Yamaha EF3000iS Owner's Manual page 33

Item
Crankcase breather
hose
Cylinder head
Valve clearance
Fittings / fasteners
The point where abnormality was recognized by use.
*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.
Routine
• Check breather hose for cracks or
damage.
• Replace if necessary.
• Decarbonize cylinder head.
• More frequently if necessary.
• Check and adjust when engine is cold.
• Check all fittings and fasteners.
• Correct if necessary.
– 27 –
Every
Pre-
operation
6 months
check
or 100 Hr
1
12 months
or 300 Hr
1
★
★
★