Poulan Pro PR121ES User Manual
SAVE THIS MANUAL FOR FUTURE USE.
CONSERVEZ LE GUIDE POUR CONSULTATION ULTÉRIEURE.
SNOW ENGINE
MOTEUR D’HIVER
FOR COLD WEATHER USE ONLY
POUR UTILISATION PAR TEMPS FROIDS SEULEMENT
Operation Manual / Manuel d’opération
This spark ignition system complies with the Canadian standard ICES-002.
Ce système d’allumage par étincelle de véhicule est conforme à la norme NMB-002 du Canada.
PGM45000 01/04/16 rev B
California Proposition 65
WARNING:
The engine exhaust from this product contains chemicals
known to the state of California to
defects, or other reproductive harm.
cause cancer and birth
DANGER
CARBON MONOXIDE HAZARD
NEVER use engine inside homes, garages, crawl spaces, or other partially enclosed areas. Poisonous
gases that can be harmful or fatal can build up in these areas. Using a fan and opening doors or windows does NOT provide enough fresh air. Engine exhaust contains carbon monoxide - a poisonous
gas that can be harmful or fatal. You CANNOT see or smell this gas.
Use a battery-powered carbon monoxide detector when running an engine.
If you start to feel sick, dizzy, or weak while using an engine, shut it off and get to fresh air RIGHT
AWAY. See a doctor. You may have carbon monoxide poisoning.
Using an engine or engine application indoors CAN KILL YOU IN MINUTES.
Exhaust contains carbon monoxide, a poison gas you cannot see or smell.
NEVER use in the home or in partly
enclosed areas such as garages.
Avoid other engine dangers.
READ MANUAL BEFORE USE.
ONLY use outdoors and far from
open windows doors, and vents.
DANGER
RISQUE DE MONOXYDE DE CARBONE
Ne JAMAIS utiliser le moteur à l’intérieur des maisons, garages, des espaces de vide sanitaire, ou
autres secteurs partiellement clos. Les gaz toxiques peuvent s’accumuler dans ces secteurs et peuvent devenir nocifs ou mortels. L’utilisation d’un ventilateur et l’ouverture des portes et fenêtres NE
fournissent pas assez d’air frais. L’échappement du moteur contient du monoxyde de carbone, un gaz
toxique qui peut être dommageable ou fatal. Vous NE POUVEZ PAS voir ou sentir ce gaz.
Utiliser un détecteur de monoxyde de carbone à pile lorsque le moteur tourne.
En cas de malaise, d’étourdissement ou de faiblesse durant le fonctionnement du moteur, couper
l’alimentation et sortir à l’air frais SUR-LE-CHAMP. Consultez un médecin. Vous avez peut-être un
empoisonnement au monoxyde de carbone.
DANGER
L’utilisation d’un moteur ou d’une application alimentée par moteur à l’intérieur
PEUT TUER EN QUELQUES MINUTES. L’échappement contient du monoxyde
NE JAMAIS utiliser dans la maison
ou dans des endroits partiellement
de carbone, un gaz toxique impossible à voir et à sentir.
Utilisez SEULEMENT à l’extérieur,
loin des fenêtres et portes
fermés tels que des garages.
Éviter les dangers d’autres moteurs
LISEZ LE MANUEL AVANT L'UTILISATION.
ouvertes et des prises d’air.
Contents / Contenu
Introduction 2
Engine and Safety Symbols 2
Engine Safety 3
Controls & Features 4
Before Operation 5
Pre-Operation Checks 5
Safe Operation Precautions 5
Operation 6-7
Before Starting the Engine 6
Starting the Engine (Manual Start) 6
Pull Start Procedure 6
Starting the Engine (Electric Start) 6
Stopping the Engine 7
High Altitude Operation 7
Servicing Your Engine 8-10
The Importance of Maintenance 8
Maintenance Safety Instructions 8
Refueling 9
Fuel Recommendations 9
Engine Oil Level Check 9
Snow Engine Oil Change Procedure 10
Engine Oil Recommendations 10
Spark Plug Maintenance 10
Helpful Tips and Suggestions 11-12
Storing Your Engine 11
Maintenance Schedule 11
Storage Precautions 12
Transport 12
Technical & Consumer Information 12-13
Emission Control System Information 12
Consumer Information 12
Engine Model Number 13
& Serial Numbering System
Warranty 14
Introduction 15
Symboles de sécurité et du moteur 15
Sécurité du moteur 16
Commandes & fonctions 17
Avant l’utilisation 18
Vérications avant utilisation 18
Mesures de sécurité de fonctionnement 18
Utilisation 19-20
Avant de démarrer le moteur 19
Démarrage du moteur (démarrage manuel) 19
Procédure de démarrage à rappel 19
Démarrage du moteur (démarrage électrique) 19
Arrêt du moteur 20
Utilisation à haute altitude 20
L’entretien de votre moteur 21-23
L’importance de l’entretien 21
Instructions de sécurité d’entretien 21
Ravitaillement 22
Recommandations de carburant 22
Vérication du niveau d’huile 22
Neiger Procédure de Changement de Pétrole de Moteur 23
Recommandations d’huile à moteur 23
Entretien de la bougie 23
Suggestions et conseils utiles 24-25
Entreposage de votre moteur 24
Calendrier d’entretien 24
Précautions d’entreposage 25
Transport 25
Information technique & consommat eur 25-26
Information du système de contrôle des émissions 25
Information pour le consommateur 25
Numéro de modèle du moteur 26
& système de numéros de série
Garantie 27
Snow Engine Manual 1rev. 01/04/16
Introduction
When using this engine, your safety and the safety of others should be your top priority.
To assist you in making informed decisions regarding safety, we have provided operating procedures and other information on labels
and in this manual. This information warns you of potential hazards that could hurt you or others.
Please stay safety conscious when using this engine. We have provided important safety information in a variety of forms, including:
• Safety Labels: placed on the engine.
• Safety messages: preceded by a safety alert symbol and one of three signal words, DANGER, WARNING, or CAUTION. These safety
alert symbols mean:
DANGER
WARNING
CAUTION
• Safety Headings: such as IMPORTANT SAFETY INSTRUCTIONS.
• Safety Section: such as ENGINE SAFETY.
• Instructions: How to use this engine correctly and safely.
Thoroughly read and review this manual to know how to stay safe and get maximum benet and enjoyment from using this engine.
If you do not follow instructions, it WILL cause you
SERIOUS INJURY or DEATH.
If you do not follow instructions, it MAY cause you
SERIOUS INJURY or DEATH.
If you do not follow instructions, it may cause you
SERIOUS INJURY or EQUIPMENT DAMAGE.
Engine and Safety Symbols
WARNING
IMPORTANT SAFETY SYMBOLS
Shown below are important safety symbols found throughout this manual. Become familiar with these, as they are important to the
safe and efcient use of your engine.
OFF
RUN
FUEL
START
Choke Control Fuel Control Primer
Choke PositionIdle Down
Control
(if equipped)
ON
PGH45600
Push/Pull
Key Switch
Keyed RUN/
STOP Switch
(if equipped)
Hot SurfaceShock
3X’s
MAX
Bulb
Primer RUN/STOP
Recoil
Handle
Switch
RUN
STOP
Electric Starter
Adaptor Plug
Stop Key Insert
Snow Engine Manual 2rev. 01/04/16
Starter Button
(electric
start only)
Engine Safety
WARNING
IMPORTANT SAFETY INSTRUCTIONS
Accidents occur less frequently when instructions are followed, the operator is safety conscious and the engine is properly maintained.
Some of the most common hazards are discussed below, along with the best way to protect yourself and others.
• This engine is for COLD WEATHER USE ONLY.
• FUEL STABILIZER IS RECOMMENDED FOR LONG TERM STORAGE.
Owner and Operator Responsibilities
Owners and operators should perform the following suggestions:
• Carefully read the owners manual.
• Follow the instructions in this manual carefully.
• Familiarize yourself with all controls and know how to stop the engine quickly in case of an emergency.
• Keep children away from the engine and do not let them operate it. Keep children and pets away from the area of operation.
• Operate this engine in well-ventilated areas. NEVER run engine indoors.
Refueling the Engine
Gasoline is extremely ammable, and gasoline vapor can explode. When refueling the engine, take the following precautions.
• Perform when the engine is cool.
• Refuel outdoors in well-ventilated areas.
• The engine must not be running.
• Make sure the engine is grounded to prevent static electrical spark.
• Do not smoke or use cell phones when refueling.
• Keep away from ames or sparks.
• If spillage occurs, be sure all areas are dry and vapor has dissipated prior to starting the engine.
Exhaust
CARBON MONOXIDE HAZARD:
DANGER
Heat Shield
• The snow engine is equipped with a heat shield that is designed to allow the engine to operate
in cold conditions (see starting procedure for correct choke placement when starting the engine).
The heat shield and components inside are hot. Make sure the engine has sufcient time to
cool before touching the shield or performing maintenance work inside the shield.
See Maintenance Section for further information.
• To prevent re hazards and for adequate ventilation, keep the engine at least 3 feet (1 meter)
away from building walls and other equipment during operation. Do not place ammable
objects close to the engine.
Other Equipment
Review the instructions provided with the equipment powered by this engine for any additional safety precautions that should be
observed in conjunction with engine startup, shutdown, operation, or protective safety gear that may be needed to operate the
equipment.
Engine exhaust is dangerous because of intense heat and emission of carbon monoxide, a
poisonous gas. Avoid inhalation of exhaust gas. Always run the engine in a well-ventilated area.
Never run the engine indoors.
Heat
Shields
WARNING
Do not touch hot sections of engine (see figure above).
The hot sections of the engine can cause severe burns.
Snow Engine Manual 3rev. 01/04/16
Controls & Features
3X’s
MAX
CONTROLS
1. Choke Control Knob
The Choke Control Knob opens and closes the choke valve in the carburetor. The “START” position enriches the fuel mixture which
allows easier starting a cold engine. The “RUN” position provides the correct fuel mixture once engine warms up. Never try to shut the
engine down using the Choke Control Knob.
2. Idle-Down Control Ring (if equipped) (not shown)
The Idle-Down Control Ring sets engine speed from high-speed to low-speed. Rotate the ring clockwise, “RUN” position for highspeed. This control MUST be set in the “RUN” position for starting a cold engine. By rotating the ring counterclockwise, “IDLE”
position, will allow your engine to run at low-speed. DO NOT OPERATE EQUIPMENT IN THE IDLE POSITION. Note: the idle-down
control is intended to be either in “RUN” or “IDLE” positions only.
3. Engine RUN/STOP Rocker Switch (or optional Rotary Key Switch)
The Engine Rocker Switch (or optional Rotary Key Switch) enables and disables the ignition system. Turn the engine switch to the
RUN position to start the engine. Turn the Engine Rocker Switch to the STOP position to stop the engine.
4. Fuel Control Knob
The Fuel Control Knob opens and closes the passage between the fuel tank and carburetor. The Fuel Control Knob must be in the
“ON” position for the engine to run. When the engine is not in use, be sure to turn the Fuel Control Knob to the “OFF” position.
5. Safety Key Switch
The Safety Key Switch enables the engine electrical system and must be installed to start the engine. On some models this key switch
is incorporated with the RUN/STOP switch, #3.
6. Primer Bulb
The Primer Bulb system is designed to enrichen the fuel mixture for starting a cold engine. DO NOT over prime the fuel system.
To properly use the Primer Bulb system, depress Primer Bulb 3 times maximum when starting a cold engine. Do not use Primer
Bulb system when attempting to start a warm engine.
7. Oversized Recoil Handle
The engine is started by pulling the Recoil Handle. Always grip rmly and have your body positioned properly when pulling.
When starting the engine:
· Slowly pull Recoil Handle until resistance is felt.
· Then pull rmly the full length of the rope to start engine.
· Never wrap thumb around Recoil Handle in the event of
engine kick-back.
8. Oversized Gas Cap
Allows for easy opening and closing for more efcient refueling.
9. Electric Start (if equipped)
Used to start the engine with 120VAC extension cord.
Always use correct size extension cord to prevent
electric starter damage.
2
Optional combined Engine Run/Stop
and Safety Key Switch (3 & 5)
8
1
3
7
4
10
10. High Oil Fill Tube (if equipped)
Allows convenient location for adding oil during the life
of the engine. Check oil level with lower oil ll plug (10A)
per owner’s manual instructions.
6
5
9
10 A10 A
11. Oil Drain
The oil drain can be located on either side and
on some models extend out below the recoil housing.
11
Snow Engine Manual 4rev. 01/04/16
Before Operation
PRE-OPERATION CHECKS
For your safety, and to maximize the service life of your equipment, it is very important to take a few moments before you operate the
engine to check its condition. Be sure to take care of any problem you nd, or have your servicing dealer correct it, before you operate
the engine.
WARNING
Improperly maintaining this engine or failing to correct a problem before operation, could cause a
malfunction in which you could be seriously injured.
Always perform a pre-operation inspection before each operation and correct any problem.
Before beginning your pre-operation checks, be sure the engine is level and the engine switch is in the STOP position.
Check the General Condition of the Engine
• Remove any excess dirt or debris, especially around the heat shield, recoil starter, and cylinder head ns.
• Inspect for signs of damage and oil leakage.
• Be sure all shields and covers are in place. All nuts, bolts, and screws must be tight.
Check the Engine
• Check the engine oil level. Running the engine with a low oil level or improper oil can cause engine damage. To avoid the
inconvenience of an unexpected shutdown, always check the engine oil on a level surface before startup. Engine may be shipped
with or without oil. 5W-30 oil is recommended for general use. Synthetic oil is an acceptable alternative (refer to Engine Oil Level
Check (page 9) for proper engine oil levels).
• Check the fuel level before start-up. Since the engine must be cool before refueling, starting with a full tank will help to eliminate or
reduce operating interruptions for refueling.
Electric Start
• Determine what type of power source outlet you will be connecting the power cord to. If the starter is equipped with a 120V AC
electrical requirement, make sure to use the appropriate 120V AC household current input.
• Determine if your power source has a Ground Fault Interrupt (GFI) three-wire system by consulting with a licensed electrician.
If your power source does not have a GFI three-way ground system, DO NOT USE THE ELECTRIC STARTER due to a possible
hazardous condition.
Check all Equipment Powered by this Engine
Review the instructions provided with the equipment powered by this engine for all precautions and procedures that should be
followed before starting the engine.
SAFE OPERATING PRECAUTIONS
Review the instructions provided with the equipment powered by this engine for any safety precautions that should be observed in
conjunction with starting, shutting down, or operating the engine.
WARNING
This engine is designed for COLD WEATHER USE ONLY.
WARNING
Carbon monoxide gas is toxic. Breathing it can cause unconsciousness and/or death.
Avoid any areas or actions that expose you to carbon monoxide.
WARNING
DO NOT place hands on or near the exhaust system while starting.
Snow Engine Manual 5rev. 01/04/16
Operation
3X’s
MAX
BEFORE STARTING THE ENGINE (fig. 1)
Before starting the Engine, carefully note the following:
• Check engine oil level.
• Allow Engine To Warm Up for approximately 15-20 seconds before rotating Choke Knob to Run Position.
• If inconsistent engine speeds are experienced when Choke Knob is rotated to Run Position:
1. Move Choke Knob to Mid-Point Between Run and Start Positions and allow Engine to develop additional operating heat.
2. After Engine has warmed up, rotate Choke Knob to Run Position.
STARTING THE ENGINE (MANUAL START) (fig. 1)
1. Rotate Choke Knob to START position. Rotate Idle-Down Ring clockwise to “RUN” position (if equipped). Note: The engine
pictured on these pages does not have an Idle Down feature.
2. Select RUN on Run/Stop Rocker Switch or turn Rotary Key Switch to Run (see insert).
3. Rotate Fuel Control Knob to ON position.
4. Only on models with individual Key Switch and Rocker Switch: Insert Safety Key into slot (DO NOT TURN SAFETY KEY SWITCH).
Be sure you feel a “snap” when Safety Key is fully inserted.
5. Prime system: 3 primes maximum. DO NOT over prime system. Make sure you cover the vent hole before the primer is compressed.
Hold the primer bulb in the compressed position for one full second each time you press it. Repeat for a total of 3 primes.
6. Firmly grasp rope handle. Position your body so you are standing close to engine. Pull slowly until resistance is felt, then pull rope
rmly and quickly to start engine and avoid kickback. DO NOT stand far away from engine or over extend the rope handle. Doing
this will damage the recoil.
PULL START PROCEDURE
1. Firmly grasp recoil handle. 2. Position your body so you are
standing close to engine.
3. PULL SLOWLY UNTIL RESISTANCE
IS FELT, then pull rope firmly and
quickly to start engine and avoid
kickback.
STARTING THE ENGINE (ELECTRIC START) (fig. 1)
Follow steps 1-5 for manual engine start procedure.
6A.Use a 3-wire extension cord and plug cord into starter motor adaptor rst.
Then plug cord into wall receptacle. Use appropriately sized extension cord
(a minimum of 16 gage, 3-wire, 13 amp, no longer that 25 feet, and suitable
for outdoor use) to prevent damage to electric starter.
7. Press and hold starter button.
CAUTION
Do not hold the electric starter button down for more than 5 seconds.
Wait at least 1 minute before additional starting attempts.
• IMPORTANT: After engine starts, unplug the cord from the starter adaptor.
WARNING
If additional extension cord is needed, make sure to use
a three-wire cord. Do not exceed extension cord length
provided by Equipment Manufacturer. Only use extension
cord with equal to or greater AWG size wire that is
provided by the Equipment Manufacturer.
1
fig.1
WARNING
Do not stand far away from engine
or over-extend the rope handle.
Doing this will damage the recoil
Optional combined
Engine Run/Stop
and Safety Key Switch
6
2
6A
4
Snow Engine Manual 6rev. 01/04/16
7
Operation CONTINUED
3X’s
MAX
STOPPING THE ENGINE (fig. 2)
To stop the engine in an emergency:
1. Flip Rocker Switch to STOP position (with a rotary type switch, turn the key
to the STOP position (see insert).
2. Pull Safety Key from Engine.
Under normal conditions, use the following procedure:
1. Flip Rocker Switch to STOP position (with a rotary type switch, turn the
key to the STOP position (see insert).
2. Pull Safety Key from Engine and store in a safe place for future use.
Optional combined
Engine Run/Stop
and Safety Key Switch
1
2
fig.2
HIGH ALTITUDE OPERATION
Carburetor Modifications
The standard carburetor air-fuel mixture may be too rich when operated at high altitude resulting in possible decreased performance
and increased fuel consumption. Please have an authorized Service Center modify this engine’s carburetor if it is operated
continuously above 5000 feet. Failure to modify may result in poor engine performance, spark plug fouling, hard starting, and
increased emissions.
Carburetor modication by an authorized Service Center will improve performance and allow this engine to continually meet US EPA
and California ARB emission standards throughout its useful life.
Important Note
When the carburetor has been modied for high altitude operation, the air-fuel mixture may be too lean for operation at 5000 feet or
below. This could result in the engine overheating and could cause serious engine damage. Please have an authorized Service Center
restore high altitude converted carburetors back to the original factory specication before operating below 5000 feet.
To locate the nearest dealer, please visit our website or call our toll free hotline:
www.lctusa.com
Toll Free: (800) 558-5402
Snow Engine Manual 7rev. 01/04/16
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