MTD 330 - Troubleshooting Chart

Trouble Shooting Chart
Problem
Cause
Remedy
1 Engine fails to start
A Blade cont ol handle
disengaged
A Engage blade control handle.
B Check fuel tank for gas
B Fill tank if empty.
C Spark plug lead wire discon¬
nected.
C Connect iead wire.
D Throttle control lever not in
D Move throttle lever to start
the starting position
position.
E Faulty spaik plug
E Spark should jump gap be¬
tween control electrode and
side electrode. If spark does
not jump, replace the spark
plug.
F Carburetor improperly ad-
F Remove spark plug, dry the
justed, engine flooded
plug, crank engine with plug
removed, and throttle in off po¬
sition. Replace spark plug and
lead wire and resume starting
procedures.
G Old stale gasoline
G Drain and refill with fresh
gasoline.
H Engine brake engaged
H Follow starting procedure.
2 Hard starting or
A Spark plug wire loose
A Connect and tighten spark
loss of power
plug wire.
B Carburetor improperly
B Adjust carburetor. See separate
adjusted
engine manual.
C Dirty air cl aaner C Clean air cleaner as described
in separate engine manual.
3 Operation erratic
A Dirt in gas tank A Remove the dirt and fill tank
with fresh gas.
B Dirty air cl aaner B Clean air cleaner as described
in separate engine manual.
C Water in fuel supply C Drain contaminated fuel and
fill tank with fresh gas.
D Vent in ga; cap plugged D Clear vent or replace gas cap.
E Carburetor improperly E Adjust carburetor. See
adjusted separate engine manual.
4 Occasional skip
A Carburetor idle speed too
A Adjust carburetor. See
(hesitates) at high
slow
separate engine manual.
speed
B Spark plug gap too close
B Adjust to .030".
C Carburetor idle mixture ad-
C Adjust carburetor. See
justment improperly set
separate engine manual.
5 Idles poorly
A Spark plug fouled, faulty, or
A Reset gap to .030" or replace
gap too wide
spark plug.
B Carburetor improperly
B Adjust carburetor. See
adjusted
separate engine manual.
C Dirty air cleaner
C Clean air cleaner as described
in separate engine manual.
6 Engine overheats
A Carburetor not adjusted
A Adjust carburetor. See
properly
separate engine manual.
B Air flow reiitricted
B Remove blower housing and
clean as described in separate
engine hianual.
C Engine oil evel low
C Fill crankcase with the proper
oil.
7 Excessive vibration
A Cutting blade loose or
A Tighten blade and adapter.
unbalanced
Balance blade.
B Bent cutting blade
B Replace blade.
Note: For repairs beyond the minor adjustrr ents listed above, contact your local authorized service dealer.
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