background image

OPERATING INSTRUCTIONS

7

Each time the head is bumped, about 1 inch (25.4 mm.)
of trimming line is released. A blade in the cutting
attachment shield will cut the line to the proper length if
excess line is released.

For best results, tap the Bump Head™ on bare ground
or hard soil. If line release is attempted in tall grass, the
engine may stall. Always keep the trimming line fully
extended. Line release becomes more difficult as the
cutting line becomes shorter.

NOTE:

Do not rest the Bump Head™ on the ground
while the unit is running .

CAUTION:

Do not remove or alter the line

cutting blade assembly. Excessive line length
will make the clutch overheat. This may lead
to serious personal injury or damage to the
unit.

Some line breakage will occur from:

Entanglement with foreign matter

Normal line fatigue

Attempting to cut thick, stalky weeds

Forcing the line into objects such as walls or fence
posts

TIPS FOR BEST TRIMMING RESULTS

Keep the cutting attachment parallel to the ground.

Do not force the cutting attachment. Allow the tip of
the line to do the cutting, especially along walls.
Cutting with more than the tip will reduce cutting 
efficiency and may overload the engine.

Cut grass over 8 inches (200 mm) by working from
top to bottom in small increments to avoid prema-
ture line wear or engine drag.

Cut from left to right whenever possible. Cutting to
the right improves the unit's cutting efficiency.
Clippings are thrown away from the operator.

Slowly move the trimmer into and out of the cutting
area at the desired height. Move either in a forward-
backward or side-to-side motion. Cutting shorter
lengths produces the best results.

Trim only when grass and weeds are dry.

The life of your cutting line is dependent upon;

Following the previous trimming techniques

What vegetation is being cut

Where it’s being cut

For example, the line will wear faster when trimming
against a foundation wall as opposed to trimming
around a tree.

HOLDING THE TRIMMER

WARNING:

Always wear eye, hearing, foot

and body protection to reduce the risk of
injury when operating this unit.

Before operating the unit, stand in the operating position
(Figs. 4 & 5). Check for the following:

The operator is wearing eye protection and proper
clothing.

The right arm is slightly bent, and the hand is holding
the shaft grip.

The left arm is straight, and the hand is holding the
J-handle or D-handle.

The unit is at waist level.

The cutting attachment is parallel to the ground and
easily contacts the vegetation to be cut without the
operator having to bend over.

Fig. 4

Fig. 5

ADJUSTING TRIMMING LINE LENGTH

The Bump Head™ cutting attachment allows you to
release trimming line without stopping the engine. To
release more line, lightly tap the cutting attachment on
the ground (Fig. 6) while operating the trimmer at high
speed.

NOTE

: Always keep the trimming line fully extended.

Line release becomes more difficult as cutting
line becomes shorter.

Fig. 6

Summary of Contents for SS725r

Page 1: ...SS725r Straight Shaft Trimmer Add On OPERATOR S MANUAL FOR QUESTIONS CALL 1 800 345 8746 in U S or 1 800 265 6778 in CANADA www ryobi com IMPORTANT MANUAL DO NOT THROW AWAY...

Page 2: ...u DO NOT RETURN THE UNIT TO THE RETAILER NOTE PROOF OF PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE Make sure this manual is carefully read and understood before starting or operating this equipment...

Page 3: ...An undersized cord set will cause a drop in line voltage resulting in loss of power and overheating See the operator s manual for the unit that will power this add on for the recommended cord size Ins...

Page 4: ...aged parts Stop the unit IMMEDIATELY if you feel excessive vibration Vibration is a sign of trouble Inspect thoroughly for loose nuts bolts or damage before continuing Repair or replace affected parts...

Page 5: ...m from the operating area THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY WARNING Do not operate without the cutting attachment shield in place Keep away from the rotating cutting attachmen...

Page 6: ...ig 2 3 While firmly holding the upper shaft housing pull the cutting attachment or add on straight out of the Click Link coupler Installing the Add Ons WARNING To avoid serious personal injury shut un...

Page 7: ...he right improves the unit s cutting efficiency Clippings are thrown away from the operator Slowly move the trimmer into and out of the cutting area at the desired height Move either in a forward back...

Page 8: ...rous projectile There are two methods to replace the SpeedSpool trimming line Wind the inner reel with new line Install a prewound inner reel Winding the Inner Reel With New Line NOTE It Is unnecessar...

Page 9: ...asp the ends and pull firmly to release the line from the holding slots in the inner reel Fig 13 Releasing the Inner Reel If the SpeedSpool does not release line correctly pull the ends of the line fi...

Page 10: ...own on the plunger Fig 18 Remove any dirt or debris from the shaft Fig 16 Fig 18 Fig 17 CLEANING THE SPEEDSPOOL Cleaning the SpeedSpool may be necessary To remove jammed or excess line If the SpeedSpo...

Page 11: ...uter spool Line welded Disassemble remove the welded section and rewind the line Line twisted when refilled Disassemble and rewind the line Not enough line is exposed Push the Bump Knob and pull out l...

Page 12: ...81457 Outer Spool and Eyelet Assembly includes 11 11 181458 Retainer 12 181561 Thrust Washer 13 181459 Small Spring 14 181461 Slider 15 181532 E Clip 16 181531 Spring 17 181462 Plunger 18 181463 C Cli...

Page 13: ...NOTES 13...

Page 14: ...able judgement of RYOBI to be defective in material or workmanship will be repaired or replaced by an authorized RYOBI service dealer without charge for parts and labor The RYOBI Product including any...

Reviews: