Predator 69*729, Owner'S Manual

Item 69728 69729        

      Page 17

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For Engine technical questions, please call 1-800-520-0882.

SAFETY

OPERA

TION

MAINTENANCE

SETUP

Air Filter Element Maintenance

1.  Remove the air filter cover and the 

air filter elements and check for dirt. 

Clean or replace as described below.

2. 

Cleaning:

•   For “paper” filter elements: 

To prevent injury from dust and debris, 

wear ANSI-approved safety goggles, 

NIOSH-approved dust mask/respirator, and 

heavy-duty work gloves.  In a well-ventilated 

area away from bystanders, use pressurized 

air to blow dust out of the air filter. If this does 

not get the filter clean, replace it.

•   For foam filter elements: 

Wash the element in warm water and 

mild detergent several times. Rinse. 

Squeeze out excess water and allow it to dry 

completely.  Soak the filter in lightweight oil 

briefly, then squeeze out the excess oil.

3.  Install the new filter or the cleaned filter.  

Secure the Air Cleaner Cover before use.

Spark Plug Maintenance

1.  Disconnect spark plug cap from end of plug.  

Clean out debris from around spark plug.

2.  Using a spark plug 

wrench, remove 

the spark plug.

3.  Inspect the spark 

plug: 

If the electrode is 

oily, clean it using 

a clean, dry rag. If 

the electrode has 

deposits on it, polish 

it using emery paper. If the white insulator is cracked 

or chipped, the spark plug needs to be replaced.

NOTICE:

 Using an incorrect spark plug may 

damage the engine. See the Specifications chart 

for your Generator for the type and gap required.

4.  When installing a new spark plug, adjust 

the plug’s gap to the specification on the 

Specifications chart.  Do not pry against the 

electrode, the spark plug can be damaged.

5.  Install the new spark plug or the cleaned spark plug 

into the engine.  Gasket-style:  Finger-tighten until the 

gasket contacts the cylinder head, then about 1/2-2/3 

turn more. 

Non-gasket-style: Finger-tighten until the plug 

contacts the head, then about 1/16 turn more.

NOTICE:

 Tighten the spark plug properly.  

If loose, the spark plug will cause the engine 

to overheat.  If overtightened, the threads 

in the engine block will be damaged.

6.  Apply spark plug boot protector to the end of the 

spark plug and reattach the wire securely.

Cylinder 

Assembly

Spark Plug