Shindaiwa 63888-94010 specifications Hour Maintnenace, Connect the Outer Tube to the Powerhead

135-hour Maintnenace

Every 135 hours of operation,

remove and clean the muffler.

WARNING!

Never operate the unit with a damaged or missing muffler or spark arrester! Operating with missing or damaged exhaust components is a fire hazard and could also damage your hearing.

1.	Remove the spark plug boot.
2.	Loosen the two 4 mm engine cover
	screws (located at the top of the
	recoil housing).
3.	Loosen the 5 mm engine top cover
	screw (the screw is captive) and lift
	the cover from the engine.

5.Remove the rear muffler shield bolt and, while noting the orientation of parts, separate the muffler shield.

6.Remove the spark arrester screen and clean with a stiff bristle brush.

7.Gently tap the muffler on a wood surface to dislodge any loose carbon.

8.Inspect the cylinder exhaust port for carbon buildup.

IMPORTANT!

If you note excessive carbon buildup, consult your servicing dealer.

9.Reassemble the muffler in the reverse order of disassembly.

Assembly
Driveshaft/Powerhead
Clamp Screw	Spark
Main	Plug
Shaft
Outer Tube
Grip
Ignition
Switch
Tube
Clamp
Throttle Lever
Figure 5

Connect the Outer Tube to the Powerhead.

ASSEMBLY

4. Remove the two 5 mm muffler

screws. Remove the lower muffler

screw, then lift the muffler assem-

bly from the engine.

1.Place the powerhead on a clean, flat surface, spark plug facing up.

See Figure 5.

Tube Clamp

4. Slide the outer tube into the tube

clamp until the tube bottoms. If

installation is difficult, rotate the

outer tube or gearcase shaft

slightly until you feel the mainshaft

Rear Muffler	Spark	Forward
Shield		Muffler
	Arrester	Shield
	Screen
MAINTENANCE		5 mm Muffler
		Screws
Rear Muffler		Lower Muffler
Shield Bolt	Catalyst Muffler	Screw
Figure 35
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splines engage with the powerhead.

See Figure 5.

5. Position the outer tube so that the

ignition switch is facing up and the

Hex

Wrench

Figure 6

Shim Washer

throttle lever is facing down. See

Figure 5.

6. Slide the outer tube into the

powerhead until the throttle grip

just contacts the tube clamp.

2.Use the 4 mm hex wrench to loosen the tube clamp screw. Verify that the D-shaped shim washer is positioned as shown. See Figure 6.

CAUTION!

Do not remove the D-shaped shim washer! The shim washer pre- vents damage from overtightening the tube clamp screw.

3.Add some moly-type EP grease to splines at the end of the main shaft.

7. Tighten the clamp screw firmly.

CAUTION!

Do not force the shaft tube into the powerhead! Excessive force can damage the shaft tube and mainshaft.

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