Yanmar 4BY - Page 60

ENGINE
BY Service Manual
5-5
Before You Begin Servicing
A CAUTION
FLYING OBJECT HAZARD!
• ALWAYS wear eye protection when
servicing the engine and when using
compressed air or high-pressure
water. Dust, flying debris, compressed
air, pressurized water or steam may
injure your eyes.
• Failure to comply may result in minor
or moderate injury.
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A CAUTION
Be sure to secure the engine solidly to
prevent injury or damage to parts due to
the engine falling during work on the
engine.
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CAUTION
• Only use the engine oil specified.
Other engine oils may affect warranty
coverage, cause internal engine
components to seize and / or shorten
engine life.
• Prevent dirt and debris from
contaminating the engine oil. Carefully
clean the dipstick and the surrounding
area before you remove the cap.
• NEVER mix different types of engine
oil. This may adversely affect the
lubricating properties of the engine oil.
• NEVER overfill. Overfilling may result
in white exhaust smoke, engine
overspeed or internal damage.
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CAUTION
• Only use the engine coolant specified.
Other engine coolants may affect
warranty coverage, cause an internal
buildup of rust and scale and / or
shorten engine life.
• Prevent dirt and debris from
contaminating engine coolant.
Carefully clean the filler cap and the
surrounding area before you remove
the cap.
• NEVER mix different types of engine
coolants. This may adversely affect the
properties of the engine coolant.
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CAUTION
Identify all parts and their location using
an appropriate method. It is important
that all parts are returned to the same
position during the reassembly process.
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CAUTION
Keep the piston pin parts, piston
assemblies, and connecting rod
assemblies together to be returned to
the same position during the
reassembly process. Label the parts
using an appropriate method.
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CAUTION
Any part which is found defective as a
result of inspection or any part whose
measured value does not satisfy the
standard or limit must be replaced.
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