Engine Maintenance; Checking Oil Level; Changing The Oil; Replacing The Spark Plug - Generac Power Systems 005724-1 Owner's Manual

Maintenance

3.3.3 ENGINE MAINTENANCE


When working on the generator, always
disconnect spark plug wire from spark plug
and keep wire away from spark plug.

3.3.4 CHECKING OIL LEVEL

See the "Before Starting the Generator" section for information on
checking the oil level. The oil level should be checked before each
use, or at least every eight hours of operation. Keep the oil level
maintained (Figure 11).
Figure 11 - Oil Drain, Check & Fill
Oil Drain

3.3.5 CHANGING THE OIL

Change the oil after the first eight hours of operation, then every 20
hours thereafter. If running this unit under dirty or dusty conditions,
or in extremely hot weather, change the oil more often.
 Hot oil may cause burns. Allow engine to

cool before draining oil. Avoid prolonged
or repeated skin exposure with used oil.
Thoroughly wash exposed areas with soap.
Use the following instructions to change the oil while the engine
is still warm:
• Clean area around oil drain plug.
• Remove oil drain plug from engine and oil fill plug to drain oil
completely into a suitable container.
• When oil has completely drained, install oil drain plug and
tighten securely.
• Fill engine with recommended oil. (See "Before Starting the
Generator" for oil recommendations).
• Wipe up any spilled oil.
• Dispose of used oil at a proper collection center.
10
Oil Check & Fill

3.3.6 REPLACING THE SPARK PLUG

Use spark plug F6TC, NGK BPR4ES or Champioin RN14YC.
Replace the plug once each year. This will help the engine start
easier and run better.
1. Stop the engine and pull the spark plug wire off of the spark
plug.
2. Clean the area around the spark plug and remove it from the
cylinder head.
3. Set the spark plug's gap to 0.70-0.80 mm (0.028-0.031 in.).
Install the correctly gapped spark plug into the cylinder head
and torque to 15 ft/lbs. (Figure 12).
Figure 12 - Spark Plug Gap

3.3.7 SPARK ARRESTOR

1. Shut off generator and allow the engine and muffler to cool
down completely before servicing spark arrestor (located on
the back of the muffler).
2. Remove the clamp and spark arrestor screen.
3. Clean the spark arrestor screen with a small wire brush.
4. Replace the spark arrestor if it is damaged.
5. Installation of the spark arrestor screen is the reverse of the
removal.

3.4 SERVICE AIR FILTER

The engine will not run properly and may be damaged if using a
dirty air filter. Clean the air filter once a year (Figure 13). Clean or
replace more often if operating under dusty conditions.
• Remove air filter cover.
• Wash in soapy water. Squeeze filter dry in clean cloth (DO NOT
TWIST).
• Clean air filter cover before re-installing it.
To order a new air filter, please contact the nearest authorized
service center at 1-888-436-3722.
NOTE: