Ryobi LE720r manual Maintenance And Repair Instructions, Edger Blade Replacement

MAINTENANCE AND REPAIR INSTRUCTIONS

EDGER BLADE REPLACEMENT

WARNING: To avoid serious personal injury, always wear gloves while handling, removing or installing the blade.

WARNING: The gear housing gets hot after long periods of use. To avoid serious personal injury, do not touch the housing until it has cooled.

1.Line up the hole in output shaft with the locking rod slot. Insert the locking rod through the slot into the output shaft hole (Fig. 7).

2.While holding the locking rod, loosen the nut on the blade by turning it clockwise with a 5/8 inch wrench (Fig. 8). Remove the nut, retaining washer and blade. Keep the nut and blade retainer for installation.

3.Install the new blade, blade retainer, and nut

(Fig. 9). Insert the locking rod through the slot into the output shaft hole. Make sure that the blade stays flat and centered against the output shaft while tightening the lock nut counterclockwise (Fig. 10).

4.If you have a torque wrench, tighten the nut to

325-335 in.•lbs (37-38 N•m), while holding the locking rod in the slot.

If you do not have a torque wrench, hold the locking rod in the slot. Rotate the nut counterclockwise with a 5/8 inch closed-ended or socket wrench, until the nut presses against the washer and the blade is snug. Make sure the blade assembly is installed correctly, then rotate the nut an additional 1/4-1/2 turn (Fig. 10).

5.Remove the locking rod.

WARNING: Verify the blade is flat against the output shaft after the nut is tightened. If the blade is off-center, the unit will be damaged by vibration, and the blade may fly off, which can cause serious personal injury.

Output Shaft

Hole

Locking Rod

Locking Rod
	Output Shaft
Slot

Loosen

	Fig. 8
Edger Blade	Lock Nut
	Blade Retainer

Locking Rod

Fig. 9

Tighten

Fig. 10

Fig. 7

8