Echo 99944200465 Operator's Manual page 18

MAINTENANCE
6. Remove plug (G) and check level of grease. Grease should
fill gear case to bottom of grease plug hole.
7. Add grease if necessary using squeeze-type tube. Do not
use high pressure grease gun. DO NOT over-fill.
8. Install inner blade adapter (B) onto PTO shaft (C).
9. Install and center new blade (F) onto inner fixing plate (B),
with longest side toward shield.
10. Install outer fixing plate (E) and nut (D). Tighten nut (D)
firmly, ounterclockwise (CCW),
Note: Never reuse old split pin.
11. Install new split pin (A) to secure nut.
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