Dirty Hand Tools 101087, Operation Manual

18

Maintenance

Spark Plug Maintenance:

1.  Disconnect spark plug wire from the end of plug. Clean out 

debris from around the spark plug.

2.   Using a spark plug wrench, remove the spark plug. If the spark 

plug is oily, clean it with a dry rag. If the electrode has deposits 

on it, polish it using emery paper. If the white insulator is 

cracked or chipped, replace the spark plug.

3.  When installing a new spark plug, adjust the plug’s gap to the 

specification on the technical specification chart. Do not pry 

against the electrode or the insulator, the spark plug can be 

damaged.

4.  Install the new spark plug or the cleaned spark plug into the 

engine. Gasket style spark plugs should be finger-tightened 

until the gasket contacts the cylinder head, then turned about 

1/2 to 2/3 more rotation. Non-gasket-style spark plugs should 

be  finger-tightened until the plug contacts the head, then 

about 1/16 turn more.

Oil is very hot during operation and can

cause burns. Wait for engine to cool before changing oil.

Do not run the engine with too little oil. 

The engine will be permanently damaged.

Changing the engine oil

1. Make sure the engine is stopped and is level.

2. Close the fuel valve.

3. Place a drain pan underneath the crankcase’s drain plug.

4.  Remove the drain plug and, if possible, tilt the crankcase 

slightly to help drain the oil out. 

5. Replace the drain plug and tighten it.

6.  Clean the top of the dipstick and the area around it. Remove 

the dipstick by threading it counterclockwise, and wipe it off 

with a clean lint free rag.

Note: Do not thread the dipstick in when checking the oil level.

7.  Add the appropriate type of oil until the oil level is at the full 

level. SAE 10W-30 oil is recommended for general use for 

temperatures above 32°F.  Use SAE 5W-30 for temperatures 

consistently below 32°F.

8. Thread the dipstick back in clockwise.

!

WARNING

SAE VISCOSITY GRADES

AVERAGE OUTSIDE TEMPERATURE

30W

10W - 30W

5W - 30W

-20       0       20       40       60       80     100°F

1 0 1 0 7 1