Briggs & Stratton 40248 Service Spark Plug, Check Valve Clearance, Engine Air Cooling System

IMPORTANT: DO NOT use pressurized air or solvents to clean cartridge. Pressurized air can damage cartridge; solvents will dissolve cartridge.

7.Place air cleaner pre-cleaner and cartridge into housing. Cartridge must fit securely in housing.

8.Align tabs on cover with slots in housing and replace cover.

9.Hook handle and close cover.

WARNING

If air filter or air filter cover is not installed correctly, serious injury or death could result from backfire.

•DO NOT attempt to start your engine with filters or air cleaner cover removed.

10. Replace roof.

Service Spark Plug

WARNING

Unintentional sparking can result in fire or electric shock.

When adjusting or making repairs to your generator:

•Disconnect the spark plug wire from the spark plug and place the wire where it cannot contact spark plug.

When testing for engine spark:

•Use approved spark plug tester.

•DO NOT check for spark with spark plug removed.

Change the spark plug every 100 hours of operation or once each year, whichever comes first. This will help your engine to start easier and run better.

1.Clean area around spark plug.

2.Remove and inspect spark plug.

3.Check electrode gap with wire feeler gauge and reset spark plug gap to recommended gap if necessary (see Figure 18 and “Specifications”).

Figure 11 — Check Spark Plug Electrode Gap

4.Replace spark plug if electrodes are pitted, burned or porcelain is cracked. Use the recommended replacement spark plug. See Specifications.

5.Install spark plug and tighten firmly.

Check Valve Clearance

Regular valve clearance check and adjustment will improve performance and extend engine life. This procedure cannot be done without partial engine disassembly and the use of special tools. For this reason we recommend that you have an authorized service dealer check and adjust valve clearance at recommended intervals.

Engine Air Cooling System

Over time debris may accumulate in cylinder cooling fins and cannot be observed without partial engine disassembly. For this reason, we recommend you have an authorized Briggs & Stratton service dealer clean the cooling system per recommended intervals (see “Maintenance Schedule”). Equally important is to keep top of engine and rotating screen free from debris. See “Clean Debris”.

Replace Fuel Hoses and Regulator

It is strongly recommend that you replace the fuel hoses and fuel regulator after five years of use. Even though these components are designed for outdoor use, constant exposure to the elements and to sunlight causes deterioration.

Charge Battery

DANGER

Storage batteries give off explosive hydrogen gas during recharging.

Slightest spark will ignite hydrogen and cause explosion.

Battery electrolyte fluid contains acid and is extremely acidic.

Contact with battery contents will cause severe chemical burns.

A battery presents a risk of electrical shock and high short circuit current.

•DO NOT dispose of battery in a fire.

•DO NOT allow any open flame, spark, heat, or lit cigarette during and for several minutes after charging a battery.

•DO NOT open or mutilate the battery.

•Wear protective goggles, rubber apron, and rubber gloves.

•Remove watches, rings, or other metal objects.

•Use tools with insulated handles.

IMPORTANT: The generator should be started at least once every seven days and allowed to run at least

30 minutes. If this cannot be done, the battery will lose it’s charge over time.

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