Yard-Man 503 manual Troubleshooting, Problem Cause Remedy

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SECTION 8: TROUBLESHOOTING

Problem

 

Cause

 

Remedy

 

 

 

 

 

Engine fails to start

1.

Blade control handle disengaged.

1.

Engage blade control handle.

 

2.

Spark plug wire disconnected.

2.

Connect wire to spark plug.

 

3.

Fuel tank empty or stale fuel.

3.

Fill tank with clean, fresh gasoline.

 

4.

Blocked fuel line.

4.

Clean fuel line.

 

5.

Faulty spark plug.

5.

Clean, adjust gap, or replace.

 

6.

Engine flooded

6.

Wait a few minutes to restart, but do

 

 

 

 

not prime.

Engine runs erratic

1.

Spark plug wire loose.

1.

Connect and tighten spark plug wire.

 

2.

Blocked fuel line or stale fuel.

2.

Clean fuel line; fill tank with clean,

 

 

 

 

fresh gasoline

 

3.

Vent in gas plugged.

3.

Clear vent.

 

4.

Water or dirt in fuel system.

4.

Drain fuel tank. Refill with fresh fuel.

 

5.

Dirty air cleaner.

5.

Clean air cleaner.

 

6.

Carburetor out of adjustment.

6.

Adjust carburetor.

Engine overheats

1.

Engine oil level low.

1.

Fill crankcase with proper oil.

 

2.

Air flow restricted.

2.

Remove blower housing and clean.

 

3.

Carburetor not adjusted properly.

3.

Adjust carburetor.

Idles poorly

1.

Spark plug fouled, faulty or gap too

1.

Reset gap to.030” or replace spark

 

 

wide.

 

plug.

 

2.

Carburetor improperly adjusted.

2.

Adjust carburetor.

 

3.

Dirty air cleaner.

3.

Clean air cleaner.

Excessive vibration

1.

Cutting blade loose or unbalanced.

1.

Tighten blade and adapter. Balance

 

 

 

 

blade.

 

2.

Bent cutting blade.

2.

Replace blade.

Mower will not mulch grass

1.

Wet grass.

1.

Do not mow when grass is wet; wait

 

 

 

 

until later to cut.

 

2.

Excessively high grass.

2.

Mow once at a high cutting height, then

 

 

 

 

mow again at desired height or make a

 

 

 

 

narrower cutting path.

 

3.

Dull blade.

3.

Sharpen or replace blade.

Uneven cut

1.

Wheels not positioned correctly.

1.

Place all four wheels in same height

 

 

 

 

position.

 

2.

Dull blade.

2.

Sharpen or replace blade.

NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.

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Contents Operator’s Manual Table of Contents General Operation Important Safe Operation PracticesSlope Operation ServiceChildren Do NotGeneral Service Slope Gauge Setting Up Your Lawn Mower Disconnecting Spark Plug WireAssembling Your Lawn Mower Removing Unit From CartonInstalling Rear Wheels Installing Front WheelsRemoving Chute Retainer Removed and discarded before operatingOperating Your Lawn Mower Know Your Lawn MowerStopping Engine Gas and Oil Fill-UpUsing Your Lawn Mower Making AdjustmentsCutting Height Adjustment Handle Height AdjustmentGeneral Recommendations Customer ResponsibilitiesLubrication Maintenance Problem Cause Remedy TroubleshootingParts List for Model Part Description ModelMTD LLC, P.O. BOX 361131 CLEVELAND, Ohio 44136-0019 Phone MANUFACTURER’S Limited Warranty for

503 specifications

The Yard-Man 503 is a powerful and versatile lawn mower that combines efficiency, durability, and ease of use, making it a popular choice for both residential and professional landscaping needs. This equipment is designed to tackle various types of terrain, from small suburban lawns to larger commercial properties, and it delivers consistent performance across a range of conditions.

One of the main features of the Yard-Man 503 is its robust engine. Equipped with a reliable four-stroke engine, this mower delivers enough power to cut through thick grass and weeds, ensuring a clean and precise cut every time. The engine's efficiency also means that operators can enjoy extended run times without the need for frequent refueling, making it ideal for larger tasks.

In terms of cutting technology, the Yard-Man 503 boasts a wide cutting deck that typically ranges from 20 to 30 inches, allowing for faster mowing and reduced cutting time. The adjustable cutting height feature is another highlight, enabling users to customize the length of grass to fit their preferences and the needs of their lawns. Whether you require a close trim or a longer cut for a healthier lawn, the Yard-Man 503 has you covered.

Ease of maneuverability is another characteristic that sets the Yard-Man 503 apart from its competitors. Its lightweight design, coupled with ergonomic handles, allows for easy navigation around obstacles and tight spaces. The mower’s self-propelled capabilities ensure that users can cover more ground with less effort, reducing fatigue during longer mowing sessions.

In addition, the Yard-Man 503 incorporates modern safety features, including a blade brake system, ensuring that the mower stops immediately when the operator releases the handle. This feature provides peace of mind, particularly for those with pets or children nearby.

The Yard-Man 503 is designed for durability, featuring a steel deck that withstands wear and tear over time. It is built to last, promising users a long lifespan and minimal maintenance needs. Its compact design also makes it easy to store in limited spaces, a practical consideration for many homeowners.

Overall, the Yard-Man 503 stands out in the lawn care market for its combination of power, user-friendly features, and robust construction, making it an ideal choice for anyone looking to maintain a pristine lawn efficiently and effectively.
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