50-Hour Maintenance (continued)
CAUTION!
The
Gearcase
Shaft
Tube
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Shim Washer | Flat 26024 |
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Figure 23 | (toward tube) |
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Inspect the Gearcase Protector
The metal gearcase protector (p/n 72958- 16210) is installed to protect the gearcase flange from damage when working close to sidewalks or other abrasive surfaces, and should be routinely inspected for damage or excessive wear.
When replacing the protector, inspect to be sure that both of the protector mounting screws are firmly tightened and each screw is locked in place with a nut as shown.
Nut
| Gearcase Protector |
Figure 24 | (P/N |
135-hour Maintenance
Every 135 hours of operation,
remove and clean the muffler.
WARNING!
Never operate this trimmer with a damaged or missing muffler or spark arrester! Operating with missing or damaged exhaust components is a fire hazard, and can also damage your hearing!
1.Remove the spark plug boot.
2.With a 3 mm hex wrench remove the 1 muffler cover and 3 engine cover screws and the engine cover. See Figure 25.
3.With a Phillips type screwdriver remove the 5 screws holding the spark arrester screen and cover to the muffler. See Figure 25.
4.Remove the screen and clean it with a stiff bristle brush.
5.With a 4 mm hex wrench remove the 3 muffler bolts and the muffler.
See Figure 25.
6.Inspect the cylinder exhaust port for any carbon buildup.
7.Gently tap the muffler on a wood surface to dislodge any loose carbon.
Engine Cover | Engine |
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Cover |
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Screws |
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| Muffler |
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| Cover |
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| Muffler |
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| Cover Screw |
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| Muffler |
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| Muffler | Screws |
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| Gasket | Screws | |
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| Muffler | Spark Arrester | Spark Arrester | Outlet |
| Gasket | Screen | Cover |
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Figure 25 |
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| 8. Reassemble the spark arrester, muffler | |
IMPORTANT! | ||
If you note excessive carbon buildup, consult | and engine cover in the reverse order of | |
disassembly. | ||
with an authorized Shindaiwa servicing | ||
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dealer. |
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