Echo BCLS-510ES Operator's Manual page 36

Maintenance and care
Lubricating drive shaft
1. Drive shaft
Angle transmission
1. Angle transmission
Checking the blade
2. Plug (Bolt)
Inspect the drive shaft every 100 hours of use and replenish
grease if it is insufficient.
NOTE
Use good quality lithium multi grease.
Remove plug from angle transmission.
Add grease, if necessary, using low pressure pump.
NOTE
Use good quality lithium multi grease.
Do not overfill housing.
Reinstall plug.
Use only blade designated for this model by the manufacturer.
When a crack is noticed on the blade, do not use it but replace
with a new one.
Ensure that the blade is correctly fitted in accordance with the
instructions.
When the cutting blade becomes dull due to wear reverse it for
further use.
When chip or bend occurs on the blade, vibration will increase.
Replace with new one.
When filing the blade file 3 cutting edges evenly using a flat file
as shown in the illustration.
Otherwise, the balance will be lost and vibration will increase.
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