MTD 5DM ユーザーズマニュアル

Engine fails to start

1.  Spark plug wire disconnected.
2.  Fuel tank empty or stale fuel.
3.  Choke, if equipped, not in CHOKE 

position.

4.  Trunnions not depressing safety switch.
5.  Faulty spark plug.
6.  Blocked fuel line.
7.  Engine Flooded.

1.  Connect wire to spark plug.
2.  Fill tank with clean, fresh gasoline.
3.  Move choke to CHOKE position. 

4.  Move cylinder into locked position.
5.  Clean, adjust gap, or replace.
6.  Clean fuel line.
7.  Wait a few minutes to start.

Engine runs erratic

1.  Push CHOKE knob in.
2.  Connect and tighten spark  

plug wire.

3.  Clean fuel line; fill tank with clean, 

fresh (less than 30 days old) 
gasoline.

4.  Drain fuel tank. Refill with  

fresh fuel.

5.  Refer to engine maintenance 

section.

6.  Clear vent.

1.  Unit running on CHOKE, if equipped.
2.  Spark plug wire loose. 

3.  Blocked fuel line or stale fuel.

4.  Water or dirt in fuel system. 

5.  Dirty air cleaner.
6.  Vent in gas cap plugged.

Cylinder rod will not 

move

1.  Replace belt.
2.  Disconnect hydraulic hoses, 

remove shipping plugs, reconnect 
hoses.

3.  See authorized service dealer.
4.  Correct engine/pump alignment as 

necessary.

5.  See authorized service dealer.
6.  See authorized service dealer.
7.  Flush and clean hydraulic system.
8.  Check oil level.
9.  See authorized service dealer.
10.Flush and clean hydraulic system.
11. Move log splitter to level ground.

1.  Broken or worn belt.
2.  Shipping plugs left in hydraulic hoses.
 

3.  Set screws in pump pulley not 

adjusted properly.

4.  Loose pulley.
5.  Pump gear sections damaged.
6.  Damaged relief valve.
7.  Hydraulic lines blocked.
8.  Incorrect oil level.
9.  Damaged directional valve.
10. Blocked directional valve.
11. Unlevel ground; hydraulic fluid not 

reaching pump.

Engine Overheats

1.  Engine oil level low.
2.  Air flow restricted.

1.  Fill crankcase with proper oil.
2.  Remove blower housing  

and clean.

Occasional skips 

(hesitates) at 

high speed

1.  Adjust gap to .030”.

1.  Spark plug gap too close.

Idles poorly

1.  Reset gap to .030” or replace  

spark plug.

2.  Refer to engine maintenance 

section.

1.  Spark plug fouled, faulty or gap  

too wide.

2.  Dirty air cleaner.