Use and Care Manual
4
CS-501P
SYMBOL FORM
Locate this safety decal on your unit. The complete 
unit illustration found in the “NOMENCLATURE OF 
PARTS” section will help you locate them. 
Make sure the decal is legible and that you 
understand and follow the instructions on it. If a 
decal cannot be read, a new one can be ordered 
from your ECHO dealer. 
Symbol form/shape Symbol description/application Symbol form/shape Symbol description/application
WARNING!! 
Read and follow all safety 
precaution in the instruction 
manual. Failure to follow 
instructions could result in 
serious personal injury.
Oil and gasoline mixture
Wear eyes, ears and head 
protection
Chain oil fill
Tip contact may cause the 
guide bar to move suddenly 
upward and backward, which 
may cause serious injury
Chain oiler adjustment
Contact of the guide bar tip 
with any object should be 
avoided
Decompression device
Both of the operator’s hands 
must be used to operate the 
chain saw
L
Carburetor adjustment 
- Low speed mixture
Chain brake operation
H
Carburetor adjustment 
- High speed mixture
Emergency stop
T
Carburetor adjustment 
- Idle speed
Choke control “Cold Start” 
position (choke closed)
DECALS
Part Number X505-006660 Part Number X524-003551
REPLACEMENT BAR AND CHAIN
GUIDE BAR*  CHAIN*
  PART NO.  PART NO.
16”  16F0LD3366  20LPX66CQ / 20BPX66CQ
18”  18F0LD3372  20LPX72CQ / 20BPX72CQ
20”  20F0LD3378  20LPX78CQ / 20BPX78CQ
*Or equivalent
Note: 
There may be other replacement 
components for achieving kickback 
protection. For details, please refer 
to the chain and bar combination 
sheet shown in the instruction manual. 










