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TROU BLE  SHOOTING

PROB LEM

POS SI BLE  CAUSE(S)

COR REC TIVE  AC TION

En gine fails to start

1. Blade con trol han dle dis en -

gaged.

2. Spark plug wire dis con nected.

3. Fuel tank empty, or stale fuel.

4. Blocked fuel line.

5. Faulty spark plug.

6. En gine  flooded.

1. En gage blade con trol han dle.

2. Con nect spark plug wire.

3. Fill tank with clean, fresh gas o line.

4. Clean the fuel line.

5. Clean, ad just gap or re place.

6. Wait a few min utes to re start, but

do not prime.

En gine runs er ratic

1. Spark plug wire loose.

2. Blocked fuel line or stale fuel.

3. Vent in gas plugged.

4. Wa ter or dirt in fuel sys tem.

5. Dirty air cleaner.

6. Car bu re tor  out  of  ad just ment.

1. Con nect and tighten spark plug wire.

2. Clean the fuel line; fill the tank

with clean, fresh gas o line. 

3. Clear vent.

4. Drain the fuel tank and car bu re -

tor. Re fill with fresh fuel.

5. Clean air cleaner.

6. Ad just  car bu re tor.

En gine  over heats

1. En gine oil level low.

2. Air flow re stricted.

3. Car bu re tor  not  ad justed  prop -

erly.

1. Fill crank case with proper oil.

2. Re move blower hous ing and

clean.

3. Ad just  car bu re tor.

Idles poorly

1. Spark plug fouled, faulty or gap 

too wide.

2. Car bu re tor  im prop erly  ad justed.

3. Dirty air cleaner.

1. Re set gap to .030" or re place

spark plug.

2. Ad just  car bu re tor.

3. Clean air cleaner.

Ex ces sive  vi bra tion

1. Cut ting blade loose or un bal -

anced.

2. Bent cut ting blade.

1. Tighten blade and adapter. Bal -

ance blade.

2. Re place  blade.

Mower will not mulch grass

1. Wet grass.

2. Ex ces sively  high  grass.

3. Dull blade. 

1. Do not mow when gras is set;

wait un til later to cut.

2. Mow once at a high cut ting

height, then mow again at de -
sired height or make a nar rower
cut ting  path.

3. Sharpen or re place blade.

Un even  cut

1. Wheels not po si tioned cor rectly.

2. Dull blade.

1. Place all four wheels in same

hight  po si tion.

2. Sharpen or re place blade.

Wheels will not pro pel

1. Belt not in stalled prop erly.

2. De bris  clog ging  drive  op er a tion.

1. Check belt for proper pul ley in -

stal la tion  and  move ment.

2. Clean out de bris.

NOTE:

 For re pairs be yond the mi nor ad just ments listed above, con tract your near est au tho rized

ser vice  dealer.

30

Summary of Contents for OG-4905

Page 1: ...Owner s Manual SET UP OPERATION MAINTENANCE IMPORTANT Read Safety Rules and Instructions Carefully PRINTED IN CANADA OG 4905...

Page 2: ...Please have your model number and serial number ready when you call NOTE Although both numbers are important you will be asked to enter only your serial number before your call can be processed For mo...

Page 3: ...used by slipping or tripping Do not hold on to the mower if you are falling release the handle immediately Never pull the mower back toward you while you are walking If you must back the mower away fr...

Page 4: ...art of this manual to measure slopes before operating this unit on a sloped or hilly area If the slope is greater than 15 degrees do not mow it DO Mow across the face of slopes never up and down Exerc...

Page 5: ...gine exhaust contains car bon monoxide an odorless and deadly gas Before cleaning repairing or inspecting make certain the blade and all moving parts have stopped Disconnect the spark plug wire and gr...

Page 6: ...a w a g n i t a r e p o f I y r u j n i s u o i r e s e s u a c d n a n r u t r e v o d l u o c r e w o m g n i d i r A y r u j n i s u o i r e s n i g n i t l u s e r p i l s d l u o c u o y d n a g...

Page 7: ...ing brackets Place the hairpin clips in the inner hole See Figure 2 Place one carriage bolt found in the hard ware pack included with your unit in the upper hole of the right handle mounting bracket f...

Page 8: ...changing your speed selection release the drive clutch control NOTE Only move the shift lever when the engine is running Changing the shift lever setting with the engine off can cause damage to the m...

Page 9: ...anual packed in your mower Read instructions carefully WARNING Never fill fuel tank in doors with engine running or until the engine has been allowed to cool for at least two minutes after running BEF...

Page 10: ...me engine as instructed in the separate engine manual packed with your unit If your unit is equipped with a two speed control on the engine refer to the separate engine manual packed with your unit St...

Page 11: ...you the best cut and do the most effective job of mulching WARNING If you strike a foreign object stop the engine Remove wire from spark plug thoroughly in spect the mower for any damage and repair th...

Page 12: ...may also be used to determine the position in which the drive clutch control is engaged If it is more comfortable to have the drive engaged with the lever further away from the handle tighten the driv...

Page 13: ...e instructions Maintain engine oil as instructed in the sepa rate engine manual packed with your unit Read and follow instructions carefully Under normal conditions service air cleaner as instructed i...

Page 14: ...rt over the blade with the tabs in the holes of the blade and insert the hex bolt Tighten the hex bolt to the torque listed below Blade Mounting Torque Center Bolt 450 in lb min 600 in lb max To insur...

Page 15: ...e lower pulley assembly and re move the old belt from around the crankshaft See Figure 25 15 Place the new belt over the transmission pulley Start the belt in pulley groove and rotate pulley until bel...

Page 16: ...se screws 25 Lightly lubricate the crankshaft and reinstall blade and blade adapter as described in the Cutting Blade section 26 Tip the mower back on its wheels 27 Make certain to retest the unit for...

Page 17: ...ower in a dry clean area STORAGE OF THE BATTERY The battery must be stored with a full charge A discharge battery will freeze IMPORTANT All batteries discharge during storage Recharge battery every tw...

Page 18: ...120 days from the date of purchase MTD PRODUCTS LIMITED will replace the defective battery for the original purchaser for a cost of one half 1 2 of the current retail price of the battery in effect a...

Page 19: ...not adjusted prop erly 1 Fill crankcase with proper oil 2 Remove blower housing and clean 3 Adjust carburetor Idles poorly 1 Spark plug fouled faulty or gap too wide 2 Carburetor improperly adjusted 3...

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