6

Trouble

Shooting

For repairs beyond the minor adjust- ments listed here, contact an authorized service dealer.

Hydraulic

Trouble

Shooting

 

Problem

 

Cause

 

Remedy

 

 

Engine fails to start

1.

Spark plug wire disconnected.

1.

Connect wire to spark plug.

 

 

 

2.

Fuel tank empty or stale fuel.

2.

Fill tank with clean, fresh gasoline.

 

 

 

3.

Choke, if equipped, not in CHOKE

3.

Move choke to CHOKE position.

 

 

 

 

position.

 

 

 

 

 

4.

Faulty spark plug.

4.

Clean, adjust gap, or replace.

 

 

 

5.

Blocked fuel line.

5.

Clean fuel line.

 

 

 

6.

Engine (if equipped with a primer) not

6.

Prime engine.

 

 

 

 

primed properly.

7.

Move throttle lever to FAST posi-

 

 

 

7.

Throttle control lever not in correct

 

 

 

 

tion.

 

 

 

 

starting position.

 

 

 

 

Engine runs erratic

1.

Unit running with CHOKE applied, if so

1.

Move choke lever to OFF position.

 

 

 

 

equipped.

 

 

 

 

 

2.

Spark plug wire loose.

2.

Connect and tighten spark

 

 

 

 

 

 

 

 

 

 

 

plug wire.

 

 

 

3.

Blocked fuel line or stale fuel.

3.

Clean fuel line; fill tank with clean,

 

 

 

 

 

 

 

 

 

 

 

fresh (less than 30 days old)

 

 

 

 

 

 

gasoline.

 

 

 

4.

Water or dirt in fuel system.

4.

Drain fuel tank. Refill with

 

 

 

 

fresh fuel.

 

 

 

 

 

 

 

 

 

5.

Dirty air cleaner.

5.

Clean or replace air cleaner.

 

 

 

 

 

 

 

 

6.

Carburetor not adjusted properly.

6.

See authorized service dealer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine Overheats

1.

Engine oil level low.

1.

Fill crankcase with proper oil.

 

 

 

2.

Dirty air cleaner.

2.

Clean or replace air cleaner.

 

 

 

3.

Carburetor not adjusted properly.

3.

See authorized service dealer.

 

 

 

 

 

 

 

 

Problem

 

Cause

 

Remedy

Cylinder rod will not

1.

Broken drive shaft.

1.

See authorized service dealer.

move

2.

Shipping plugs left in hydraulic hoses.

2.

Disconnect hydraulic hoses,

 

 

 

 

remove shipping plugs, reconnect

 

 

 

 

hoses.

 

3.

Set screws in coupling not adjusted

3.

See operator’s manual for correct

 

 

adjustment.

 

 

properly.

 

 

 

4.

Correct engine/pump alignment as

 

4.

Loose shaft coupling.

 

 

necessary.

 

5.

Gear sections damaged.

 

 

5.

See authorized service dealer.

 

6.

Damaged relief valve.

 

6.

See authorized service dealer.

 

7.

Hydraulic lines blocked.

 

7.

Flush and clean hydraulic system.

 

8.

Incorrect oil level.

 

8.

Check oil level.

 

9.

Damaged directional valve.

 

9.

See authorized service dealer.

 

10. Blocked directional valve.

 

10.Flush and clean hydraulic system.

 

 

 

16

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Yard-Man 550 Thru 570 manual Problem Cause Remedy

550 Thru 570 specifications

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