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4. Remove the cover (Figure 16 Box B).
Note: Be careful to prevent dirt and debris from
falling into the base.
5. Remove the foam and paper elements from the base
(Figure 16 Box C).
6. Remove the foam element from the paper element
(Figure 16 Box D).
7. Inspect the foam and paper elements, and replace them
if they are damaged or excessively dirty.
Note: Never try to brush dirt off the paper element;
brushing forces the dirt into the fibers.
8. Clean the foam element in warm, soapy water or in a
nonflammable solvent.
Note: Do not use gasoline to clean the foam element
because it could create a risk of fire or explosion.
9. Rinse and dry the foam element thoroughly.
10. Dip the foam element in clean engine oil, then squeeze
out the excess oil.
Note: Excess oil in the foam element restricts the air
flow through the element and may reach the paper
filter and clog it.
11. Wipe dirt from the base and the cover with a moist rag.
Note: Be careful to prevent dirt and debris from
entering the air duct leading to the carburetor.
12. Install the air cleaner elements and ensure that they are
properly positioned.
13. Securely install the cover with the nut.
Servicing the Engine Oil
Oil Type: 4-cycle engine oil that meets or exceeds the
requirements for API service category SJ, SL, SM, or higher
Models
68048 and 68049
68050 and 68051
Important: If the oil level in the crankcase is too low
or too high and you run the engine, you may damage
the engine.
Viscosity: Use SAE 10W-30 for general use. You can use
the other viscosities shown in the chart when the average
temperature in your area is within the indicated range (Figure
8).
Crankcase Capacity
0.58 L (0.61 US qt)
1.1 L (1.2 US qt)
5W - 30 / 10W - 30
0
20
40
-20 -10 0
Changing the Engine Oil
Service Interval: After the first 25 hours
Every 100 hours
WARNING
Oil may be hot after the engine has been run, and
contact with hot oil can cause severe personal injury.
Avoid contacting the hot engine oil when you drain
it.
1. Move the machine to a level surface.
2. Set the Dyna-Clutch lever to the Stop position, stop
the engine, and wait for all moving parts to stop.
3. Disconnect the wire from the spark plug.
4. Place a pan under the drain plug to catch the oil.
5. Remove the drain plug (Figure 18).
g019417
1. Drain plug
6. Replace the plug when the oil has drained completely.
Note: Dispose of the used oil at a certified recycling
center.
7. Remove the dipstick (Figure 9) and slowly pour oil into
the fill hole until the oil pours out of the fill hole.
8. Install and secure the dipstick.
9. Wipe up any spilled oil.
15
30
60
80 100 F
10
20 30 40 C
Figure 17
1
Figure 18
o
o
g013375
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