MTD 139 cc OHV Operator'S Manual Download Page 10

10

Fuel Filter Service

The fuel filter cannot be cleaned and must be replaced 
once a year or every 100 operating hours; more often if 
run with old gasoline.
1.  Remove all fuel from tank by running engine until it 

stops from lack of fuel.

2.  Remove c-clamp from fuel line and remove fuel line 

from tank outlet. See Fig. 4-5.

3.  Pull out old fuel filter from tank outlet. Replace when 

dirty or damaged.

4.  Grasp new fuel filter from shouldered end and insert 

it completely to the shoulder into the tank outlet. See 
Fig. 4-5 inset.

5.  Replace fuel line and c-clamp.

4

Maintaining 

Your

Engine

WARNING

Accumulation of 
debris around muffler 
could cause a fire. 
Inspect and clean 
before every use.

IMPORTANT

 Do not spray engine 
with water to clean 
because water could 
contaminate fuel. 
Using a garden hose 
or pressure washing 
equipment can also 
force water into the 
air cleaner or muffler 
opening. Water in the 
air cleaner will soak 
the paper element, 
and water that passes 
through the element 
or muffler can enter 
the cylinder, causing 
damage.

Storage

Engines stored over 30 days need to be drained of fuel 
to prevent deterioration and gum from forming in fuel 
system or on essential carburetor parts. If the gasoline in 
your engine deteriorates during storage, you may need to 
have the carburetor, and other fuel system components, 
serviced or replaced.
1.  Remove all fuel from tank by running engine until it 

stops from lack of fuel.

2.  Change oil. See Oil Change on page 7.
3.  Remove spark plug and pour about 15 ml of engine oil 

into cylinder. Replace spark plug and crank slowly to 
distribute oil.

4.  Clean grass and debris from around engine, under 

finger guard, and under, around and behind muffler. 
Touch up any damaged paint, and coat other areas 
that may rust with a light film of oil.

5.  Store in a clean,dry and well ventilated area away 

from any appliance that operates with a flame or pilot 
light, such as a furnace, water heater, or clothes dryer. 
Also avoid any area with a spark producing electric 
motor, or where power tools are operated.

6.  If possible, also avoid storage areas with high humid-

ity, because that promotes rust and corrosion.

7.  Keep the engine level in storage. Tilting can cause 

fuel or oil leakage.

Removing From Storage

1.  Check your engine as described in the Pre-Operation 

Check section of this manual on page 5.

2.  If the fuel was drained during storage preparation, fill 

the tank with fresh gasoline. If you keep a container 
of gasoline for refueling, make certain it contains only 
fresh fuel. Gasoline oxidizes and deteriorates over 
time, causing hard starting.

3.  If the cylinder was coated with oil during storage 

preparation, the engine will smoke briefly at startup. 
This is normal.

Figure 4-5

Clean Engine

If the engine has been running, allow it to cool for at least 
half an hour before cleaning. Periodically remove grass 
and dirt build-up from engine. Clean finger guard and 
around muffler. Clean with a brush or compressed air.

IMPORTANT

: Do not spray engine with water to clean 

because water could contaminate fuel. Using a garden 
hose or pressure washing equipment can also force 
water into the air cleaner or muffler opening. Water in 
the air cleaner will soak the paper element, and water 
that passes through the element or muffler can enter the 
cylinder, causing damage.

WARNING: Accumulation of debris 
around muffler could cause a fire. 
Inspect and clean before every use.

Summary of Contents for 139 cc OHV

Page 1: ...g READ SAFETY RULES AND INSTRUCTIONS CAREFULLY BEFORE OPERATION IMPORTANT PRINTED IN U S A MTD Products Ltd P O Box 1386 KITCHENER ONTARIO N2G 4J1 139cc and 173cc Vertical Shaft OHV Engines for Walk B...

Page 2: ...ge alerts you to potential hazards that could hurt you or others WARNING Indicates a strong possibility of severe personal injury or death if instructions are not followed Each safety message is prece...

Page 3: ...ally return to the disengaged position when released 18 Never operate the mower in wet grass Always be sure of your footing A slip and fall can cause serious personal injury If you feel you are losing...

Page 4: ...odorless and deadly gas 2 Before cleaning repairing or inspecting make certain the blade and all moving parts have stopped Disconnect the spark plug wire and ground against the engine to prevent unint...

Page 5: ...d shorten the engine s service life Check Oil Level IMPORTANT Be sure to check the engine on a level surface with the engine stopped 1 Remove the oil filler cap and wipe the dipstick clean See Figure...

Page 6: ...y before starting the engine Avoid repeated or prolonged contact with skin or breathing of vapor Check Fuel Level 1 Clean around fuel fill before removing cap to fuel 2 Fill tank to approximately 2 cm...

Page 7: ...t then pull rapidly to overcome compression prevent kickback and start engine Repeat if necessary See Figure 3 5 Do not allow the starter grip to snap back against the engine Return it gently to preve...

Page 8: ...More frequent service is required when operating in adverse conditions Maintenance Schedule Service more frequently when used in dusty areas Every season or 25 hours if operating under heavy load or...

Page 9: ...park plug removed To ensure proper engine operation the spark plug must be properly gapped and free of deposits 1 Remove the spark plug boot and use a spark plug wrench to remove the plug See Figure 4...

Page 10: ...ass and debris from around engine under finger guard and under around and behind muffler Touch up any damaged paint and coat other areas that may rust with a light film of oil 5 Store in a clean dry a...

Page 11: ...11 NOTES For parts and or accessories refer to customer support on page 2 Adressez vous au Service apr s vente la page 2 pour ce qui concerne les pi ces et ou accessoires...

Page 12: ...12 2P70M0A 173cc Engine Moteur Models with electric start Mod les avec d marraur lectrique 29 26 28 14 17 10 11 18 20 15 13 21 30 9 3 8 7 1 2 19 6 5 4 12 27 31 32 22 23 16 25 24...

Page 13: ...carburant 20 951 10300 Fuel Cap Assembly Bouchon d essence 21 951 10299 Recoil Starter Assembly D marreur lanceur 22 951 10298 Air Cleaner Kit Filtre air 23 951 10297 Air Cleaner Thumb Screw Vis de s...

Page 14: ...14 1P70MC 173cc Engine Moteur Models without electric start Mod les sans d marraur lectrique 14 29 31 24 20 30 19 18 29 15 13 11 10 12 27 22 23 16 6 5 4 21 3 2 9 8 7 1 25 28 17 26...

Page 15: ...358 Fuel Filter Filtre carburant 20 951 10440 Fuel Cap Assembly Bouchon d essence 21 951 10299 Recoil Starter Assembly D marreur lanceur 22 951 10298 Air Cleaner Kit Filtre air 23 951 10297 Air Cleane...

Page 16: ...gines This section applies to 1995 and later small off road engines The warranty period begins on the date the engine or equipment is delivered to an ultimate purchaser a General Emissions Warranty Co...

Page 17: ...to the owner Such use will not reduce the warranty obligations of MTD 10 Add on or modified parts that are not exempted by the Air Resources Board may not be used The use of any non exempted add on or...

Page 18: ...18 NOTES For parts and or accessories refer to customer support on page 2 Adressez vous au Service apr s vente la page 2 pour ce qui concerne les pi ces et ou accessoires...

Page 19: ...19 NOTES For parts and or accessories refer to customer support on page 2 Adressez vous au Service apr s vente la page 2 pour ce qui concerne les pi ces et ou accessoires...

Page 20: ...e non exempt e sera suffisant pour rejeter une demande d application de la garantie en vertu de cet article Le fabricant du moteur ne sera pas tenu en vertu de cet article de garantir les pi ces garan...

Page 21: ...LA GARANTIE DES PETITS MOTEURS HORS ROUTE FABRIQU S EN 1995 ET ULT RIEUREMENT Cette section concerne les petits moteurs hors route fabriqu s en 1995 et ult rieurement La p riode de garantie commence...

Page 22: ...11 NOTES For parts and or accessories refer to customer support on page 2 Adressez vous au Service apr s vente la page 2 pour ce qui concerne les pi ces et ou accessoires...

Page 23: ...iner l essence L emploi d un tuyau d arrosage ou d un quipement de lavage sous pression peut aussi forcer l eau dans le filtre air ou dans l ouverture du silen cieux la faire p n trer dans le cylindre...

Page 24: ...cher l air com pl tement avant de l utiliser nouveau Ne huilez pas la cartouche en mousse Entretien de la bougie AVERTISSEMENT Ne v rifiez pas le fonctionnement de la bou gie si celle ci est d branch...

Page 25: ...ons difficiles Calendrier des op rations d entretien effectuer plus souvent dans des conditions de travail poussi reuses Chaque saison d utilisation ou toutes les 25 heures d utilisation dans des cond...

Page 26: ...sistance puis tirez plus rapidement pour surmonter la compression emp ch er le recul et faire d marrer le moteur R p tez au besoin Voir la Figure 3 4 IMPORTANT Ne laissez pas la poign e du d marreur f...

Page 27: ...sez le r servoir jusqu environ 2 cm en des sous de la base du goulot pour permettre l expansion du carburant Faites attention de ne pas d border IMPORTANT Laissez le moteur refroidir pendant au moins...

Page 28: ...ot de remplis sage de l huile sans la visser 3 Si le niveau d huile est bas ajoutez lentement de l huile jusqu la limite sup rieure sur la jauge Voir la Figure 3 3 4 Vissez la jauge huile fond avant d...

Page 29: ...reux 2 Avant de nettoyer de r parer ou d examiner la machine v rifiez que la lame et toutes les pi ces mobiles se sont immobilis es D branchez le fil de la bougie et mettez le la terre contre le moteu...

Page 30: ...stimez que vous perdez votre quilibre l cher la poign e de commande de la lame imm diatement et la lame arr tera de tourner dans trois secondes 19 Utilisez la tondeuse seulement dans la lumi re du jou...

Page 31: ...cette notice ou sur le moteur m me Une consigne de s curit vous avertit de risques potentiels qui pourraient vous blesser ou blesser d autres personnes AVERTISSEMENT Il indique une forte possibilit de...

Page 32: ...ANT D UTILISER LA MACHINE IMPORTANT VEUILLEZ LIRE ATTENTIVEMENT LES CONSIGNES IMPRIM AUX TAT UNIS MTD Products Ltd P O Box 1386 KITCHENER ONTARIO N2G 4J1 Moteur de 173 cm 3 et 173 cm 3 arbre vertical...

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