Echo CH6614 Owners Manual v.1 - Manual (Page 18)

6 INCH CHIPPER 16
HYDRAULIC FEED
4.3 hYdraulic feed mainTenance
Check the reservoir daily for proper fluid level, the presence
of water (noted by a cloudy to milky appearance, or
free water in bottom of reservoir), and rancid fluid odor
(excessive heat).
The hydrostatic pump normally does not require regular
fluid changes. The system filter should be changed at
either 250 hour or annual intervals, whichever comes
first. The fluid and filter should be changed and system
cleaned if the fluid becomes contaminated with foreign
matter (water, dirt, grease, etc.) or if the fluid has been
subjected to temperature levels greater than the maximum
recommended.
There is a greaseable bearing on each side of the main
jack shaft on the main hydraulic feed housing. Grease
periodically.