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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 onessential carburetor parts. To keep fuel fresh,
use Briggs & Stratton Advanced Formula Fuel Treatment & Stabilizer, available
wherever Briggs & Stratton genuine service parts are sold.
For engines equipped with a FRESH START
®
fuel cap, use Briggs & Stratton FRESH
START
®
available in 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 enginefor 2 minutesto circulate thestabilizer throughout the fuel
system before storage.
If gasolinein the enginehas not beentreated witha fuel stabilizer, itmust 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.
NOTICE: Store the engine level (normal operating position). If the engine is tipped for
storage, the fuel tank must be empty and the spark plug side must be up. If the fuel
tank is not empty and if the engine is tipped in any other direction, itmay be difficult to
start due to oil or gasoline contaminating the air filter and/or the spark plug.
Troubleshooting
Need Assistance? Go to BRIGGSandSTRATTON.COM or call 1-800-233-3723.
Specifications
Engine Specifications
Model 90000
Displacement 8.54 ci (140 cc)
Bore 2.496 in (63.4 mm)
Stroke 1.75 in (44.45 mm)
Oil Capacity 15 oz (0.44 L)
Tune-up Specifications *
Model 90000
Spark Plug Gap 0.020 in (0.51 mm)
Spark Plug Torque 180 lb-in (20 Nm)
Armature Air Gap 0.006 - 0.014 in (0.15 - 0.36 mm)
Intake Valve Clearance 0.004 - 0.008 in (0.10 - 0.20 mm)
Exhaust Valve Clearance 0.004 - 0.008 in (0.10 - 0.20 mm)
* Engine powerwill decrease 3.5% for each 1,000 feet (300meters) 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, Standard 799579
Air Filter, High Capacity 798452
Oil -- SAE 30 100005
Fuel Additive 5041, 5058
Resistor Spark Plug 692051
Spark Plug Wrench 19576
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