Shindaiwa 81532 Hour Maintenance continued, hour Maintenance, Inspect the Gearcase Protector

50-Hour Maintenance (continued)

CAUTION!

The D-shaped shim washer must be positioned with its flat edge toward the shaft tube.

Gearcase

Shaft

Tube

D-shaped
Shim Washer	Flat 26024
Figure 23	(toward tube)

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 72958-16210)

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
	Cover
Screws
		Muffler
		Cover
		Muffler
		Cover Screw
			Muffler
		Muffler	Screws
		Gasket		Screws
	Muffler	Spark Arrester	Spark Arrester	Outlet
	Gasket	Screen	Cover
Figure 25

	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
dealer.

13