How To Check/Add Oil; Fuel Recommendations; High Altitude - Briggs & Stratton 7800950-00 Operator's Manual

How To Check/Add Oil

Before adding or checking the oil
• Place engine level.
• Clean the oil fill area of any debris.
1. Remove the dipstick (A, Figure 4) and wipe with a clean
cloth.
NOTE:
On some models, the dipstick is accessible through an
opening behind the operator seat.
2. Insert and tighten the dipstick.
3. Remove the dipstick and check the oil level. It should be
at the top of the full indicator (B) on the dipstick.
4. If low, add oil slowly into the engine oil fill (C). Do not
overfill. After adding oil, wait one minute and then
recheck the oil level.
5. Replace and tighten the dipstick.
A
B
Figure 4
C A

Fuel Recommendations

Fuel must meet these requirements:
• Clean, fresh, unleaded gasoline.
• A minimum of 87 octane/87 AKI (91 RON). High altitude
use, see below.
• Gasoline with up to 10% ethanol (gasohol) is
acceptable.
NOTICE: Do not use unapproved gasolines, such as E15
and E85. Do not mix oil in gasoline or modify the engine to
run on alternate fuels. Use of unapproved fuels will damage
the engine components, which will not be covered under
warranty.
To protect the fuel system from gum formation, mix a fuel
stabilizer into the fuel. See Storage. All fuel is not the
same. If starting or performance problems occur, change
fuel providers or change brands. This engine is certified to
operate on gasoline.
The emissions control system for this engine is EM (Engine
Modifications).

High Altitude

At altitudes over 5,000 feet (1524 meters), a minimum 85
octane/85 AKI (89 RON) gasoline is acceptable.
For carbureted engines, high altitude adjustment is
required to maintain performance. Operation without this
adjustment will cause decreased performance, increased
fuel consumption, and increased emissions. Contact a
Briggs & Stratton Authorized Service Dealer for high altitude
adjustment information. Operation of the engine at altitudes
below 2,500 feet (762 meters) with the high altitude
adjustment is not recommended.
For Electronic Fuel Injection (EFI) engines, no high altitude
adjustment is necessary.
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