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MTD 25B-520A700 - Page 13

MTD 25B-520A700
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TroubleshootingGuide
Problem
PossibleCause(s)
CorrectiveAction
Engine fails to start
Dirty aircleaner
Engineneedsto beprimed
Fueltankempty
Stalefuelin gasolinetank
Sparkplugwiredisconnected.
Sparkplugfouled
Engineflooded
Refertothe EngineManualpackedwithyourunit.
Pushprimerbulbtwo or threetimes.
Filltank withclean,fresh gasoline.
Draingasolineand refilltankwithclean,freshgasoline.
Connectthespark plugwireto thespark plug.
Clean,adjust gapor replacespark plug.
Refertothe EngineManualpackedwithyourunit.
Engine runs erratic
Sparkplugwire loose
Stalefuelin gasolinetank
Ventin gascapplugged
Wateror dirt infuel system
Dirty aircleaner
Carburetoroutof adjustment
Connectand tightensparkplugwire.
Draingasoline& refilltankwith clean,freshgasoline.
Clearventof anydebris.
Drainfueltank. Refillwith fresh fuel.
Referto the EngineManualpackedwith yourunit.
Referto the EngineManualpackedwith yourunit.
Engine Overheats Engineoil levellow Fillcrankcasewith properoil.
Airflowrestricted Cleantheareaaroundthe engine'scoolingfins.
Dirty airfilter Replacetheengine'sairfilter.
Carburetornotadjustedproperly Referto the EngineManualpackedwith yourunit.
ExcessiveVibration Edgerbladebent ordamaged Replaceedgerblade.
Bladespindlebentor damaged Contactan authorizedMTDservicedealer.
DrivebeltSlips Beltwornor stretched Replacedrivebelt.
13
For parts and/or
accessories please
call 1-330-220.468&
3r 1-800-800-7310
www.mtdproducts.com

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