• Meets EPA Phase III Emission Standards and CARB Emission Standards
www.wenproducts.com
2012
ENGINE IDENTIFICATION
For information and questions, please contact the Customer Service Help Line by calling 800-232-
1195. Certain information will be requested by the Customer Service Representative and to facilitate
that, please fill in the information below.
Refer to the illustration below for the location of Serial Number. Record engine information in the
spaces provided below.
DATE OF PURCHASE: ______________________________________________
PURCHASED FROM: ______________________________________________
ITEM NUMBER: ____________________________________________________
ENGINE SERIAL NUMBER: _________________________________________
Serial Number
SERVICE RECORD
Record Service Dates:
Date Date Date Date Date Date
Oil Change
Change spark plug
Clean Fuel Tank
Clean Air Cleaner
i
TABLE OF CONTENTS
ENGINE IDENTIFICATION .......................................................................................................... i
SERVICE RECORD ......................................................................................................................... i
SET UP .............................................................................................................................................. 6
.
This manual provides information regarding the safe operation and maintenance of this product.
Every effort has been made to ensure the accuracy of the information in this manual.
WEN Power
prior notice.
Please keep this manual available to all users during the entire life of the product.
TM
reserves the right to change this product and specifications at any time without
Special Messages
This manual contains special messages to bring attention to potential safety concerns, engine
damage as well as helpful operating and servicing information. Please read all the information
carefully to avoid injury and machine damage.
Questions? Problems?
In order to answer questions and solve problems in the most efficient and speedy manner,
contact Customer Service at:
(800) 232-1195M-F 8-5 CST
NOTICE REGARDING EMISSIONS
Engines that are certified to comply with U.S. EPA emission regulations for SORE (Small Off
Road Equipment), are certified to operate on regular unleaded gasoline, and may include the
following emission control systems: (EM) Engine Modifications and (TWC) Three-Way Catalyst
(if so equipped).
1
SAFETY INFORMATION
Before operating this engine read and observe all warnings, cautions, and instructions on this
sheet, on the engine, and in the Owner’s Manual.
NOTE: The following safety information is not meant to cover all possible conditions and
situations that may occur. Read the entire Owner’s Manual for safety and operating
instructions. Failure to follow instructions and safety information could result in serious
injury or death.
This safety alert symbol is used to identify safety information about hazards that can result in
personal injury.
A signal word (DANGER, WARNING, or CAUTION) is used with
the alert symbol to indicate the likelihood and the potential severity of injury. In
addition, a hazard symbol may be used to represent the type of hazard.
DANGER indicates a hazard, which, if not avoided, will result in death or serious
injury.
WARNING indicates a hazard, which, if not avoided, could result in death or
serious injury.
CAUTION indicates a hazard, which, if not avoided, might result in minor or
moderate injury.
CAUTION, when used without the alert symbol, indicates a situation that could
result in damage to the engine or engine.
SAFETY SYMBOLS AND MEANINGS
2
GENERAL SAFETY PROCEDURES
For any questions regarding the hazard and safety notices listed in this manual or on the
product, please call (800) 232-1195 M-F 8-5 CST before using the engine.
DANGER: CARBON MONOXIDE. Using an engine indoors CAN KILL
YOU IN MINUTES.
Engine exhaust contains carbon monoxide (CO). This is a poison gas you cannot
see or smell. If you can smell the engine exhaust, you are breathing CO. But even
if you cannot smell the exhaust, you could be breathing CO.
• NEVER use an engine inside homes, garages, crawlspaces, or other partly enclosed
areas. Deadly levels of carbon monoxide can build up in these areas. Using a fan or
opening windows and doors does NOT supply enough fresh air.
• ONLY use an engine outside and far away from windows, doors, and vents. These
openings can pull in engine exhaust.
Even if you use an engine correctly, CO may leak into the home. ALWAYS use a batterypowered or battery-backup CO alarm in the home.
If you start to feel sick, dizzy, or weak after the engine has been running, move to fresh air
RIGHT AWAY. See a doctor. You may have carbon monoxide poisoning.
WARNING: The exhaust from this product contains chemicals known to the
State of California to cause cancer, birth defects, or other reproductive harm.
WARNING: This engine may emit highly
flammable and explosive gasoline vapors, which can
cause severe burns or even death, if ignited. A nearby open flame can lead to
explosion even if not directly in contact with gasoline.
• Do not operate near open flame.
• Do not smoke near engine.
• Always operate on a firm, level surface.
• Always turn engine off before refueling. Allow engine to cool for at least 2 minutes
before removing fuel cap. Loosen cap slowly to relieve pressure in tank.
• Do not overfill fuel tank. Gasoline may expand during operation. Do not fill to the
top of the tank. Allow for expansion.
• Always check for spilled fuel before operating.
• Empty fuel tank before storing or transporting the engine.
• Before transporting, turn fuel valve to off and disconnect spark plug wire.
3
WARNING: This engine produces heat when running. Temperatures near
exhaust can exceed 150º F (65º C).
• Do not touch hot surfaces. Pay attention to warning labels on the engine identifying hot
parts of the machine.
• Allow engine to cool down after use before touching engine or areas of the engine that
become hot during use.
CAUTION: Misuse of this engine can damage it or shorten its life.
• Use engine only for its intended purposes.
• Operate only on dry, level surfaces.
• Turn engine switch to “off” position when the engine is not running.
IMPORTANT SAFETY INSTRUCTIONS
•SAVE THESE INSTRUCTIONS – This manual contains important instructions for WEN
engine that should be followed during installation and maintenance of the engine.
• Engines vibrate in normal use. Have damaged items repaired or replaced as necessary.
In addition to the previous safety notices, please become familiar with the safety and hazard
markings on the engine.
4
ENGINE COMPONENTS
Please familiarize yourself with the locations and functions of the various components and controls
of your engine.
Starter Handle
Dipstick
Fuel Cap
Air Cleaner
Muffler
5
SET UP
Warning:
TO PREVENT SERIOUS INJURY:
Operate only with proper spark arrestor installed.
Operation of this equipment may create sparks that can start fires around dry vegetation. A spark
arrestor may be required. The operator should contact local fire agencies for laws or regulations
relating to fire prevention requirements.
The operator should contact local fire agencies for laws or regulations relating to fire
prevention requirements.
At high altitudes, the engine’s carburetor, governor (if so equipped), and any other parts that
control the fuel-air ratio will need to be adjusted by a qualified mechanic to allow efficient high
altitude use and to prevent damage to the engine and any other devices used with this product.
1. IMPORTANT: If you have any doubts about your
ability to perform the following procedures, have a
qualified service technician perform the installation.
2. Install this engine on a lawn mower only.
3. Set the Engine upright on the mower, and align at least
three 3/8” diameter coarse threaded engine mounting
holes with mower mounting holes.
NOTE: Depending on the mower, it may be necessary to
drill mounting holes or make a mounting plate to align
with the engine mounting holes. Only a qualified
technician should attempt these solutions.
4. Use 3/8” diameter, coarse threaded, hardened,
stainless steel Bolts, Lock Washers, and
Washers (not included) of appropriate length
to secure the Engine to the mower.
Make sure the hardware does not contact
moving parts.
5. Insert the mower’s brake cable sheath through
the hole in the Brake bracket. Secure the
mower brake cable to the brake arm. Adjust
the brake cable sheath to remove all slack and
secure it in place using the adjusting nuts on
the cable sheath, as shown in the illustration
below.
THE ENGINE BRAKE IS FOR EMERGENCY SHUTOFF; DO NOT REPLACE THE BRAKE
SPRING WITH A WEAKER SPRING. If operating the engine brake is too difficult, a qualified
technician must install a different brake handle on the mower.
Note:
according to mower manufacturer’s instructions.
6. Attach the end of the mower’s Choke Cable to the Choke. Use the Bracket and Bolt to secure
7. This engine is set to a single speed that should not be adjusted.
8. Refer to the mower’s service manual for instructions on how to properly attach a belt drive
The brake cable on some mowers may need to be adjusted in a different manner. Install
its sheath in place as shown above.
pulley, chain drive gear, etc. onto the output shaft of the engine.
6
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