Craftsman 247.889980 - Manual (Page 17)

SERVICE AND MAINTENANCE
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7. After the oil has finished draining, press the two tabs inward and
push the oil drain valve back in to lock the valve closed. Remove
the hose, and re-cap the end of the oil drain valve to keep debris
from entering the drain port.
8. Refill the engine with new motor oil until the oil level on the
dipstick reads FULL. Replace the oil fill cap/dipstick.
9. Pivot the right handle brace tube back into position. Align the
middle hole in the brace tube with the hole in the handle. Secure
with the star knob and carriage screw removed earlier.
Only use high quality detergent oil rated with API service classification
SF or SG. Select the oil's SAE viscosity grade according to your
expected operating temperature. Figure 14. Although multi-viscosity
oils (5W30,10W30 etc.) improve starting in cold weather, these multi­
viscosity oils will result in increased oil consumption when used above
32°F. Check your engine oil level more frequently to avoid possible
engine damage from running low on oil.
Checking the Spark Plug
Clean spark plug and reset the electrode gap to 0.030” at least once a
season; replace every 100 hours of operation.
1
.
3.
Clean area around the spark plug base. Do not sandblast spark
plug. Spark plug should be cleaned by scraping or wire brushing
and washing with a commercial solvent
Remove and inspect the spark plug. Check gap to make sure it is
set at .030”. See Figure 15.
Replace the spark plug it electrodes are pitted, burned, or the
porcelain is cracked. Use a Champion® RC12YC spark plug.
Servicing the Air Cleaner
AWARNING
If filters, or covers are not installed correctly serious injury or death
could result from backfire. Do not attempt to start the engine with
them removed.
A CAUTION
Do not use pressurized air or solvents to clean the air cleaner
cartridge.
Clean or replace the air cleaner every 25 hours of operation.
1. Pull up on air cleaner handle. Figure 10, and pull back towards the
engine.
2. Remove the air cleaner cover. Figure 16.
4.
Carefully remove air cleaner cartridge and pre-cleaner (it
equipped) from the blower housing.
Clean the base of the air cleaner cartridge carefully to prevent
debris from entering the engine.
Place the pre-cleaner, it equipped, and cartridge back into the
blower housing. The cartridge must be placed securely into
position.
Align tabs on cover with slots in blower housing and replace the
cover.
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