Maintenance (Continued)
135-Hour Maintenance
Every 135 hours of operation, remove and clean the muffler.
WARNING!
Never operate this blower with a damaged or missing muffler or spark arrester! Operating with missing or damaged exhaust com- ponents is a fire hazard, and can also damage your hearing!
Remove the Muffler.
1.Use the 4mm hex wrench to remove the five engine cover screws, and then slide the cover from the engine.
2.Use the 5mm hex wrench to remove the four muffler screws, and then remove the muffler assembly from the engine.
Muffler
Arrester | Arrester Screen | Tail Pipe |
Screen Cover |
|
|
Figure 24
Remove the Spark Arrester.
3. | Use the screwdriver to remove the two |
| exhaust tube mounting screws, and then |
| remove the tail cap, exhaust tube, gasket, |
| and arrester screen. See figure 24. |
4. | Use a plastic scraper or wire brush to |
| remove carbon deposits from the arres- |
| ter screen and wipe clean exhaust base. |
6.Gently tap the muffler on a wood sur- face to dislodge any loose carbon.
7.Inspect the cylinder exhaust port for carbon buildup.
IMPORTANT!
If you note excessive carbon buildup, con- sult your servicing dealer.
IMPORTANT!
Reset the muffler screw retaining tabs to prevent the muffler screws from loosening.
5. Inspect the screen carefully, and replace |
any screen that has been perforated, |
distorted, or is otherwise unserviceable. |
8.Reassemble the muffler in the reverse order of disassembly.
Long Term Storage
Whenever the unit will not be used for 30 days or longer, use the following procedures to prepare it for storage:
■Clean external parts thoroughly.
■Drain all the fuel from the fuel tank.
IMPORTANT!
All stored fuels should be stabilized with a fuel stabilizer such as
■Remove the remaining fuel from the fuel lines and carburetor:
1.Prime the primer bulb until no more fuel is passing through.
2.Start and run the engine until it stops running.
3.Repeat steps 1 and 2 until the engine will no longer start.
CAUTION!
Gasoline stored in the carburetor for extended periods can cause hard start- ing, and could also lead to increased service and maintenance costs.
■Remove the spark plug and pour about 10 cm3 of
■Before storing the unit, repair or replace any worn or damaged parts.
■Remove the air cleaner element from the unit and clean it as outlined in the sec- tion,
■Store the unit in a clean,
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