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6

MAINTENANCE AND REPAIR INSTRUCTIONS

MAINTENANCE SCHEDULE

Perform these required maintenance procedures at the frequency stated in the table. These procedures
should also be a part of any seasonal tune-up.

NOTE:

Some maintenance procedures may require special tools or skills. If you are unsure about these
procedures take your unit to any non-road engine repair establishment, individual or authorized
service dealer. 

NOTE:

Maintenance, replacement, or repair of the emission control devices and system may be
performed by any non-road engine repair establishment, individual or authorized service dealer.

In order to assure peak performance of your engine, inspection of the engine exhaust port may be
necessary after 50 hours of operation. If you notice lost RPM, poor performance or general lack of
acceleration, this service may be required. If you feel your engine is in need of this inspection, refer service
to any non-road engine repair establishment, individual or authorized service dealer for repair. DO NOT
attempt to perform this process yourself as engine damage may result from contaminants involved in the
cleaning process for the port.

LINE INSTALLATION FOR THE SPEEDSPOOL®

Always use original equipment manufacturer 0.095 inch (2.41 mm)
replacement line. Lines other than the specified may make the
engine overheat or fail.
There are two methods to replace the SpeedSpool® trimming line:
• Wind the inner reel with new line
• Install a pre-wound inner reel

Winding the Inner Reel With New Line
NOTE:

It Is unnecessary to remove the bump knob to install a
new trimming line.

1.

Cut two pieces of 0.095 inch (2.41 mm) trimming line, 10 feet (3 m) long.

2.

Hold the outer spool and turn the inner reel counterclockwise to line up the arrows on the outer spool
and inner reel (Fig. 14).

3.

Pull old line out of the line loading and line locking holes (Fig.
15 and 16).

4.

Insert a piece of trimming line straight into one of the two
eyelets in the outer spool. Push it up through the line loading
hole in the inner reel (Fig. 15). Do not bend the line when
inserting it into the eyelet.

5.

Insert the line into the locking hole (Fig. 16). Do not push the line
more than a 1/2 inch (12.7 mm) into the line locking hole. The
line will form a small loop (Fig. 16) when it is inserted correctly.

6.

Pull the line from the outer spool until the line is tight against
the inner reel (Fig. 17).

7.

Repeat procedures 4-6 with the second piece of line.

8.

Hold the outer spool. Wind the inner reel counterclockwise
until approximately four (4) inches (102 mm) of line remain
(Fig. 18). 

NOTE:

Do not wind the inner reel before installing the second
piece of line.

9.

If winding the line becomes difficult or if the line jams, pull the
ends of the line from the spool (Fig. 19). Continue winding the
inner reel counterclockwise.

INSTALLING A PRE-WOUND REEL

1.

Turn the bump knob counterclockwise and remove the bump
knob, spring and foam seal (Fig. 20 & 22).

2.

Pull the old inner reel with existing line from the outer spool.

3.

Insert the ends of the prewound inner reel line into the outer
spool eyelets (Fig. 21). Push the new inner reel, arrow side up,
into the outer spool.

4.

Hold the inner reel in place and install the bump knob, spring
and foam seal. Press down and turn the bump knob
clockwise. Grasp the ends and pull firmly to release the line
from the holding slots in the inner reel (Fig. 19).

Releasing the Inner Reel

If the SpeedSpool® does not release line correctly, pull the ends
of the line firmly from the spool (Fig. 19). If this does not the
release line, follow the Cleaning the SpeedSpool® instructions.

WARNING:

To prevent serious injury, never perform maintenance or repairs with unit

running. Always service and repair a cool unit. Disconnect the spark plug wire to ensure
that the unit cannot start.

FREQUENCY

MAINTENANCE REQUIRED

SEE

Before starting

Fill fuel tank with fresh fuel

p. 4

Every 10 hours

Clean and re-oil air filter

p. 6

Every 25 hours

Check and clean spark arrestor
Check spark plug condition and gap

p. 7
p. 7

Every 50 hours

Inspect exhaust port and spark arrestor screen for clogging or
obstruction to assure maximum performance levels

p. 7

Fig. 17

Fig. 18

Fig. 21

Fig. 20

Fig. 19

Fig. 14

Outer
Spool

Bump

Knob

Top View Of The SpeedSpool®

Inner

Reel

Arrows

WARNING:

Always use the correct line length when installing trimming line on the unit.

The line may not release properly if the line is too long.

WARNING:

Never use metal-reinforced line,

wire, chain or rope. These can break off and
become dangerous projectiles.

Fig. 15

Trimming Line

Eyelet

Line Loading Hole

Fig. 16

Line Locking Hole

Bump Knob

Foam Seal

Spring

Inner Reel

CLEANING THE SPEEDSPOOL®

Cleaning the SpeedSpool® may be necessary if:

• A jammed or excessive line must be removed
• The SpeedSpool® becomes difficult to wind or does not operate correctly when bumping the head on

the ground.

1.

Hold the outer spool, and unscrew the bump knob counterclockwise (Fig. 22).

2.

Pull out the bump knob, spring and foam seal (Fig. 20).

3.

Pull the inner reel with existing line from the outer spool.

4.

Remove any existing line from the inner reel before cleaning. Remove any debris or grass from the knob,
spring, inner reel and foam seal. Wash the inner reel with warm soapy water (Fig. 23).

5.

Clean the shaft and the inner surface of the outer spool. To
clean the shaft underneath the plunger, press down on the
plunger (Fig. 24). Remove any dirt or debris from the shaft.

NOTE:

The inner reel must be totally dry before reinstalling it into
the outer spool. Do not lubricate the inner reel or outer
spool assembly.

6.

Place the inner reel into the outer spool. 

7.

Place the bump knob, spring and foam seal onto the inner reel
(Fig. 20).

8.

Press the bump knob down and tighten clockwise.

9.

Install new line as described in Line Installation for the SpeedSpool®.

AIR FILTER MAINTENANCE

Removing the Air Filter/Muffler Cover

1.

Remove the four (4) screws securing the air filter/muffler cover (Fig. 25). Use a flat blade or T20 Torx
bit screwdriver.

2.

Place the blue choke lever in Position 2 (Fig. 25) and pull the cover from the engine. Do not force.

Cleaning the Air Filter

Clean and re-oil the air filter every 10 hours of operation. It is an important item to maintain. Failure to maintain your air
filter properly can result in poor performance or can cause permanent damage to your engine.
1.

Remove air filter/muffler cover. Refer to Removing the Air Filter/Muffler Cover.

2.

Turn cover over and look inside to locate the air filter. Remove the air filter from inside the air
filter/muffler cover (Fig. 26).

3.

Wash the filter in detergent and water (Fig. 27). Rinse the filter
thoroughly. Squeeze out excess water. Allow it to dry completely.

4.

Apply enough clean SAE 30 oil to lightly coat the filter (Fig. 28).

5.

Squeeze the filter to spread and remove excess oil (Fig. 29).

6.

Replace the air filter inside the air filter/muffler cover (Fig. 26).

NOTE:

Operating the unit without the air filter and air filter/muffler
cover assembly  will VOID the warranty.

Reinstalling the Air Filter/Muffler Cover

1.

Place the air filter/muffler cover over the back of the
carburetor and muffler. Align the screw holes.

2.

Insert the four (4) screws into the holes in the air 
filter/muffler cover (Fig. 25) and tighten. 

Do not over tighten

.

Fig. 23

Fig. 24

Fig. 25

Inner

Reel

Shaft

Plunger

Screws

Screws

Blue

Choke

Lever

Fig. 26

Air filter

Inside Muffler C over

Fig. 22

WARNING:

To avoid serious personal injury, always turn your unit off and allow it to

cool before you clean or service it.

Fig. 27

Fig. 29

Fig. 28

Summary of Contents for WH25CS

Page 1: ...he information for future reference All information illustrations and specifications in this manual are based on the latest product information available at the time of printing We reserve the right t...

Page 2: ...dust mask if the operation is dusty Wear heavy long pants boots gloves and a long sleeve shirt Do not wear loose clothing jewelry short pants sandals or go IMPORTANT SAFETY INSTRUCTIONS RULES FOR SAF...

Page 3: ...and accessories for this unit These are available from your authorized service dealer Use of any unauthorized parts or accessories could lead to serious injury to the user or damage to the unit and v...

Page 4: ...in reasons for the unit not running properly Be sure to use fresh clean unleaded fuel Follow the instructions carefully for the proper fuel oil mixture Definition of Blended Fuels Today s fuels are of...

Page 5: ...e button of the cutting attachment into the 90 hole Fig 10 WARNING Before you begin using any attachment read and understand the manual that came with the attachment Follow all safety information cont...

Page 6: ...irs with unit running Always service and repair a cool unit Disconnect the spark plug wire to ensure that the unit cannot start FREQUENCY MAINTENANCE REQUIRED SEE Before starting Fill fuel tank with f...

Page 7: ...he unit Do not use strong detergents Household cleaners that contain aromatic oils such as pine and lemon and solvents such as kerosene can damage plastic housing or handle Wipe off any moisture with...

Page 8: ...RATIVE EMISSION CONTROL WARRANTY STATEMENT Your Warranty Rights and Obligations The California Air Resources Board and MTD LLC MTD is pleased to explain the evaporative emission control system s warra...

Page 9: ...que ou d un distributeur agr Un exemple de plaque signal tique est pr sent ci dessous All information illustrations and specifications in this manual are based on the latest product information availa...

Page 10: ...tuer Ne faites fonctionner cet appareil qu l ext rieur dans un endroit bien a r Portez des lunettes de s curit conformes aux normes ANSI Z87 1 1989 ainsi que des prot ge oreilles durant l utilisation...

Page 11: ...pour l entretien de cet appareil Ces pi ces sont disponibles aupr s de votre concessionnaire agr N utilisez pas de pi ces ou accessoires non con us par original pour cet appareil Cela pourrait causer...

Page 12: ...ment c est que le carburant est vieux ou mal m lang Prenez soin d utiliser de l essence sans plomb fra che et propre Suivez la lettre les instructions de m lange de carburant et d huile D finition des...

Page 13: ...NT pour viter des blessures graves teignez l appareil avant d enlever ou d installer des accessoires MISE EN GARDE verrouillez le bouton de d clenchement dans le trou principal et vissez bien le bouto...

Page 14: ...ble de la bougie pour pr venir la mise en route FR QUENCE ENTRETIEN REQUIS R F Avant d marrage Remplissez le r servoir du m lange d essence huile appropri p F4 Toutes les 10 heures Nettoyez le filtre...

Page 15: ...sse N utilisez pas de d tergents concentr s Les nettoyants m nagers contenant des huiles aromatiques tel que le pin et le citron et les solvants tel que le k ros ne peuvent endommager le bo tier ou la...

Page 16: ...es ressources en air de Californie et MTD LLC MTD ont le plaisir de d finir la garantie du syst me de contr le des missions par vaporation pour votre mod le de petit moteur hors route type pour quipem...

Page 17: ...del modelo P N 769 03585 01 08 INDICE DE CONTENIDOS Llamadas a apoyo al cliente E1 Normas para una operaci n segura E2 Conozca su unidad E4 Instructions de montaje E4 Informaci n del aceite y del com...

Page 18: ...n una sala o edificio cerrado Los gases de escape de mon xido de carbono pueden ser letales en un rea cerrada Opere esta unidad s lo en un rea exterior bien ventilada Use lentes o gafas de protecci n...

Page 19: ...distribuidor autorizado No use piezas accesorios ni auxiliares que no hayan sido dise ados para esta unidad Su uso puede conducir a que el usuario sufra graves lesiones o al da o de la unidad y a la i...

Page 20: ...viejo o mal mezclado son los motivos principales del mal funcionamiento de la unidad Aseg rese de usar combustible nuevo limpio y sin plomo Siga las instrucciones en detalle para mezclar correctament...

Page 21: ...d antes de sacar o instalar accesorios PRECAUCI N Trabe el bot n de desconexi n en el orificio primario y ajuste bien la perilla antes de operar esta unidad PRECAUCI N El accesorio de corte y los acce...

Page 22: ...n la unidad funcionando Realice siempre el mantenimiento y las reparaciones con la unidad fr a Desconecte el cable de la buj a de encendido para cerciorarse de que la unidad no arrancar FRECUENCIA MAN...

Page 23: ...120 pulg libras No ajuste demasiado LIMPIEZA Use un cepillo peque o para limpiar la parte exterior de la unidad No use detergentes fuertes Los limpiadores dom sticos que contienen aceites arom ticos...

Page 24: ...N DE GARANT A DE CONTROL DE EMISIONES EVAPORATIVAS PARA CALIFORNIA Los Derechos y Obligaciones de Usted seg n la Garant a El Consejo de Recursos del Aire Air Resources Board de California y MTD LLC M...

Page 25: ...Clutch Springs Qty 2 Items Not Shown 29 1 2 3 7 9 11 3 6 10 12 13 40 41 19 42 17 14 15 16 18 25 26 27 21 22 32 23 20 39 35 37 38 8 33 30 29 28 Item Part No Description 1 753 04511 Air Cleaner Cover As...

Page 26: ...lamp Assembly includes 19 16 791 181852 Lower Flexible Drive Shaft 17 791 180531 Shield Mount Screw 18 791 181857 Bushing Housing Assembly 19 791 145569 Anti Rotation Screw 20 791 181659 Shield Assemb...

Page 27: ...E11 NOTES...

Page 28: ...roduit d une fabrication plus ancienne Aucune garantie implicite y compris toute garantie de valeur marchande ou d adaptation une fin particuli re ne s applique apr s la p riode applicable de garantie...

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