SECTION 9: TROUBLESHOOTING

Problem

 

Cause

 

Remedy

 

 

 

 

 

Engine fails to start

1.

Fuel tank empty, or stale fuel present in gas

1.

Fill tank with clean, fresh gasoline.

 

 

tank.

 

Fuel becomes stale after thirty days

 

 

 

 

unless a fuel stabilizer is used.

 

2.

Blocked fuel line.

2.

Clean the fuel line.

 

3.

Choke not in ON position

3.

Move switch to ON position

 

4.

Faulty spark plug.

4.

Clean, adjust gap or replace.

 

5.

Safety key not in ignition switch on engine.

5.

Insert the key fully into the switch.

 

6.

Spark plug wire disconnected.

6.

Connect spark plug wire.

 

7.

Primer button not being used properly.

7.

Refer to the engine manual for proper

 

 

 

 

priming instructions.

 

8.

Fuel shut-off valve (if so equipped) closed.

8.

Open fuel shut-off valve.

Engine runs erratic

1.

Unit running on CHOKE.

1.

Move choke lever to OFF position.

 

2.

Blocked fuel line or stale fuel.

2.

Clean fuel line. Refill with fresh fuel.

 

3.

Water or dirt in fuel system.

3.

Drain fuel tank and carburetor. Refill

 

 

 

 

with fresh fuel.

 

4.

Carburetor out of adjustment.

4.

Refer to the engine manual packed

 

 

 

 

with your unit or have carburetor

 

 

 

 

adjusted by an authorized MTD

 

 

 

 

service dealer.

Loss of power

1.

Spark plug wire loose.

1.

Connect and tighten spark plug wire.

 

2.

Gas cap vent hole plugged.

2.

Remove ice and snow from gas cap.

 

 

 

 

Be certain vent hole is clear.

 

3.

Exhaust port plugged.

3.

Refer to the engine manual packed

 

 

 

 

separately with your unit.

Engine overheats

1.

Carburetor not adjusted properly.

1.

Refer to the engine manual or have

 

 

 

 

the carburetor adjusted by an

 

 

 

 

authorized MTD service dealer.

Excessive vibration

1.

Loose parts or damaged auger.

1.

Stop engine immediately and

 

 

 

 

disconnect spark plug wire. Tighten all

 

 

 

 

bolts and nuts. If vibration continues,

 

 

 

 

have unit serviced by an authorized

 

 

 

 

MTD service dealer.

Unit fails

1.

Traction control cable in need of

1.

Adjust traction control cable. Refer to

to propel itself

 

adjustment.

 

Section 6 of this manual.

 

2.

Drive belt loose or damaged.

2.

Replace drive belt. Refer to Section 8

 

 

 

 

of this manual.

Unit fails

1.

Discharge chute clogged.

1.

Stop engine immediately and

to discharge snow

 

 

 

disconnect spark plug wire. Clean

 

 

 

 

chute area and auger housing.

 

2.

Foreign object lodged in auger.

2.

Stop engine immediately and

 

 

 

 

disconnect spark plug wire. Remove

 

 

 

 

object from auger.

 

3.

Auger control cable in need of adjustment.

3.

Adjust auger control cable. Refer to

 

 

 

 

Section 6 of this manual.

 

4.

Auger belt loose or damaged.

4.

Refer to the Service section of this

 

 

 

 

manual.

 

5.

Auger shear bolts have sheared.

5.

Replace auger shear bolts. Refer to

 

 

 

 

Figure 1 on page 5 of this manual.

17

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Yard-Man E643E, E663H manual Troubleshooting, Problem Cause Remedy
Page 16 Page 18

E663H, E643E specifications

Yard-Man is a renowned brand in outdoor power equipment, known for its robust lawn mowers and garden tools tailored for efficiency and performance. Two notable models from their lineup are the Yard-Man E643E and the E663H, both designed to meet the diverse needs of homeowners and garden enthusiasts.

The Yard-Man E643E is a lightweight yet powerful electric lawn mower. It features a 14-inch cutting deck, making it perfect for small to medium-sized yards. The mower is powered by a potent 12-amp electric motor that provides the efficiency of a gas mower without the noise and emissions. One of the standout features of the E643E is its adjustable cutting height, which ranges from 1 inch to 3 inches, allowing users to customize the grass height according to their preferences and seasonal needs. This model is equipped with a rear bagger that collects clippings for easy disposal, ensuring a clean and manicured appearance for your lawn.

On the other hand, the Yard-Man E663H is a self-propelled gas mower built for those who require a more robust solution for larger lawns. It features a 21-inch steel cutting deck, which allows for wider cutting paths, reducing mowing time. The E663H is powered by a reliable Honda engine, known for its durability and efficiency. This model also offers multiple cutting height settings, ensuring versatility in grass management. An ergonomic handle with variable speed control makes it comfortable for users to operate, while the rear-wheel drive enhances traction, especially on uneven terrains.

Both models incorporate innovative technologies that enhance user experience. The E643E’s electric motor ensures quiet operation, making it ideal for residential areas without the disturbance typically associated with gas mowers. The E663H, meanwhile, utilizes a swingback blade system that enhances cutting efficiency and provides a clean cut while reducing the risk of blade damage from obstacles.

In terms of durability, both mowers are constructed with high-quality materials designed to withstand the rigors of landscape maintenance. Easy maintenance features, such as tool-less access to the blade and easy cleaning options, further cement their practicality.

In summary, both the Yard-Man E643E and E663H offer distinct advantages tailored to different user needs. The E643E is perfect for eco-conscious homeowners seeking an electric solution, while the E663H serves those needing a powerful, robust gas mower. Each is designed to make lawn care a hassle-free task, contributing to a healthier and more appealing outdoor space.
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