Briggs & Stratton 203985GS IMPORTANT:, Saturate foam, Specifications, Service Spark Plug, Service Air Cleaner, Clean or replace the foam, 1.Clean area around spark plug

Service Air Cleaner

Your engine will not run properly and may be damaged if you run it with a dirty air cleaner.

Clean or replace the foam pre-filter every 25 hours of operation or sooner under dusty or dirty conditions. Clean or replace the paper air filter every 100 hours of operation or yearly, whichever comes first. Clean or replace more often if operating under dusty or dirty conditions.

To service the air cleaner, follow these steps:1.Loosen knobs and swing air cleaner cover (A) to the side.

C

D

A

B

E

Service Spark Plug

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 Specifications).

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.

2.Remove cover and air cleaner assembly from base (B).

3.Carefully remove cartridge retainer (C) and pre-cleaner (D) from paper filter (E).

4.Wipe clean inside of base and cover thoroughly.

5.Clean or replace the foam pre-cleaner. Wash pre- cleaner in a solution of household detergent and warm water, then rinse thoroughly. Squeeze dry in a clean cloth. DO NOT twist.

6.Saturate foam pre-cleaner in clean engine oil and squeeze in a clean, absorbent cloth to remove all excess oil. DO NOT twist.

IMPORTANT: The engine will smoke during initial start-up if too much oil is left in the pre-cleaner.

7.Clean paper filter by tapping it gently on a solid surface. If the paper filter is too dirty, replace it with a new one. Dispose of the old filter properly.

8.Reinstall pre-cleaner on retainer.

9.Install pre-cleaner in cover with mesh side toward paper filter. Install paper filter in cover or on base.

10.Assemble air cleaner assembly and cover onto base and tighten knobs.

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