Use and Care Manual
24
CS-501P
MAINTENANCE AND CARE
IMPORTANT
Time intervals shown are maximum. 
Actual use and your experience will determine 
the frequency of required maintenance. 
Your ECHO chain saw is designed to provide many 
hours of trouble free service. Regular scheduled 
maintenance will help your chain saw achieve that 
goal. If you are unsure or are not equipped with the 
necessary tools, you may want to take your unit to 
an ECHO Service Dealer for maintenance. To help 
you decide whether you want to DO-IT-YOURSELF 
or have the ECHO Dealer do it, each maintenance 
task has been graded. If the task is not listed ask 
your ECHO dealer for repairs. 
SKILL LEVELS
Level 1 = Easy to do. Most required tools come 
with unit. 
Level 2 = Moderate difficulty. Some specialized 
tools may be required. 
ECHO offers REPOWER™MaintenanceKitsand
Parts to make your maintenance job easier. Just 
below each task heading are listed the various part 
numbers required for that task. Ask your ECHO 
dealer for these parts. 
MAINTENANCE INTERVALS
Maintenance Procedure Letter Codes:
 I =  Inspect
 C  =  Clean
 R  =  Replace
Maintenance Procedure Notes:
(1)=  Low evaporative fuel tanks DO NOT require 
regular maintenance to maintain emission 
integrity. 
 *  =  All recommendations to replace are based 
on the finding of damage or wear during 
inspection. 
Component / system Maintenance procedure
Required 
Skill level
Daily or 
Before use
Every refuel
3 Months or 
90 Hours
Yearly or 
600 Hours
Air Filter Inspect / Clean / Replace 1 I / C * R *
Automatic Oiler Inspect / Adjust 1 I
Oil Filter Inspect / Clean / Replace 1 I I / C *
Fuel System Inspect / Replace 1 I (1) * I (1) *
Fuel Filter Inspect / Replace 1 I * I / R *
Fuel Cap Gasket Inspect / Replace 1 I * R *
Guide Bar and Sprocket Nose Inspect / Clean / Lubricate 1 I / C * I
Saw Chain
Inspect / Sharpen / Replace / 
Tensioning
2 I *
Sprocket Inspect / Replace 2 I *
Spark Plug Inspect / Clean / Replace 1
I / C / R *
Cooling System Inspect / Clean 2 I / C
Muffler Spark Arrestor Inspect / Clean / Replace 2
I / C / R *
Cylinder Exhaust Port Inspect / Clean / Decarbon 2 I / C
Recoil Starter Rope Inspect / Clean 1 I / C *
Screws / Nuts / Bolts Inspect / Tighten / Replace 1 I *










