Operating Instructions; Adjusting The Trimming Line Length; Decorative Trimming; Using The Brush Blade - Ryobi 990r Operator's Manual

ADJUSTING THE TRIMMING LINE
LENGTH
Your trimmer is equipped with a bump head that allows
the operator to release more trimming line without stop-
ping the engine. To release additional line, lightly tap the
trimming head on the ground (Fig. 23) while operating the
trimmer at high speed.
Fig. 23
NOTE: Always keep the trimming line fully
extended. Line release becomes more
difficult as cutting line becomes shorter.
Each time the head is bumped, about 25.4 mm (1 in) of
trimming line is released. A blade in the line guard will cut
the line to the proper length if excess line is released.
For best results, tap the head on bare ground or hard soil.
If line release is attempted in tall grass, the engine may
stall.

DECORATIVE TRIMMING

Decorative trimming is accomplished by removing all
vegetation around trees, posts, fences, etc. Use a
30-degree angle when trimming with this method (Fig. 24).
Fig. 24
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OPERATING INSTRUCTIONS

USING THE BRUSH BLADE

1. Always maintain the proper stance when using the
brush blade (Fig. 25).
Sharpening the Brush Blade
WARNING
Do not sharpen the brush blade. Sharpening
the blade can cause the blade tip to break off
while in use. This can result in severe
personal injury to yourself or others.
The brush blade is designed with a second set of teeth,
which can be used by removing the blade, turning it
upside down, and reinstalling it.
If a crack is noticed, install a new blade from your
authorized service dealer.
Fig. 25
NOTE: Do not use the brush blade for edging.
Use the LE720r edger attachment.
WARNING
Keep the J-handle between the operator and
cutting head at all times.