Echo SRM - 280U ユーザーズマニュアル

Parts Required:  Upper Plate w/ 20 mm pilot, Lower Plate, 10 mm Nut 

w/L.H. threads, 2 x 25 mm Cotter Pin, Blade.

1.  Install upper plate (D) on splined PTO shaft, pilot side down.  

Blade installation requires Upper Plate (D) with 20 mm pilot.

2.  Install Blade (K) on upper plate pilot. Blades must be installed so 

that rotation arrow on blade matches rotation of unit:  teeth toward 

direction of rotation (See debris shield decal). Secure blade with 

Lower Plate (H), and 10 mm L.H. nut (G). Turn nut counter-clock-

wise on PTO shaft to tighten. 

3.  Align hole in upper plate with notch in gear housing, and insert 

Locking Tool (L) to prevent splined shaft from turning.  Arrow on 

gear housing points to notch.  Tighten 10 mm nut securely.

4.  Insert Cotter Pin (F) in hole in PTO shaft, and bend pin legs around 

shaft counterclockwise to retain 10 mm nut.

Never reuse a cotter pin - install a new cotter pin each time a blade 

is installed or replaced.

 

5.  Remove locking tool.  

Parts Required:  U-Handle, Clamp w/screws, 8 mm  x 55 mm hex 

bolt, 8 mm flat washer

1.  Install upper U-Handle and bracket on lower bracket with one 

(1) 8mm x 55mm bolt (A) and (1) large circular washer.  Do not 

tighten bolt securely until final adjustments are completed.

2.  Loosen upper (2) U-handle clamp screws (B), and position U-

handle as shown.

3.  Lightly tighten 8mm bolt (A) and clamp screws (B) to hold U-

handle in position until final adjustments are completed.

4.  Route throttle linkage and ignition lead assembly along shaft and 

clip as shown.