Ryobi RLT3725CH User manual

ELECTRIC LINE TRIMMER
OPERA
TOR'S MANUAL
RLT3725CH / RLT3725
RLT3725CH
RLT3725

Fig. 1
Fig. 2 Fig. 3
6
7
5
10
13
14
15
RLT3725CH
RLT3725
20
19
1
1
2
2
3
4
8
9
12
16
17
18
11
3
4
8
10
9
12
13
11
15
5
6
8
9
10
1
2

Fig. 5
Fig. 4
Fig. 8
Fig. 6 Fig. 7
Fig. 9
6
1
2
1
2
180˚
1
2

Fig. 10 Fig. 11

ENGLISH
1
GENERAL SAFETY RULES
WARNING:
When using electric gardening appliances, basic
safety precautions should always be followed to
reduce the risk of fire, electric shock and personal
injury, including the following:
READ ALL INSTRUCTIONS
GENERAL SAFETY RULES
Clear the work area before each use. Remove all
objects, such as rocks, broken glass, nails, wire or
string that can be thrown or become entangled in the
cutting line.
Wear heavy, long pants, boots and gloves. Do not
wear loose fitting clothing, short pants or go bare foot.
Do not wear jewelry of any kind.
Secure hair above shoulder level to prevent
entanglement in moving parts.
Do not allow children or untrained individuals to use
this product.
Keep all by standers, especially children and pets, at
least 15m from the operating area.
Do not operate this product when you are tired, ill or
under the influence of alcohol, drugs or medication.
Do not operate in poor lighting. Use the unit only in
daylight or good artificial light.
Keep firm footing and balance. Do not over reach.
Overreaching can result in loss of balance or exposure
to hot surfaces.
Keep all parts of your body away from moving parts.
Inspect the product before use. Replace any damaged
parts before use.
Do not operate the product in damp or wet locations.
Do not use the product in the rain.
Wear safety glasses or goggles when operating this
product.
Use the right product. Use the product for the
intended purpose only.
Do not handle the product with wet hands.
Do not use the product if the switch does not turn the
product on or off. A product that cannot be controlled
with the switch is dangerous and must be repaired.
Avoid accidental starting; never carry the product with
your finger on the trigger .
Stay alert and pay attention to what you are doing.
Use common sense when using this product.
Do not force the product. It will do a better job with
less likelihood of a risk of injury when you operate it at
the rate for which it was designed.
Use the product for cutting grass and light weeds only.
Do not use for any other purpose.
Before starting the product, position it so that the line
does not come in contact with anything you do not
intend to cut.
Pull the plug out immediately if the mains or extension
lead is damaged or severed.
Keep hands away from the cutting line. Do not
attempt to remove cut material or to hold material to
be cut when the line is moving. Be sure to unplug
the product before clearing jammed material from the
line. Do not grasp the line when picking up or holding
the product.
Be cautious after turning off the product. The line
coasts after turning off the product.
Disconnect the product from the power supply when
it is not in use, before servicing and when changing
accessories.
SPECIFIC SAFETY RULES
SPECIFIC TRIMMER SAFETY RULES
Replace the trimmer head if cracked, chipped or
damaged in any way. Be sure the trimmer head is
properly installed and securely fastened.
Make sure all guards, deflectors and handles are
properly and securely attached.
Use only the manufacturer’s replacement line in the
trimmer head.
Never operate the product without the safety guard in
place and in good condition.
Be familiar with the controls and proper use of the
product.
Do not switch the trimmer on in enclosed or poorly
ventilated spaces or in the presence of inflammable
and/or explosive substances such as liquids, gas and
powders.
Do not cross roads or gravel paths with the trimmer
still running.
Never fit metal cutting elements to the trimmer.
Maintain a firm grip on both handles while
trimming. Keep the trimmer head below waist level.
Never cut with the trimmer head over 76 cm or more
above the ground.
Keep the working area free from wires, stones and
debris.
Do not cut against hard objects. This could cause
injury or damage the trimmer.
Do not use the trimmer to cut grass which is not in
contact with the ground; for example, do not cut grass
which is on walls or rocks etc.
Always use your trimmer in an upright position.
The appliance is not intended for use by young children
or infirm persons without supervision.
Young children should be supervised to ensure that
they do not play with the appliance.

ENGLISH
2
SPECIFIC SAFETY RULES
changing accessories. Keep the p roduct dry, clean
and free from oil and grease.
Unplug the product before making adjustments or
repairs.
SERVICE RULES
Service on this product must be performed by
qualified repair personnel only. Service or maintenance
performed by unqualified personnel could result in
injury to the user and/or damage to the product. Such
service may also void your warranty.
Use only identical replacement parts when
servicing the product. Follow the instructions in
the Maintenance section of this manual. Use of
non-genuine parts or failu re to follow maintenance
instructions may create a risk of shock, serious injury
to the user and/or damage to the product. Such use may
also void your warranty.
STORAGE AND TRANSPORTATION RULES
Stop the motor when you are waiting to cut or when
you are walking from one cutting location to another.
Store the product inside in a dry place.
Store the product up high or lock it up to prevent
unauthorised use or damage. Keep the product out of
the reach of children.
Secure the product when transporting it.
Save these instructions. Refer to them frequently
and use them to instruct others who may use this
product. If you loan someone this product, loan these
instructions also.
For outdoors work use only suitably approved
extension cables with a min. conductor cross section
of 1.5mm2 The plug connectors must have earthing
contacts and be rain-water-proof.
Inspect extension cords for deterioration, cuts or
cracks in the insulation. Repair or replace the cords if
any defects appear.
A nameplate on the product indicates the unit’s
voltage. Never connect the product to an AC voltage
that differs from this voltage.
MAINTENANCE RULES
Maintain the product with care. Follow instructions for
If the power cord or extension cable becomes
damaged during use, disconnect the cord from the
supply immediately. DO NOT TOUCH THE CORD
BEFORE DISCONNECTING THE SUPPLY.
Electrical power should be supplied via a Residual
Current Device (RCD) with a tripping current of not
more than 30mA.
Do not use the product if parts have been damaged.
Check the product regularly to make sure that it will
operate properly and perform the intended function.
Check for alignment of moving parts, binding of
moving parts, breakage of parts and any other
condition that may affect the unit operation. Inspect
the unit’s power connection. Any part that is damaged
should be properly repaired or replaced by a Ryobi
authorised service centre.
Keep the product clean of grass clippings and other
materials that may become lodged in the cutting lines
and air vents.
Never douse or squirt the product with water or any
other liquid. Do not use detergents or solvents. Keep
handles dry, clean and free from debris.
After each use, clean with a soft, dry cloth.
Before carrying out any maintenance operations,
cut off the electric power supply by
disconnecting the plug from the mains.
WARNING:
If the cut-off blade is worn or breaks, have this
replaced by a Ryobi authorised service centre.
Make sure the cord is located so that it will not be
stepped on, tripped over or otherwise subjected to
damage or stress.
Do not abuse the power cord. Never carry the product
by the cord. Never pull the plug out of the power point
by the cord. Keep the cord away from heat, oil and
sharp edges.
ELECTRICAL SAFETY RULES

Some of the following symbols may be used on your tool. Please study them and learn their meaning. Proper
interpretation of these symbols will allow you to operate the tool more safely and effectively.
SYMBOL NAME EXPLANATION
Safety Alert Precautions that involve your safety.
Ricochet Thrown objects can cause severe injury. Wear
protective clothing and boots.
Eye Protection Always wear safety goggles and safety glasses with
side shields or a full face shield when operating
this product.
Keep Bystanders Away Keep all bystanders at least 15 m away.
No Blade Do not install any type of blade on this product.
Class II Construction Double-insulated construction.
Wet Conditions Alert Do not expose to rain or use in damp locations.
Read Operator's Manual
Operating speed of this product.RPM (Revolutions Per Minute)
11,000
To reduce the risk of injury, user must read and
understand operator's manual before using this
product.
SYMBOLS
3

4
SYMBOLS
The following signal words and meanings are intended to explain the levels of risk associated with this product.
SYMBOL SIGNAL MEANING
DANGER: Indicates an imminently hazardous situation, which, if not avoided, will result in
death or serious injury.
WARNING: Indicates a potentially hazardous situation, which, if not avoided, could result in
serious injury.
CAUTION: Indicates a potentially hazardous situation, which, if not avoided, may result in
minor or moderate injury.
CAUTION: (Without Safety Alert Symbol) Indicates a situation that may result in property
damage.
SAVE THESE INSTRUCTIONS
Servicing requires extreme care and knowledge and should
be performed only by a qualified service technician. For
service we suggest you return the product to your nearest
AUTHORISED SERVICE CENTREfor repair. When
servicing, use only identical replacement parts.
SERVICE
WARNING:
Observe all normal safety precautions related to
avoiding electrical shock.
WARNING:
To avoid serious personal injury, do not attempt to
use this product until you read thoroughly and
understand completely the operator's manual. Save
this operator's manual and review frequently for
continuing safe operation and instructing others
who may use this product.
WARNING:
The operation of any power tool can result in
foreign objects being thrown into your eyes,
which can result in severe eye damage. Before
beginning power tool operation, always wear
safety goggles or safety glasses with side shields
and a full face shield when needed. We
recommend Wide Vision Safety Mask for use
over eyeglasses or standard safety glasses with
side shields. Always use eye protection
SPECIFICATIONS
V
RLT3725CH
oltage...................................................
Nameplate Power ................................................... 370 W
No Load Speed ................................................11,000 min-1
Cutting Line ........................................................... 1.4 mm
Max.Cutting Path .................................................. 250 mm
Sound Power Level ............................................. 94 dB(A)
V
RLT3725
oltage...................................................
Nameplate Power ................................................... 370 W
No Load Speed ................................................11,000 min-1
Cutting Line ........................................................... 1.4 mm
Max.Cutting Path .................................................. 250 mm
Sound Power Level ............................................. 94 dB(A)
230V-240V~50 Hz
230V-240V~50 Hz

ENGLISH
DESCRIPTION
ASSEMBLY
5
OPERATION
CAUTION:
WARNING:
INSTALLING THE CRUTCH HANDLE (on RLT3725CH
model only) (Fig. 3)
Put the crutch handle (7) onto the end of the main
handle (1). Place the bolt through the hole and secure
using the nut on the other side.
INSTALLING SAFETY GUARD
STARTING
Insert the safety guard (15) onto the motor housing (13)
and secure it at the rear with the four screws supplied.
Carefully peel off the tape over the cut-off blade.
Before you start work, check the trimmer body and
cutting head for damage. Do not use damaged units.
Make sure that the area to be cut is free of stones,
debris, wires and any other objects.
Make sure the height of line trimmer is in most
comfortable position before use. Adjust the height by
pushing forward the height adjustment button (8), then
pulling/pushing the tubes until they click onto the most
suitable slot. (Fig. 4)
When starting the line trimmer for the first time, check
that the nylon lines (18) touch or pass over the cut-off
blade. If they are not long enough, press the bump
button (17) and, at the same time, pull the line.
Secure the cord using the cord retainer. Loop the cord
through the cord retainer slot then around the tongue.
The cord retainer helps prevent accidental unplugging of
the cord. (Fig. 5)
Connect the plug of the line trimmer to the electric
supply. The live tool indicator (6) will show a blue light
once the unit is connected to electric power. (Fig. 6)
Before doing any grass cutting, prepare the cutting line.
Hold the line trimmer securely a short distance above
ground and turn the line trimmer on by pressing in the
lock-off button (2) then squeezing the trigger (3). Let the
line trimmer run idly for a few seconds so it can
self-adjust the length of the line.
The line trimmer is supplied with some components not
assembled. To assemble these, proceed as follows:
NOTE: There is a paper tag on the shaft to help explain
this assembly. Remove this tag once the assembly is
complete.
NOTE: This shaft is designed for one time assembly. It is
not possible to disconnect the tubes once they have been
assembled/ fixed.
SHAFT ASSEMBLY (Fig. 2)
By clutching the upper part of the line trimmer under
your right arm and with your left hand holding the
lower shaft (9), carefully position the upper shaft (10)
over the lower shaft.
With your right thumb, push forward the height
adjustment button (8) then gradually lower the upper
shaft over the lower shaft. Turn/rotate the upper shaft
as necessary to ensure it goes onto the lower shaft in
the correct orientation.
As you insert the upper part over the lower part, take
care not to damage the cable and that the cable
resides comfortably without strain inside the shafts.
Never use the line trimmer without the safety
guard. It is vital for your and other people’s safety
and for the good working order of the trimmer.
The failure to observe these regulations could
cause dangerous personal harm.
WARNING:
This product may throw objects during operation,
causing injury to the operator or to bystanders.
Always wear suitable eye protection, boots,
gloves, and long, heavy pants while operating the
product.
The cut-off blade (20) on safety guard is sharp!
Contact with it can cause personal injury.
1. Main handle
2. Lock-off button
3. Trigger
4. Palm handle
5. Electric power cord
6. Live Tool Indicator
7. Crutch handle (RLT3725CH only)
8. Height adjustment button
9. Lower shaft
10. Upper shaft
11. Edger Guide
12. Rotating release
13. Motor housing
14. Foot pedal (RLT3725CH only)
15. Safety guard
16. Spool
17. Bump button
18. Nylon line
19. Bump head
20. Cut-off blade

ENGLISH
6
REPLACING THE CUTTING LINE
Unplug the trimmer
Press in both locks, then remove the spool cover (Fig. 9)
Remove the empty spool and replace a new spool (Fig. 10)
Insert the lines into the eyelets on the bump head
Replace the spool cover securely. (Fig. 11)
Press the bump button (17) and advance the line manually
until it can be trimmed to length by the cut-off blade.
OPERATION (CONTINUED)
MAINTENANCE
WARNING:
Use of line other than the original 1.4 mm.
monofilament cutting line could cause serious
personal injury or damage to the trimmer.
WARNING:
Make sure the trimmer head stops rotating when
you release the trigger. Contact with a rotating
trimmer head could cause personal injury.
OPERATING THE TRIMMER
Do not start the trimmer when it is upside down or when
not in working position.
Switch the trimmer on before the line makes contact
with the grass and ensure the line is not touching
stones or debris.
Turn the line trimmer on by pressing in the lock-off
button (2) then squeezing the trigger (3). Once the
trimmer is running, there is no need to keep the lock-off
button compressed.
Start off slowly, when you have gained experience, you
will be able to use the line trimmer to its full potential.
CUTTING TIPS
Lawn Edging (Fig. 7)
When the trimmer is used for lawn edging, pull
the rotating release (12) and rotate the trimmer
head 180 º.
Adjustable angles (on RLT3725CH only) (Fig. 8)
On RLT3725CH model, press on the foot pedal (14) and
the motor housing (13) can be turned to achieve
different angles for cutting less accessible or more
awkward places. Five different angles can be selected.
Cut the grass by moving the line trimmer from right to
left, left to right with the line parallel to the ground and
proceeding forward slowly. Keep the trimmer inclined
by about 30°.
On RLT3725CH model, you can put your arm on the
crutch to achieve a more comfortable position.
High grass should be cut in layers, always begin from
the top. The height of these cuts should be short.
Do not cut damp or wet grass. Dry grass will give
excellent results.
Always let the line rotate at top speed. Do not work in
such a way as to overload the trimmer.
Avoid wearing the line out quickly by knocking against
hard objects (stones, walls, fences etc.).
Never pass the line trimmer over the electric cable while
the line trimmer is running; make sure the cable is
always in safe position behind your back.
To switch off the line trimmer, simply release the
trigger.
WARNING:
These steps should be repeated every time
before starting work to make sure that everything
is functioning properly and to familiarise yourself
with the line trimmer.
WARNING:
Keep a firm grip with both hands during
operation.
CAUTION:
After switching off, the nylon line will continue to
rotate for a few more seconds.
SAFETY GUARD LINE TRIMMING CUT-OFF BLADE
This trimmer is equipped with a line trimming cut-off blade
on the safety guard. For best cutting, advance fresh lines
by gently tapping the bump head (19) on the ground. Fresh
lines will be released from the bump head and trimmed to
optimum length by the cut-off blade. Advance line
whenever you hear the engine running faster than normal
and when it is apparent the line is worn or broken. This will
maintain best cutting performance.

ENGLISH
7
TROUBLESHOOTING
DISPOSAL
1. Lubricate with a silicone spray.
2. Install more line (Refer to "Replacing the
Cutting Line" earlier in this manual).
3. Pull lines while alternately pressing down on
and releasing bump button..
4. Remove line from spool and rewind (Refer to
"Replacing the Cutting Line" earlier in this
manual).
Clean threads and lubricate with grease. If no
improvement, replace bump head.
Cut tall grass from the top down.
Line will not advance when
bump knob is tapped.
Bump head is hard to turn
Grass wraps around the
attachment shaft and the
trimmer head assembly
1. Line is welded to itself.
2. Not enough line on spool.
3. Line is worn too short.
4. Line is tangled on spool.
Screw threads are dirty or dam-
aged.
Cutting tall grass at ground level.
PROBLEM POSSIBLE CAUSE SOLUTION
Waste electrical products should not be
disposed of together with household
waste. Please recycle where facilities
exist. Check with your local authority or
retailer for recycling advice.

RYOBI TECHNOLOGIES AUSTRALIA PTY. LTD.
GUARANTEE
RYOBI TECHNOLOGIES AUSTRALIA PTY. LTD.
A.B.N. 98 002 277 509
RYOBI NEW ZEALAND PTY. LTD.
AUCKLAND: 27 Clemow Drive, Mt Wellington, N.Z.
Contact during normal business hours.
Subject to the guarantee condition below, this Ryobi tool
(hereinafter called “the product”) is guaranteed by Ryobi
(hereinafter called “the Company”) to be free from
defects in material or workmanship for a period of 24
months from the date of original purchase covering
both parts and labour. Under the terms of this
guarantee, the repair or replacement of any part shall
be the opinion of the Company or its authorised agent.
Should service become necessary during the warranty
period, the owner should contact the RYOBI HELPLINE
1300 361 505 or contact the retailer from whom the
product was purchased.
In order to obtain guarantee service, the owner must
present the sales docket and Guarantee Certificate
to confirm date of purchase. This product is sold by the
dealer or agent as principal and the dealer has no
authority from the Company to give any additional
guarantee on the Company’s behalf except as herein
contained or herein referred to.
Guarantee Conditions
This guarantee only applies provided that the Product
has been used in accordance with the manufacturer’s
recommendations under normal use and reasonable
care (in the opinion of the Company) and such
guarantee does not cover damage, malfunction or
failure resulting from misuse, neglect, abuse, or used
for a purpose for which it was not designed or is not
suited and no repairs, alterations or modifications
have been attempted by other than an Authorised
Service Agent. This guarantee will not apply if the tool is
damaged by accident or if repairs arise from normal
wear and tear.
The Company accepts no additional liability pursuant to
thi s guara ntee f or the co sts of tr avel ling or
transportation of the Product or parts to and from the
service dealer or agent - such costs are not included in
this guarantee.
Certain legislation, including the Trade Practices Act,
1974 (as amended) and other state and territorial laws
give rights to the buyer and impose liability on the seller in
certain circumstances. Nothing hereinshall havethe effect
of excluding, restricting or modifying any condition,
guarantee, right or liability imposed, to the extent only
that such exclusion, restriction or modification
would render any term herein void.
BRISBANE : All enquiries Tel : [phone]
TOWNSVILLE: All enquiries Tel : [phone]
MELBOURNE: 960 Stud Road, Rowville,Vic. 3178
Tel : [phone]
HOBART: All enquiries Tel : [phone]
ADELAIDE: All enquiries Tel : [phone]
PERTH: 33-35 Sorbonne Cres. Canning Vale, W.A. 6155
Address Of Dealer
Present This Form With Your Purchase Docket When Guarantee Service Is Required.
Tel: - Fax: [phone] - www.ryobi.com.au
Tel: [phone] - Free Call: 0800 279 624 - Fax: [phone] - www.ryobi.co.nz
For your record and to assist in establishing date of purchase (necessary for in-guarantee service)
please keep your purchase docket and this form completed with the following particulars.
This Guarantee Form Should Be Retained By The Customer At All Times
Date Model No Serial No
Tel : [phone]
SYDNEY: Building B, Rosehill Industrial Estate
3-5 Shirley Street, Rosehill N.S.W. 2142
1300 361 505