Yamaha ef2000is - Manual (Page 30)

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*1····· Initial replacement of the engine oil is after one month or 20 hours of operation.
*2····· The air filter element needs to be cleaned more frequently when using in unusually wet or dusty areas.
★····· Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.
Item Routine
Pre-
operation
check
Every
6 months
or 100 Hr
12 months
or 300 Hr
Crankcase breather
• Check breather hose for cracks or
hose
damage. 1
• Replace if necessary.
Cylinder head
• Decarbonize cylinder head.
★
• More frequently if necessary.
Valve clearance • Check and adjust when engine is cold.
★
Fittings / fasteners
• Check all fittings and fasteners.
★
• Correct if necessary.
The point where abnormality was recognized by use. 1
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