Echo CS-420ES Service Manual

63
MAINTENANCE GUIDE
CS-370ES
CS-420ES
11-2 Troubleshooting Guide
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
TROUBLE
Engine does not crank.
Engine does not start.
Fuel leaks.
Idling is not stable.
Acceleration is poor.
Engine stalls at high speed.
Engine lacks power.
Engine overheats.
Engine misfires.
Engine/others are extremely noisy.
Fuel consumption is excessive.
Vibration is excessive.
Engine does not stop.
Oiler does not function.
Saw chain does not cut well.
INSPECTING
Starter system
Starter drum/rope
Ignition system
Sparks
Spark plug
Spark plug cap / coil
Ignition switch
Ignition coil
Pole shoe air gaps
Flywheel
2-2
3-2
3-3
3-7
3-4
3-6, 3-8
3-9
3-10
(Continued)
15
Inspecting first.
14 13 12 11 10 09 08 07 06 05 04 03 02 01
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
Flywheel key 3-10
REFERENCES
Rewind spring 2-3
2-4Starter pawl/spring

Echo CS-420ES Specifications

General

Saw Chain Gauge	0.050 inches
Fuel Capacity	0.41 liters
Weight	4.6 kg
Saw Chain Pitch	3/8 inches
Bar Length	16 inches