MTD 450 Serie Manual Del Operador página 14

For repairs beyond
the minor adjustments
listed here, contact
an authorized service
Problem Cause Remedy
Enaine f.,
ailsto
Start
I Throttle levernotin correctStarting i Move thrott, e everto FASTor
post on (f equ pped) STARTpost on
2, Sparkp!ugwire disconnected, 2, Connectwire tospark p!ug,
choke n ot in cHoKE position (if cHOKE
equipped): poSiti0nl
Fueltank emptyor Sta!efuel. tank with clean,freShgasolinel
&Engine not pdmed(if equipped)Prime engineas .instructed in
6 Faut ark _ 6 ceanadjuStgap 0rrepace
ysp P g: !
Blocked fuel CleanfueI
81 Engine flooded, &Wait a few minutesto Festa rt,but
do not prme:
.
2.
3.
4.
5.
Engineruns erratic
Sparkplug wireloose.
Unit runningon CHOKE(if equipped).
Blockedfuelline or stale fuel.
Ventin gas cap plugged.
Wateror dirt in fuel system.
6. Dirty air cleaner.
7. Carburetor out of adjustment.
1. Connectand tightenspark
plug wire.
2. Movechokeleverto OFF position.
3. Cleanfuel line;fill tank with clean,
fresh gasoline.
4. Clearvent.
5. Drainfuel tank. Refillwith
fresh fuel.
6. Referto enginemanual.
7. See authorizedservicedealer.
Engine overheats
1. Engineoil levellow. _ 1. Fillcrankcasewith properoil.
2. Dirty air cleaner. I 2. Referto enginemanual,
• 3. Carburetornotadjustedproperly.
Occasional skips
(hesitates) at
high speed
Unit does not
discharge
1. Sparkplug gap tooclose.
2. Carburetoridle mixtureadjustment
improperlyset.
1. Chutedeflectorclogged.
2. Foreignobject lodgedin impeller.
3. Lowengine RPM.
3. Seeauthorizedservicedealer.
1. Adjustgap to .030".
2. See authorizedservicedealer.
1. Stop engineimmediately and
disconnectsparkplug wire.Clean
flail screenand insideof discharge
opening.
2. Stop engineand disconnectspark
plug wire. Removelodgedobject.
3. Alwaysrun engineat full throttle.
Rate of discharge
1 Lowengine RPM. 1. Alwaysrun engineat fullthrottle.
slows considerably I
2. Chipperbladedul. I 2. Replacechipperbladeor seeyour
or composition of
authorzed
servce
dea er.
discharged material I I
changes ,
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