Briggs & Stratton PowerBoss Operator's Manual page 19

Change oil while engine is still warm from running, as
follows:
1. Drain fuel tank by running pressure washer until fuel
tank is empty.
2. Disconnect spark plug wire and keep it away from
spark plug.
3. Clean area around oil fill, remove oil fill cap/dipstick.
Wipe dipstick clean.
4. Tip your pressure washer to drain oil from oil fill into a
suitable container making sure you tip your unit away
from spark plug. When crankcase is empty, return
pressure washer to upright position.
5. Slowly pour recommended oil (about 20 oz. (0.6 l)) into
oil fill opening. Pause to permit oil to settle. Fill to Full
mark on dipstick.
6. Wipe dipstick clean each time oil level is checked. DO
NOT overfill.
7. Replace and tighten dipstick.
8. Wipe up any remaining oil.
9. Reconnect spark plug wire to spark plug.
Service Air Cleaner
Your engine will not run properly and may be damaged if
you run it with a dirty air cleaner. Service more often if
operating under dirty or dusty conditions.
To service the air cleaner, follow these steps:
1. Loosen fastener (A) and remove air cleaner cover (B).
A
2. Remove air cleaner (C) from base (D).
3. To loosen debris, gently tap air cleaner on a flat
surface. If excessively dirty, replace with a new air
cleaner.
4. Install the air cleaner into the base. Make sure air
cleaner fits securely in the base.
5. Install cover and secure with fastener. Make sure
fastener is tight.
Service Spark Plug
Changing the spark plug 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
4. Replace spark plug if electrodes are pitted, burned or
5. Install spark plug and tighten firmly.
Inspect Muffler and Spark Arrester
Inspect the muffler for cracks, corrosion, or other damage.
Remove the spark arrester, if equipped, and inspect for
damage or carbon blockage. If replacement parts are
required, make sure to use only original equipment
replacement parts.
Contact with muffler area could cause burns resulting in
B
serious injury.
• DO NOT touch hot parts and AVOID hot exhaust gases.
• Allow equipment to cool before touching.
C
• Keep at least 5 feet (152 cm) of clearance on all sides of
pressure washer including overhead.
• It is a violation of California Public Resource Code, Section
4442, to use or operate the engine on any forest-covered,
brush-covered, or grass-covered land unless the exhaust
system is equipped with a spark arrester, as defined in Section
4442, maintained in effective working order. Other states or
federal jurisdictions may have similar laws.
D
Contact the original equipment manufacturer, retailer, or dealer
to obtain a spark arrester designed for the exhaust system
installed on this engine.
• Replacement parts must be the same and installed in the same
position as the original parts.
spark plug gap to recommended gap if necessary (see
Specifications).
porcelain is cracked. Use the recommended
replacement plug. See Specifications.
WARNING Exhaust heat/gases could ignite
combustibles, structures or damage fuel
tank causing a fire, resulting in death,
serious injury and/or property damage.
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