EarthQuake 9050300 User Manual

Troubleshooting & Repair

The cutting edges of the shredding hammers may eventually 

wear out requiring rotation of the hammer or replacement if 

all cutting edges have been dulled.
Triangular hammers can be rotated twice after the first edge 

dulls, then flipped over once and rotated again for a total of 

6 edges.  J-hammers can be flipped over once for a total of 

two cutting edges. 
To rotate the shredding hammers:
 1.  Turn the engine off and wait for all moving parts to stop.
 2.  Disconnect the spark plug wire and secure it away from 

the spark plug.

 3.  Detach the shredder hopper from the rotor housing 

(Figure 12).

 4.  Remove the rotor cover by removing the hardware that 

secures it to the main housing (Figure 13).

 5.  Note the assembly sequence of the hardware used to 

secure the hammers (Figure 14).  Using a 5/16” allen 

wrench remove the socket head capscrew (A) and related 

hardware.

 6.  Inspect the hammers (G, H), spacer tubes (D, E), and 

hardware.  If the spacer tube (D, E) shows signs of wear, 

replace it.  Inspect and flip, or replace the hammers (G, 

H).

 7.  Reassemble the hammers, spacers, washers, and

A.  Socket Hd. Capscrew
B.  Lockwasher, 3/8
C.  Washer, 7/8
D.  Spacer, Long

E.  Spacer, Short
F.  Washer, 3/8 (9070300,  
 

9010400, 9010140 only)

G. J-Hammer
H.  Triangular Hammer