Yard-man YM25 User Manual Page 17
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17
Idle Speed Screw
Figure 33
SECTION 7: MAINTENANCE AND REPAIR INSTRUCTIONS
Carburetor Adjustment
The idle speed of the engine is adjustable through the air
filter/muffler cover. See Figure 33.
NOTE: Careless adjustments can seriously damage your
unit. An authorized service dealer should make
carburetor adjustments.
Check Fuel Mixture
Old and/or improperly mixed fuel is usually the reason for
improper unit performance. Drain and refill the tank with
fresh, properly mixed fuel prior to making any
adjustments. Refer to Oil and Fuel Information.
Clean Air Filter
The condition of the air filter is important to the operation
of the unit. A dirty air filter will restrict air flow and change
the air/fuel mixture. This is often mistaken for an out of
adjustment carburetor. Check the condition of the air
filter before adjusting the idle speed screw. Refer to Air
Filter Maintenance.
Adjust Idle Speed
WARNING: The cutting attachment may
spin during idle speed adjustments. Wear
protective clothing and observe all safety
instructions to prevent serious personal
injury.
If, after checking the fuel mixture and cleaning the air
filter, the engine still will not idle, adjust the idle speed as
follows.
1. Start the engine and let it run at a high idle for a
minute to warm up. See Starting/Stopping
Instructions.
2. Release the throttle trigger and let the engine idle. If
the engine stops, insert a small Phillips or flat blade
screwdriver into the hole in the air filter/muffler cover.
See Figure 33. Turn the idle speed screw in,
clockwise, 1/8 of a turn at a time (as needed) until the
engine idles smoothly.
NOTE: The cutting attachment should not rotate when
the engine idles.
3. If the cutting attachment rotates when the engine idles,
turn the idle speed screw counterclockwise 1/8 of a
turn at a time (as needed), to reduce idle speed.
Checking the fuel mixture, cleaning the air filter, and
adjusting the idle speed should solve most engine
problems.
If this is not the case and the following are all true:
• The engine will not idle
• The engine hesitates or stalls on acceleration
• There is a loss of engine power
Have the carburetor adjusted by an authorized service
dealer.
WARNING: After turning the unit off, make
sure the cutting attachment has stopped
before setting the unit down. This helps
prevent serious personal injury.
- Operator’s Manual 1
- While Operating 4
- Other Safety Warnings 4
- SECTION 2: KNOW YOUR UNIT 6
- Starting Instructions 9
- Stopping Instructions 9
- CAUTION: 10
- Holding the Trimmer 11
- Decorative Trimming 11
- Maintenance Schedule 12
- Line Installation 12
- Installing a Pre-wound Reel 13
- Cleaning the SpeedSpool 14
- SpeedSpool 14
- Replacement Parts 14
- Air Filter Maintenance 15
- Spark Arrestor Maintenance 16
- Carburetor Adjustment 17
- 0.020 in 18
- (0.5 mm) 18
- Figure 34 18
- SECTION 9: SPECIFICATIONS 20
- P.O. Box 361131 22
- Cleveland, OH 44136-0019 22
- Manuel de l'utilisateur 23
- TABLE DES MATIÈRES 24
- TROUVER LE NUMÉRO DE MODÈLE 24
- SERVICE TECHNIQUE 24
- VISITEZ NOTRE SITE WEB 24
- VERTISSEMENT! 25
- Californie 25
- AVERTISSEMENT 25
- Désherbeuses À Essence 26
- APPLICATIONS 28
- INSTRUCTIONS DE DÉMARRAGE 31
- INSTRUCTIONS D'ARRÊT 31
- SECTION 6: MODE D’EMPLO 32
- PROGRAMME D'ENTRETIEN 34
- INSTALLATION DU FIL 34
- ENTRETIEN DU FILTRE À AIR 37
- ENTRETIEN DU PARE-ÉTINCELLES 38
- RÉGLAGE DU CARBURATEUR 39
- (0,020 po) 40
- SECTION 9: CARACTERISTIQUES 42
- Garantie du fabricant 43
- Manuel del Dueño/Operador 45
- PARACHISPAS 47
- ADVERTENCIA 47
- Durante la Operacion 48
- APLICACIONES 50
- COMBUSTIBLE 52
- INSTRUCCIONES DE ARRANQUE 53
- INSTRUCCIONES DE APAGADO 53
- COMO SOSTENER EL RECORTADOR 55
- AL RECORTAR 55
- RECORTE DECORATIVO 55
- PROGRAMA DE MANTENIMIENTO 56
- INSTALACIÓN DE LA LÍNEA 56
- LIMPIEZA DEL SPEEDSPOOL 58
- Limpieza del Filtro de Aire 59
- MANTENIMIENTO DEL PARACHISPAS 60
- AJUSTE DEL CARBURADOR 61
- ADVERTENCIA: 62
- SECCIÓN 9: ESPECIFICACIONES 64
- PARTS LIST 66
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