8
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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
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.
WARNING
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.
Troubleshooting
Need Assistance? Go to
BRIGGSandSTRATTON.COM
or call
1-800-233-3723
.
Specifications
Engine Specifications
Model
490000
Displacement
49.42 ci (810 cc)
Bore
3.300 in (83.81 mm)
Stroke
2.890 in (73.41 mm)
Oil Capacity
62 -- 64 oz (1.8 -- 1.9 L)
Tune-up Specifications *
Model
490000
Spark Plug Gap
0.020 in (0.51 mm)
Spark Plug Torque
180 lb-in (20 Nm)
Armature Air Gap
0.008 - 0.012 in (0.20 - 0.30 mm)
Intake Valve Clearance
0.004 - 0.006 in (0.10 - 0.15 mm)
Exhaust Valve Clearance
0.009 - 0.011 in (0.23 - 0.28 mm)
*
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
Part Number
Air Filter, Oval
798748
Oil -- SAE 5W-30
100074
Oil Filter
492932
Resistor Spark Plug
692051
Long Life Platinum Spark Plug
5066
Spark Plug Wrench
19374
Spark Tester
19368
n
We recommend that you see any Briggs & Stratton Authorized Dealer for all
maintenance and service of the engine and engine parts.
Not
for
Reproduction
