Operator’s Manual
Viper® 173cc 4-Cycle Engine
3
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WARNINGS AND SAFETY PRECAUTIONS
OPERATOR’S RESPONSIBILITY
Accurate, safe and effective use of this engine is the operator’s
responsibility.
• Read and follow all safety instructions.
• Maintain the engine according to directions and schedule
included in this Viper® operator’s manual.
• Ensure that anyone who uses the engine is familiar with and
understands all controls and safety precautions.
SAFETY MESSAGES
Your manual contains special messages to bring attention to
potential safety concerns, engine damage as well as helpful op-
erating and servicing information. Please read all the informa-
tion carefully to avoid injury and engine damage.
NOTE: General information is given throughout the manual
that may help the operator in the operation or service of the
engine.
This symbol points out important safety instruc-
tions which if not followed could endanger your
personal safety.
BEFORE OPERATING ENGINE:
WARNING
WARNING INDICATES A HAZARD WHICH, IF NOT
AVOIDED, COULD RESULT IN DEATH OR SERIOUS IN-
JURY AND/OR PROPERTY DAMAGE.
CAUTION
CAUTION INDICATES YOU CAN BE HURT OR YOUR
EQUIPMENT DAMAGED IF THE SAFETY INSTRUC-
TIONS THAT FOLLOW THIS SIGNAL WORD ARE NOT
OBEYED.
WARNING
CALIFORNIA PROPOSITION 65 WARNING
ENGINE EXHAUST FROM THIS PRODUCT CONTAINS
CHEMICALS KNOWN TO THE STATE OF CALIFORNIA
TO CAUSE CANCER, BIRTH DEFECTS, OR OTHER RE-
PRODUCTIVE HARM.
IMPORTANT
INDICATES HELPFUL INFORMATION FOR PROPER AS-
SEMBLY, OPERATION, OR MAINTENANCE OF YOUR
EQUIPMENT.
WARNING
FAILURE TO COMPLY WITH ALL SAFETY AND OPERAT-
ING INSTRUCTIONS CAN RESULT IN LOSS OF ENGINE
CONTROL, SERIOUS PERSONAL INJURY TO YOU AND/
OR BYSTANDERS, AND RISK OF EQUIPMENT AND
PROPERTY DAMAGE.
WARNING
READ ENTIRE OPERATING AND MAINTENANCE
INSTRUCTIONS FOR THIS PRODUCT AND THE
INSTRUCTIONS FOR THE EQUIPMENT THIS ENGINE
POWERS. FAILURE TO FOLLOW INSTRUCTIONS COULD
RESULT IN SERIOUS INJURY OR DEATH. OPERATE THE
ENGINE ACCORDING TO THE SAFETY INSTRUCTIONS
OUTLINED HERE AND INSERTED THROUGHOUT THE
TEXT. ANYONE WHO USES THIS ENGINE MUST READ
THE INSTRUCTIONS AND BE FAMILIAR WITH THE
CONTROLS.
WARNING
CERTAIN COMPONENTS IN THIS PRODUCT AND
ITS RELATED ACCESSORIES CONTAIN CHEMICALS
KNOWN TO THE STATE OF CALIFORNIA TO CAUSE
CANCER, BIRTH DEFECTS, OR OTHER REPRODUCTIVE
HARM. WASH HANDS AFTER HANDLING.