Yard-Man 437 manual Trouble-Shootingguide, Gasoline, Mower, Off-Seasonstorage, Engine

Models: 437

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SECTION 9: OFF-SEASON STORAGE

SECTION 9: OFF-SEASON STORAGE

Prepare your lawn mower for storage at the end of the season or if the unit will not be used for 30 days or more. Store the mower in a clean, dry area.

Gasoline

Do not store gasoline from one season to another. Gasoline, stored more than one month, may affect engine performance.

Replace your gasoline can if it starts to rust. Rust and/or dirt in the gasoline will cause problems.

Engine

Follow recommendations in the accompanying engine manual for off-season storage of the engine.

Mower

NOTE: If storing the mower in an unventilated or metal storage shed, make sure to rustproof the equipment with a light oil or silicone.

Store unit in a clean, dry area. Do not store next to corrosive materials, such as fertilizer or rocksalt.

Clean underside of the mower according to instructions on page 12.

NOTE: The use of a pressure washer or garden hose to clean your mower is NOT recommended. Water may cause damage to electric components, spindles, pulleys, bearings or the engine. The use of water will result in shortened life and reduce serviceability.

Lubricate the mower as instructed on page 12.

You can fold your mower’s handle for convenience of storage.

Inspect and replace/sharpen blade, if required. Refer to page 13.

SECTION 10: TROUBLE-SHOOTING GUIDE

Problem

 

Possible Cause

 

Corrective Action

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 up tank with 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 and start again.

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 cap 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. Refer to engine manual.

Engine overheats

1.

Engine oil level low

1.

Fill crankcase with proper oil.

 

2.

Air flow restricted

2.

Clean lawn mower engine.

Occasional skip at high

1.

Spark plug gap too close

1.

Adjust gap to.030 inches.

speed

 

 

 

 

Idles poorly

1.

Spark plug fouled, faulty, or gap too wide

1.

Reset gap or replace spark plug.

 

2.

Dirty air cleaner

2.

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.

 

3.

Bent engine crankshaft

3.

Contact your nearest service center

Fails to mulch grass

1.

Wet grass

1. Wait until grass is dry to cut.

 

2.

Excessively high grass

2. Mow once at a high cutting height, then

 

 

 

 

mow again at desired height.

 

3.

Dull blade

3. Sharpen or replace blade.

Uneven cut

1.

Wheels not in same height position

1. Reposition all wheels at same height.

 

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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Yard-Man 437 manual Trouble-Shootingguide, Gasoline, Mower, Off-Seasonstorage, Engine