MTD 546 Series Operator's Manual page 12

21" hi-wheel mower
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Shooting
For repairsbeyond
the minoradjustments
listedhere; contact
an authorized service
dealer'
NOTE: Specficationsaid
subjectto changewith0ut
notificationo[ ob!igation,
Imagesrnayn0treflect
yourexact modeland are
iii I i_I _ii _iii_iii_!i_i i_i _ _i i_
_ i
Problem
Cause
Remedy
Engine fails to start
ii
B!adeControi d isengaged,
ii
EngagebladeC0ntr0
2
Spa[kplug Wiredisconnected.
2 connect wireto spark plugl
3: Fuel tank emptYor staid fuel
&Fill
tank Withcleanl fresh gasoiine:
4. Enginenot primed(if equippedwith
4.
Primeengine as instr,u, cted in operat_
primer)i
I
ingYour Lawn Mower:
5. FaultySparkp ugl
15
cleanl adjustgaP,0rreP!ace.
6, clean fuel linel
7: Enginefl0oded.
Wait a few minutest0 restart bUtdo
I
& Fue! yalve (if equipped)CloSed.
I
Open fuel va!v e, see enginemanna!.
9. Enginenot Choked(if equippedw/choke).
& Choke enginel Seeengine manual.
Engine runs erratic
1. Sparkplug wire loose.
1. Connect andtighten sparkplug wire.
2. Blockedfuel lineor stale fuel.
2. Clean fuel line; fill tank withclean,
3. Ventingas cap plugged.
4. Wateror dirt infuel system.
5. Dirtyair cleaner.
6. Carburetorout of adjustment.
fresh gasoline.
3. Clear vent.
4. Drainfuel tank. Refillwithfresh fuel.
5. Referto engine manual.
6. Referto engine manual.
Engine overheats
1. Engineoil levellow,
1. Fillcrankcasewith proper oil.
2. Air flow restricted.
2. Clean accumulateddebrisfrom engine.
3. Carburetornot adjustedproperly.
3. Referto engine manual.
Occasional skips
1. Sparkplug gap too close.
1. Adjustgap to .030-inch.
(hesitates) at high speed
2. Carburetoridlemixtureadjustment
2. Referto engine manual.
improperlyset.
I
I
Idles poorly
1. Sparkplug fouled, faulty or gaptoo wide.
1. Resetgapto .030-inchor replace
spark plug.
2. Carburetorimproperlyadjusted.
2. Referto engine manual.
3. Dirtyair cleaner.
3. Referto engine manual.
Excessive Vibration
1. Cuttingbladeloose or unbalanced.
1. Tighten bladeandadapter.Balance
blade.
2. Bentcutting blade.
2. See an authorizedservicedealer.
Mower wil not mulch grass
1. Wetgrass.
1 Donot mowwhen grass is wet wait
untillater to cut.
2 Excessivelyhigh grass.
2. Mowonce at a high cutting height,
then mowagainat desiredheight or
makea narrowercurt ng path.
,
3. Dullblade.
, 3. Sharpenor replaceblade,
Uneven cut
1. Wheelsnot positionedcorrectly.
1. Placeall four wheelsin same
heightposition.
2. Dull blade.
_ 2. Shar en or re! laceblade.
12

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540 series

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