9
en
How To Clean The Air Cooling System -
Figure
11
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 11). 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.
Fuel System
Fuel can become stale when stored over 30 days. Stale fuel causes acid and gum
deposits to form in the fuel system or on essential carburetor parts. To keep fuel fresh,
use Briggs & Stratton FRESH START
®
fuel stabilizer, available as a liquid additive or a
drip concentrate cartridge.
There is no need to drain gasoline from the engine if a fuel stabilizer is added according
to instructions. Run the engine for 2 minutes to circulate the stabilizer throughout the fuel
system. The engine and fuel can then be stored up to 24 months.
If gasoline in the engine has not been treated with a fuel stabilizer, it must be drained into
an approved container. Run the engine until it stops from lack of fuel. The use of a fuel
stabilizer in the storage container is recommended to maintain freshness.
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
400000
Displacement
40.03 ci (656 cc)
Bore
2.970 in (75.43 mm)
Stroke
2.890 in (73.41 mm)
Oil Capacity
62 -- 64 oz (1.8 -- 1.9 L)
Engine Specifications
Model
440000
Displacement
44.18 ci (724 cc)
Bore
3.120 in (79.24 mm)
Stroke
2.890 in (73.41 mm)
Oil Capacity
62 -- 64 oz (1.8 -- 1.9 L)
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
66 -- 68 oz (1.9 -- 2.0 L)
Tune-up Specifications *
Model
400000, 440000, 490000
Spark Plug Gap
0.030 in (0.76 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
0.004 - 0.006 in (0.10 - 0.15 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, Flat
499486
Air Filter Pre-cleaner, Flat
273638
Air Filter, Oval
792105
Air Filter Pre-cleaner, Oval
792303
Oil -- SAE 30
100028
Oil Filter
492932
Fuel Filter
691035
Fuel Additive
5041, 5058
Resistor Spark Plug
491055
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
