Storage - Briggs & Stratton 106200 Repair Manual

Storage

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® Advanced Formula Fuel Treatment
& Stabilizer, available wherever Briggs & Stratton genuine
service parts are sold.
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 before storage. 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.
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