THE IMPORTANCE OF MAINTENANCE
SAFETY PRECAUTIONS
We recommend you take your YARDMAX engine to a YARDMAX
authorized service center to have all maintenance and service of
the engine and its parts.
Unintentional start up can create entanglement, laceration, or
amputation.
Before performing maintenance or service on your YARDMAX
engine take the following steps to ensure a safe work
environment
To help you properly care for your engine, the following pages
include a maintenance schedule, routine inspection procedures,
and simple maintenance procedures using basic hand tools. Other
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best handled by professionals and are normally performed by a
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The maintenance schedule applies to normal operating conditions.
If you operate your engine under unusual conditions, such as
sustained high-load or high-temperature operation, or use in
unusually wet or dusty conditions, consult your servicing dealer
for recommendations applicable to your individual needs and use.
MAINTENANCE
Warning!
Improperly maintaining this engine, or failure to
correct a problem before operation, can cause a
malfunction in which you can be seriously hurt or
killed. Always follow the inspection and maintenance
recommendations and schedules in this owner’s
manual.
Warning!
The fuel tank must be emptied, if mounted on the
engine, prior to performing maintenance. Tipping of
the engine may cause the fuel to leak out causing a
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Warning!
Always unplug the spark plug before performing
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Make sure all drive controls are disengaged.
Move the stop switch to off or remove the ignition key if
equipped.
Unplug the spark plug wire.
If the engine is installed on the machine block the wheels to
prevent movement or tipping.
To ensure safe operation after maintenance is performed
follow these guidelines:
Use only the correct tools.
Do not tamper with the governor spring, links, or other parts
to increase speed.
Only use YARDMAX approved replacement parts.
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object.
When testing for spark:
Use an approved spark plug tester.
Never check for spark with the plug removed.
Make sure the engine is off before you begin any maintenance
or repairs. This will eliminate several potential hazards:
Carbon monoxide poisoning from engine exhaust.
Be sure there is adequate ventilation whenever you operate
the engine.
Burns from hot parts.
Let the engine and exhaust system cool before touching.
Injury from moving parts.
Do not run the engine unless instructed to do so.
Read the instructions before you begin, and make sure you
have the tools and skills required.
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away from all fuel-related parts.
Remember that your servicing dealer knows your engine best and
is fully equipped to maintain and repair it.
To ensure the best quality and reliability, use only new, genuine
parts or their equivalents for repair and replacement.
11
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Maintenance
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