element to dry
thoroughly.
3. Soak the element in clean engine oil and squeeze out the excess oil as shown in figure 24.
The engine will smoke during initial start-up if too much oil is left in the element.
4. Reinstall the air filter element cover.
FUEL SEDIMENT CUP CLEANING
The sediment cup prevents dirt or water, which may be in the fuel tank from entering the
carburetor. If the engine has not been run for a long time, the sediment cup should be cleaned.
1. Turn the fuel valve to the off position (horizontal to the ground). Remove the sediment cup,
and O-ring as shown in figure 25.
2. Clean the sediment cup, and the O-ring, in nonflammable or high
flash point solvent.
3. Reinstall O-ring, and sediment cup.
4. Turn the fuel valve on and check for fuel leaks.
SPARK PLUG SERVICE
To service the spark plug, you will need a spark plug wrench like the
one included with generator. Use recommended spark plugs:
BPR6ES(NGK), W20EPR-U(DENSO). To ensure proper engine
operation, the spark plug must be properly gapped and free of
deposits.
CAUTION: If the engine has been running, the muffler will be very
hot. Be careful not to touch the muffler. Be sure to allow the engine to
cool before you touch the spark plug.
1. Remove the spark plug cap.
2. Clean any dirt from around the spark plug base.
3. Use a spark plug wrench to remove the spark plug.
4. Visually inspect the spark plug. Replace it if the insulator is cracked
or chipped. Clean the spark plug with a wire brush if you plan to reuse
it.
5. Measure the plug gap with the feeler gauge. Correct as necessary by
carefully bending the side electrode (figure 26). The gap should be: 0.70-
0.80 mm (0.028-0.031 in)
6. Check that the spark plug washer is in good condition. If it is not, thread
the spark plug in by hand to prevent cross threading.
7. After the spark plug is seated, tighten with a spark plug wrench to
compress the washer. If you are installing a new spark plug, tighten the
spark plug 1/2 turn after it seats to compress the washer. If you are
reinstalling a used spark plug, tighten 1/8–1/4 turn after the spark plug
seats to compress the washer.
NOTE: The spark plug must be securely tightened. An improperly tightened
spark plug can become very hot and could damage the engine. Never use
spark plugs which have an improper heat range. Use only the
recommended spark plugs or equivalent.
SPARK ARRESTER
CAUTION: If the generator has been running, the muffler will be very hot.
Allow cooling before proceeding.
NOTE: The spark arrester must be serviced every 100 hours to maintain its efficiency.
FIGURE 25: FUEL CUP
1. Using a Phillips-head screwdriver, remove the spark arrester screw as shown in figure 27.
CLEANING
2. Use brush to remove carbon deposits from the spark arrester screen as shown in figure
28. Inspect the spark arrester screen for holes or tears. Replace the spark arrester if
necessary.
Full Two Year Warranty
D WALT heavy duty generators are warranted for two years from the date of purchase. We
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will repair, without charge, any defects due to faulty materials or workmanship. For warranty
repair information, call 1-800-4-D
damage caused where repairs have been made or attempted by others. This warranty gives
you specific legal rights and you may have other rights which vary in certain states or provinces.
O-RING
Gasoline engines are covered by the product manufacturer's warranty.
FREE WARNING LABEL REPLACEMENT: If your warning labels become illegible or are
FUEL CUP
missing, call 1-800-4-D
FIGURE 26:
SPARK PLUG GAP
0.70-0.80 MM
(0.028-0.031 IN)
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FIGURE 27:
REMOVING SPARK ARRESTER
CLEANING SPARK ARRESTER
SET
SCREW
SPARK
ARRESTER
MUFFLER
WALT. This warranty does not apply to accessories or
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WALT for a free replacement.
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FIGURE 28