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MTD 12A-998Q795 Operator's Manual page 14

21" self-propelled mower

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Shooting
For repairs beyond
the mbo
ments fisted here,
contact an authorized
service dealer.
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Problem
Cause
Remedy
Enginefails to start I
1. Bladecontrol disengaged•
1. Engageblade control•
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2.
wire disconnected.
2. Connectwireto spark plug.
Spark plug
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3, Fueltank
or stale fue
3. Fil tank with clean fresh gasoline•
empty
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4. Enginenot primed•
4. Primeengineas instructedin
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"OperatingYourLawnMower".
5
ault s ark lu
5. Cean adjust gap orrepace.
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.F
yp
pg.
H
R
6. Cleanfuel inc.
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6. BIockedfue line.
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7 En ne f coded
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7. Wait a few minutesto restart,but
J-
g'
"
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do notprime_
Engineruns erratic
1. Sparkplug wireloose.
1. Connectand tightenspark
plug wire.
2. Blockedfuelline or stale fuel.
2. Cleanfuel line;fill tank with clean,
fresh gasoline.
3. Ventin gas cap plugged.
3. Clearvent.
4. Wateror dirt in fuel system.
4. Drainfuel tank. Refillwith
fresh fuel.
5. Dirty air cleaner.
5. Referto enginemanual.
6. Carburetor out of adjustment.
6. Referto enginemanual.
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Engine overheats
1. Engineoil levellow.
1. Fillcrankcasewth properoil.
2. Air f ow restricted.
2. Removeblowerhousing
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and clean.
3. Carburetornotadjustedproperly,
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3. Referto enginemanual.
Occasional skips
1. Sparkplug gap tooclose.
1. Adjustgap to .030".
(hesitates) at
2. Carburetoridle mixtureadjustment
2. Referto enginemanual.
high speed
improperlyset.
des poor y
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1. Sparkplugfouled faultyor gap
1. Resetgap to .030' or replace
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toowide.
spark plug.
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2. Carburetor improperlyadjusted.
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2. Referto enginemanual.
3. Dirty air cleaner.
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3. Referto enginemanual.
Excessive
1. Cuttingbladelooseor unbalanced.
1. Tightenblade and adapter.
Vibration
Balanceblade.
2. Bentcuttingblade.
2. See an authorizedservicedealer.
not
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1. Wetgrass.
1. Do not mowwhengrass is wet
m
Mower
will
much grass (If
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wet unt aterto cut.
Equ
pped)
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2 Excessivel hi h rass
2 Mow onceat a h gh cutt ng he ght
y gg
.
then mowagain at desiredheight
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or makea narrowercuttingpath.
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3 Du bade
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"
3. Sharpenor replaceblade.
Unevencut
1. Wheelsnot positionedcorrectly.
1. Placeall fourwheelsin same
heightposition.
2. Dull blade.
2. Sharpenor replaceblade.
Mower w not
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1. Belt notinstalledproperly.
1 Checkbelt for properpulleyinstal-
f
r
aton and movement
se pope
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.
.
"
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2 Stop eng ne,d sconnectspark p uc
2. Debriscloggingdrive operation.
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w re and c ean out debrs
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3. Damagedor worn belt,
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3. nspectand repace bet.
14

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