Yamaha EH64 Owner's Manual page 23

Periodic Maintenance Schedule table
Maintenance Items
Clean engine and check bolts and nuts
Check for leakage from hoses and fitting
Check and refill engine oil
Change engine oil (*1)
Replace engine oil filter (*1)
Check battery electrolyte fluid level
Clean spark plug
Clean air cleaner
Spark arrester (optional part)
Replace air cleaner element
Clean fuel strainer
Clean and adjust spark plug and electrodes
Replace spark plug
Remove carbon from cylinder head
Clean carburetor
Clean engine base (oil pan)
Check and adjust valve clearance
Replace fuel lines
Replace oil lines
Overhaul engine (*2)
*1 : Initial oil change and oil filter replacement should be performed after 20 hours of operation.
Thereafter change oil every hundred (100) hours and replace oil filter 200 hours. Before
changing oil, check for a suitable way to dispose of old oil. Do not pour it down into sewage
drains, onto garden soil or into open streams. Your local zoning or environmental regulations
will give you more detailed instructions on proper disposal.
*2 : As to the procedures, please refer to the Service Manual or consult your nearest YAMAHA
service dealer.
*3 : More frequent oil changing, oil filter replacement and air cleaner service on replacement may
be necessary depending on operating conditions.
This would include dusty environment, high ambient temperature, heavy engine loading.
Every 8
hours
(Daily)
6 (Daily)
6 (Daily)
6
(Refill daily to upper level)
6
(Initial 20 hours)
6
(Initial 20 hours)
– 16 –
Every Every
50 200
hours hours
6
(Every 100 hours)
6
6
6
6
6
(Every 100 hours)
6
6
6
Every Every
500 1000
hours hours
6
6
6
6
6
6
(Every 2 years)
6
(Every 2 years)
6