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Engine Maintenance
Servicing the Air Filter
Service Interval: Every 100 hours
Every 300 hours
Clean the foam pre-cleaner every 25 operating hours.
Clean the paper air filter every 100 operating hours.
Replace the paper air filter once every season or every
300 operating hours; replace it more frequently in dusty
conditions.
Important: Do not operate the engine without the
air filter assembly; extreme engine damage will
occur.
1. Stop the engine and wait for all moving parts to stop.
2. Disconnect the wire from the spark plug (Figure 10).
3. Remove the screw that secures the air cleaner cover
(Figure 21).
Figure 21
1. Air cleaner housing
2. Foam precleaner
3. Paper air filter
4. Remove the cover and clean it thoroughly (Figure 21).
5. Remove the paper air filter and discard it (Figure 21).
Important: Do not try to clean a paper filter.
6. Remove the foam pre-cleaner and wash it with a
mild detergent and water, then blot it dry.
7. Saturate the pre-cleaner with oil, then squeeze it (do
not twist) to remove the excess oil.
8. Install the foam pre-cleaner.
9. Install the new paper air filter.
4. Cover
5. Screw
10. Install the cover and secure it with the screw.
11. Connect the wire to the spark plug.
Changing the Engine Oil
Service Interval: After the first 5 hours
Every 50 hours
Change the oil after the first 5 operating hours and than
after every 50 operating hours or every season (more
frequently in dusty or dirty conditions).
1. Run the engine to warm the engine oil.
Note: Warm oil flows better and carries more
contaminants.
WARNING
Oil may be hot after engine has been run, and
contact with hot oil can cause severe personal
injury.
Avoid contacting the hot engine oil when you
drain it.
2. Stop the engine and wait for all moving parts to stop.
3. Disconnect the wire from the spark plug (Figure 10).
4. Drain the gasoline from the fuel tank; refer to
Emptying the Fuel Tank and Cleaning the Fuel Filter.
5. Slide the drain hose over the oil drain valve
(Figure 22).
1. Oil filter
2. Fuel line
6. Place an oil drain pan under the drain hose.
7. Open the drain valve and allow the oil to drain into
the pan.
Note: Slightly tip the machine onto its right side
to drain the oil.
19
Figure 22
3. Oil drain valve
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