Echo PB-251 Service Manual

IGNITION SYSTEM
PB-251
14
Not
OK
Not
OK
Not
OK
OK
OK
OK
Spark plug
Spark
plug cap/
coil
Ignition
switch
Clean /
Regap /
Replace.
Replace.
Start
OK
OK
S.T.
Not
OK
S.T.
Not
OK
Not
OK
S.T.
OK
S.T.
Not
OK
Pole
shoe air
gaps
Replace.
Not
OK
OK
OK
Not
OK
S.T.
OK
OK
Clean / Regap / Replace
spark plug.
Replace
ignition
coil.
Leads
connections
Not
OK
OK
OK
Not
OK
S.T.
Repair /
Replace.
Coil
resist-
ances
Not
OK
Remedy
Check
Not
OK
Flywheel
key
OK
R.T.
End
Not
OK
Flywheel
magnet
Replace.
Not
OK
R.T.
Not
OK
OK
OK
Replace ignition coil and / or check other
systems.
Replace flywheel.
(Check the key at the same
time. Go to B if OK.)
OK
OK
Adjust pole shoe air gaps.
(Check flywheel magnet
at the same time. Go to
A if OK.)
S.T.
Not
OK
A
B
S.T.: Spark test.
R.T.: Running test including actual cutting.
OK
3-1 Troubleshooting guide

Echo PB-251 Specifications

General

Engine Displacement	25.4 cc
Air Speed	170 mph
Noise Level	70 dB(A)
Type	Handheld
Power Source	Gasoline
Fuel Capacity	16.9 fl oz