RedMax BT250 User Manual

OWNER/OPERATOR MANUAL

LINE TRIMMER

BT25-00000 (404)

The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects or other reproductive harm.

WARNING

Before using our products, please
read this manual carefully to
understand the proper use of your
unit.

WARNING

DRIVE UNIT 40400101 and up ENGINE UNIT KU40001 and up

APPLICABLE SERIAL NUMBERS :

BT250

SAFETY FIRST

Instructions contained in warnings within this
manual marked with a symbol concern
critical points which must be taken into
consideration to prevent possible serious
bodily injury, and for this reason you are
requested to read all such instructions
carefully and follow them without fail.

■ WARNINGS IN THE MANUAL

This mark indicates instructions which must be
followed in order to prevent accidents which could
lead to serious bodily injury or death.

This mark indicates instructions which must be
followed, or it leads to mechanical failure,
breakdown, or damage.

This mark indicates hints or directions useful in the
use of the product.

NOTE

CONTENTS

1. Parts location …………………………………4

2. Specifications …………………………………4

3. Warning labels on the machine ……………5

4. Symbols on the machine ……………………6

5. For safe operation ……………………………7

6. Set up …………………………………………13

7. Fuel……………………………………………14

8. Operation ……………………………………16

9. Maintenance …………………………………19

10. Storage ………………………………………24

11. Troubleshooting guide ………………………24

12. Parts list ………………………………………25

WARNING

IMPORTANT

2. Specifications

■ BT250

Overall size(LxWxH)······················································ 63.0(1600)x13.0(330)x12.0(305) in(mm)
Dry weight w/o acc.····························································································· 11.1 lbs (5.05kg)
Engine Type······················································································ Air-cooled 2-stroke gasoline

Model······································································································ Zenoah GT25N2
Displacement ······················································································· 1.6cu-in (25.4cm3)
Max. output·························································································· 1.2Hp at 8500 rpm
Fuel ······················································································· Mixture(Gasoline 50 : Oil 1)
Carburetor ··················································································· Walbro Diaphragm type
Spark plug ································································································· NGK BPMR7A

Fuel tank capacity······························································································ 22.3 fl.oz (0.62

)

Transmission··········································································· Centrifugal clutch, Rigid driveshaft
Reduction ratio ····················································································································· 1.000
Cutting head rotating direction······························································ Clockwise(Operator view)
Durability period····················································································································50hrs.
Standard Accessories

3.5 in. 2-line Head ····································································································· 1 pc.
Specifications are subject to change without notice.

1. Parts location

1. Loop handle

2. Ignition switch

3. Throttle cable

4. Throttle lever

5. Drive shaft housing

6. Debris guard

7. Cutting line head

8. Gear case

9. Spark arrester

10. Starter knob

11. Fuel tank

12. Primer pump

13. Choke lever

14. Air cleaner cover

 4 

(1) Read owner's manual before operating this machine.
(2) Wear head, eye and ear protection.
(3) Warning/Attention
(4) Keep all children, bystanders and helpers 15 meters away from the brushcutter

If warning label peel off or become soiled and impossible to read, you should contact the dealer
from which you purchased the product to order new labels and affix them in the required
location(s).

Never modify your brushcutter.
We won't warrant the machine, if you use the remodeled brushcutter or you don't observe
the proper usage written in the manual.

WARNING

3. Warning labels on the machine

 5 

IMPORTANT

 6 

For safe operation and maintenance,
symbols are carved in relief on the machine.
According to these indications, please be
careful not to make a mistake.

(a) The port to refuel the "MIX GASOLINE"
Position: FUEL TANK CAP

(b) The direction A to close the choke

The direction B to open the choke

Position: AIR CLEANER COVER

4. Symbols on the machine

CE MOTEUR EST CONFORME A LA REGLEMENTATION U.S. EPA 2005 POUR LES PETITS
MOTEURS HORS-ROUTE. DUREE DE CONFORMITE DES EMISSIONS : CATEGORIE A.
SE REFERER AU MODE D’EMPLOI POUR DE PLUS AMPLES INFORMATIONS.

FAMMILLE DE MOAMMILLE DE MOTEUR :TEUR : 5HCPS.025AD;EM 5HCPS.025AD;EM
CYLINDREE :CYLINDREE : 25cm3 DATE DE FTE DE FABRICAABRICATION :TION :

INFORMAINFORMATION IMPORTION IMPORTANTE CONCERNANT LE MOANTE CONCERNANT LE MOTEURTEUR

 7 

5. For safe operation

1. Read this manual carefully until you
completely understand and follow all safety
and operating instructions.

2. Keep this manual handy so that you may refer
to it later whenever any questions arise. Also
note, if you have any questions which cannot
be answered herein, contact the dealer from
whom you purchased the product.

3. Always be sure to include this manual when
selling, lending, or otherwise transferring the
ownership of this product.

4. Never allow children or anyone unable to fully
understand the directions given in the manual
to use the machine.

■ WORKING CONDITION

1. When using the product, you should wear proper
clothing and protective equipment.

(1) Helmet
(2) Ear protectors
(3) Protection goggles or face protector
(4) Thick work gloves
(5) Non-slip-sole work boots

2. And you should carry with you.

(1) Attached tools and files
(2) Properly reserved fuel
(3) Spare blade
(4) Things to notify your working area (rope,

warning signs)
(5) Whistle (for collaboration or emergency)
(6) Hatchet or saw (for removal of obstacles)

3. Do not wear loose clothing, jewelry, short
trousers, sandals, or go barefoot. Do not wear
anything which might be caught by a moving
part of the unit. Secure hair so it is above
shoulder length.

■ WORKING CIRCUMSTANCE

1. Never start the engine inside a closed room or
building. Exhaust gases contain dangerous
carbon monoxide.

2. Never use the product,
a. when the ground is slippery or when you can’t

maintain a steady posture.

 8 

b. At night, at times of heavy fog, or at any other

times when your field of vision might be
limited and it would be difficult to gain a clear
view of the working area.

c. During rain storms, during lightning storms, at

times of strong or gale-force winds, or at any
other times when weather conditions might
make it unsafe to use the product.

■ WORKING PLAN

1. You should never use the product when under
the influence of alcohol, when suffering from
exhaustion or lack of sleep, when suffering from
drowsiness as a result of having taken cold
medicine or at any other time when a possibility
exists that your judgment might be impaired or
that you might not be able to operate the product
properly and in a safe manner.

2. When planning your work schedule, allow plenty
of time to rest. Limit the amount of time over
which the product is to be used continuously to
somewhere around 30~40 minutes per session,
and take 10~20 minutes of rest between work
sessions. Also try to keep the total amount of
work performed in a single day under 2 hours or
less.

1. If you don’t observe the working time, or
working manner (See ■ USING THE
PRODUCT), Repetitive Stress Injury(RSI)
could occur.
If you feel discomfort, redness and swelling
of your fingers or any other part of your
body, see a doctor before getting worse.

2. To avoid noise complaints, in general,
operate product between 8a.m. and 5p.m. on
weekdays and 9a.m. to 5p.m. weekends.

Check and follow the local regulations as to sound
level and hours of operations for the product.

NOTE

5. For safe operation

WARNING

■ BEFORE STARTING THE ENGINE

1. The area within a perimeter of 50 feet (15m) of
the person using the product should be
considered a hazardous area into which no one
should enter. If necessary yellow warning rope,
warning signs should be placed around the
perimeter of the area. When work is to be
performed simultaneously by two or more
persons, care should also be taken to constantly
look around or otherwise check for the presence
and locations of other people working so as to
maintain a distance between each person
sufficient to ensure safety.

2. Check the condition of working area to avoid any
accident by hitting hidden obstacles such as
stumps, stones, cans, or broken grass.

Remove any obstacle before beginning work.

3. Inspect the entire unit for loose fasteners and
fuel leakage. Make sure that the cutting
attachment is properly installed and securely
fastened.

4. Be sure the debris guard is firmly attached in
place.

5. If the cutting head is the metal blade, use the
shoulder strap. Adjust the strap for comfort
before starting the engine. The strap should be
adjusted so the left hand can comfortably hold
the handlebar grip approximately waist high.

■ STARTING THE ENGINE

1. Keep bystanders and animals at least 50feet
(15m) away from the operating point. If you are
approached, immediately stop the engine.

2. The product is equipped with a centrifugal clutch
mechanism, so the cutting attachment begins to
rotate as soon as the engine is started by putting
the throttle into the start position. When starting
the engine, place the product onto the ground in
a flat clear area and hold it firmly in place so as
to ensure that neither the cutting part nor the
throttle come into contact with any obstacle
when the engine starts.

IMPORTANT

5. For safe operation

 9 

 10 

Never place the throttle into the high speed
position when starting the engine.

3. After starting the engine, check to make sure
that the cutting attachment stops rotating when
the throttle is moved fully back to its original
position. If it continues to rotate even after the
throttle has been moved fully back, turn off the
engine and take the unit to your authorized Red
Max servicing dealer for repair.

■ USING THE PRODUCT

Cut only materials recommended by the
manufacturer. And use only for tasks explained
in the manual.

1. Grip the handles firmly with both hands using
your whole hand. Place your feet slightly apart
(slightly further apart than the width of your
shoulders) so that your weight is distributed
evenly across both legs, and always be sure to
maintain a steady, even posture while working.

2. Keep cutting attachment below waist level.

3. Maintain the speed of the engine at the level
required to perform cutting work, and never raise
the speed of the engine above the level
necessary.

4. If the unit start to shake or vibrate, turn off the
engine and check the whole unit. Do not use it
until the trouble has been properly corrected.

5. Keep all parts of your body away from rotating
cutting attachment and hot surfaces.

6. Never touch the muffler, spark plug, or other
metallic parts of the engine while the engine is in
operation or immediately after shutting down the
engine. Doing so could result in serious burns or
electrical shock.

IMPORTANT

5. For safe operation

WARNING