Ryobi 990r manual Operating Split Boom Coupler, Removing the Lower Attachment Boom

ASSEMBLY INSTRUCTIONS (Continued)

OPERATING THE

SPLIT BOOM® COUPLER

Model 990r is equipped with a Split Boom® coupler, which enables optional attachments to be installed on this unit.

The optional attachments are:
Sweeper/Blower	SB720r
Vacuum	LV720r
Edger	LE720r
Cultivator	GC720r
Straight Shaft Trimmer	SS720r
Curved Shaft Trimmer	CS720r
Tree Pruner	TP720r

Removing the Lower (Attachment) Boom

NOTE: To make removing the boom easier, place the unit on the ground or on a table.

1.Loosen the wing screws (Fig. 11).

2.Push the release button (Fig. 11).

3.Pull the lower boom straight out of the coupler (Fig. 12).

Thumb Screw

Release Button

Coupler

Thumb Screw

Fig. 11

Installing the Lower (Attachment) Boom

1.Loosen the wing screws. This will allow the lower boom to be inserted into the coupler (Fig. 12).

2.Remove the protective cover or hanger from the lower (attachment) boom. Push the lower (attachment) boom into the coupler (Fig. 13).

3.Before locking the release button into the coupler, rotate the boom 90 degrees; then rotate the lower boom back 90 degrees. This will ensure the drive shafts in both the upper and lower booms are engaged.

3.Locate and lock the release button into the hole in coupler (Fig. 11).

4.Check the sight hole to make sure both ends of the boom are together (Fig. 13). Tighten the wing screws before using the unit.

	Lower Boom
Thumb Screws (2)
Coupler
Upper	Release
Boom	Button

Fig. 12

Thumb	Sight Hole
Screws (2)

Coupler

Fig. 13

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