Trouble shooting chart for electric start models – Bolens 137-465A User Manual
Page 18
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TROUBLE SHOOTING CHART FOR ELECTRIC START MODELS
TROUBLE
Engine fails to start.
LOOK FOR
Safety System
REMEDY
Blocked fuel line or
empty gas tank.
Defective
spark
plug.
Throttle setting.
Loose connections
A.
Check for a blown fuse in the wire leading from the
positive terminal of the battery.
B.
Before checking the safety system further, be sure the
clutch control and the blade control are disengaged; only
the
starting
system
is
being
checked.
Therefore
remove
the spark piug lead and ground it to prevent the engine
from starting.
C.
Attach a wire (minimum 18 gauge) to the positive ter
minal
of
the
battery
and
touch
the
other
end
to
the
small terminal (coil primary) of the solenoid. If the en
gine cranks, the problem is in the safety system.
D.
Check
for
continuity from
the battery to
the solenoid.
NOTE; The positive terminal of the battery should have
a large cable (#8 guage) and a small wire (#18 gauge)
attached to it.
E. Check all wires and cable for tightness.
F.
Use a #8 gauge wire and jump between the two large
terminals of the solenoid. If the unit starts, replace the
solenoid.
G.
if the unit fails to start after following the above pro
cedure the problem is probably in the starting motor of
the engine.
Clean fuel line; check fuel supply. Also check fuel shut-off
valve.
Spark plug lead wire disconnected.
Faulty
spark
plug—spark
should
jump
gap
between
control
electrode
and
side
electrode.
If
spark
does
not
jump,
re
place spark plug.
NOTE: Use insulated pliers to hold the spark plug wire.
Throttle control lever not in the starting position.
Spark plug wire loose.
Hard starting or loss of
power.
Dirty air cleaner.
Remove
air
cleaner
and
clean
as
outlined
in
Engine
Manual.
Carburetor
improp
erly adjusted.
Review paragraph Carburetor Adjustment.
Excessive vibration.
Bent
or
damaged
blade spindle.
Stop engine immediately; tighten all bolts and make all nec
essary repairs. If vibration continues, have the unit serviced
by a competent repairman.
Unit
fails
to
discharge
grass.
Discharge
chute
clogged.
Clean discharge chute and inside of deck.
Foreign
object
lodged in deck.
Remove object from deck. See CAUTION following step 1 in
paragraph Operation.
Engine overheats.
Obstructions
in
air
passages.
Remove any obstruction from air passages in shroud.
Grass and dirt in engine shroud.
Clean cooling fins.
Oil level.
Fill crankcase to proper oil level.
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