Echo SRM-225U Serial S79012004906 - S79012999999 - Manual (Page 15)

SRM-225U ASSEMBLY
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© 3/2014 ECHO Inc.
a. Align locking hole in upper plate with notch in edge of gear housing and insert head locking tool (G).
b. Remove line head (J) by turning it clockwise until head is completely off of shaft.
c. Remove locking tool (G).
d. Remove three screws holding shield plate and plastic shield (H) to gear housing.
e. Retain line head, upper fixing plate, shield plate, and plastic shield for conversion back to nylon line
head operation.
2. Align hole in upper plate (A) with notch in gear housing (B),
and insert locking tool to prevent splined shaft from turning.
Arrow on gear housing flange points to notch location.
3. Remove split pin (C), L.H. blade nut (D), lower plate (E), and
upper plate (A) from PTO shaft (F). Turn blade nut clockwise
to remove.
4. Remove locking tool (G).
5. Loosely attach bracket (K) to shield (L) and attach shield to
bottom of gear housing (B) with hardware provided.
6. Tighten all shield hardware.
Install Blade
1. Install upper plate (A) on splined PTO shaft, pilot side down.
Blade installation requires Upper Plate (A) with 20 mm pilot.
2. Install Blade (M) 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 (E), and 10 mm L.H.
nut (D). Turn nut counter-clockwise on PTO shaft to tighten.
3. Align hole in upper plate with notch in gear housing, and
insert Locking Tool (G) to prevent splined shaft from turning.
Arrow on gear housing points to notch. Tighten 10 mm nut
securely.
Parts Required: Upper Plate w/ 20 mm pilot, Lower Plate, 10
mm Nut w/L.H. threads, 2 x 25 mm Cotter Pin,
Blade.
A
B
C D E
F
K
L
B
A
G
M
E D
C