Troubleshooting; Specifications - Briggs & Stratton 490000 - REV A Operator's Manual

Add Oil
Place engine level.

Clean the oil fill area of any debris.

See the Specifications section for oil capacity.

1. Remove the dipstick (D) and wipe with a clean cloth (Figure 4).
2. Pour the oil slowly into the engine oil fill (E). Do not overfill. After adding oil, wait
one minute and then check the oil level.
3. Install and tighten the dipstick.
4. Remove the dipstick and check the oil level. It should be at the FULL mark (F) on the
dipstick.
5. Install and tighten the dipstick.
How To Service The Air Filter - Figure 6
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
Never start or run the engine with the air cleaner assembly (if equipped) or the

air filter (if equipped) removed.
NOTICE: Do not use pressurized air or solvents to clean the filter. Pressurized air can
damage the filter and solvents will dissolve the filter.
1. Remove the cover (A, Figure 6).
2. To remove the filter (B), lift the end of the filter.
3. To loosen debris, gently tap the filter on a hard surface. If the filter is excessively
dirty, replace with a new filter.
4. Install the filter into the engine base (C) and push down until the filter snaps in place.
5. Install the cover.
How To Clean The Air Cooling System - Figure 7
WARNING
Running engines produce heat. Engine parts, especially muffler,
become extremely hot.
Severe thermal burns can occur on contact.
Combustible debris, such as leaves, grass, brush, etc. can catch fire.
Allow muffler, engine cylinder and fins to cool before touching.

Remove accumulated debris from muffler area and cylinder area.

NOTICE: Do not use water to clean the engine. Water could contaminate the fuel
system. Use a brush or dry cloth to clean the engine.
This is an air cooled engine. Dirt or debris can restrict air flow and cause the engine to
overheat, resulting in poor performance and reduced engine life.
Use a brush or dry cloth to remove debris from the finger guard/rotating screen (A).
Keep linkage, springs and controls (B) clean. Keep the area around and behind the
muffler free of any combustible debris (Figure 7). Make sure the oil cooler fins (C) are
free of dirt and debris.
Storage
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
When Storing Fuel Or Equipment With Fuel In Tank
Store away from furnaces, stoves, water heaters or other appliances that have

pilot lights or other ignition sources because they can ignite fuel vapors.
Engine Oil
While the engine is still warm, change the engine oil. See the How To Change The Oil
section.
8

Troubleshooting

Need Assistance? Go to BRIGGSandSTRATTON.COM or call 1-800-233-3723.

Specifications

Engine Specifications
Model
Displacement
Bore
Stroke
Oil Capacity
Tune-up Specifications *
Model
Spark Plug Gap
Spark Plug Torque
Armature Air Gap
Intake Valve Clearance
Exhaust Valve Clearance
* Engine power will decrease 3.5% for each 1,000 feet (300 meters) above sea level and
1% for each 10 F (5.6 C) above 77 F (25 C). The engine will operate satisfactorily at
an angle up to 15. Refer to the equipment operator's manual for safe allowable
operating limits on slopes.
Common Service Parts n
Service Part
Air Filter, Oval
Oil -- SAE 5W-30
Oil Filter
Resistor Spark Plug
Long Life Platinum Spark Plug
Spark Plug Wrench
Spark Tester
n We recommend that you see any Briggs & Stratton Authorized Dealer for all
maintenance and service of the engine and engine parts.
490000
49.42 ci (810 cc)
3.300 in (83.81 mm)
2.890 in (73.41 mm)
62 -- 64 oz (1.8 -- 1.9 L)
490000
0.020 in (0.51 mm)
180 lb-in (20 Nm)
0.008 - 0.012 in (0.20 - 0.30 mm)
0.004 - 0.006 in (0.10 - 0.15 mm)
0.009 - 0.011 in (0.23 - 0.28 mm)
Part Number
798748
100074
492932
692051
5066
19374
19368
BRIGGSandSTRATTON.COM