Oil Recommendations; Fuel Recommendations - Briggs & Stratton Vanguard 54000 Gaseous Manual Del Operario

I. Air Intake Grille
J. Electric Starter
K. Starter Solenoid
L. Regulator/Rectifier
M. LPG/NG Mixer
N. Oil Cooler (if equipped)
O. Muffler (if equipped)
Control Symbols and Meanings
Symbol Meaning
Engine speed - Fast
Engine speed - Stop
Operation

Oil Recommendations

Oil Capacity: See the Specifications section.
NOTICE
This engine was shipped from Briggs & Stratton without oil. Equipment manufacturers
or dealers may have added oil to the engine. Before you start the engine for the first
time, make sure to check the oil level and add oil as specified by the instructions in
this manual. If you start the engine without oil, it will be damaged beyond repair and
will not be covered under warranty.
We recommend the use of Briggs & Stratton
performance. Other high-quality detergent oils are permitted if classified for service SF,
SG, SH, SJ or higher. Do not use special additives.
Outdoor temperatures determine the correct oil viscosity for the engine. Use the chart
to select the best viscosity for the outdoor temperature range expected. Engines on
most outdoor power equipment operate well with 5W-30 Synthetic oil. For equipment
operated in hot temperatures, Vanguard
protection.
A SAE 30 - Below 40 °F (4 °C) the use of SAE 30 will result in hard starting.
B 10W-30 - Above 80 °F (27 °C) the use of 10W-30 may cause increased oil
consumption. Check the oil level frequently.
C 5W-30
D Synthetic 5W-30
E
®
Synthetic 15W-50
Vanguard
Check Oil Level
See Figure: 3
Before adding or checking the oil
Symbol Meaning
Engine speed - Slow
On - Off
®
Warranty Certified oils for best
®
15W-50 Synthetic oil gives the best
• Make sure the engine is level.
• Clean the oil fill area of any debris.
1. Remove the dipstick (A, Figure 3) and wipe with a clean cloth.
2. Fully install the dipstick (A, Figure 3).
3. Remove the dipstick and check the oil level. Correct oil level is at the top of the full
indicator (B, Figure 3) on the dipstick.
4. If oil level is low, slowly add oil into the engine oil fill (C, Figure 3). Do not overfill.
After adding oil, wait one minute and then recheck the oil level.
5. Fully install the dipstick (A, Figure 3).
Low Oil Protection System (if equipped)
Some engines are equipped with a low oil sensor. If the oil is low, the sensor will either
activate a warning light or stop the engine. Stop the engine and follow these steps
before restarting the engine.
• Make sure the engine is level.
• Check the oil level. See the Check Oil Level section.
• If the oil level is low, add the proper amount of oil. Start the engine and make sure
the warning light (if equipped) is not activated.
• If the oil level is not low, do not start the engine. Contact a Briggs & Stratton
Authorized Service Dealer to have the oil problem corrected.

Fuel Recommendations

WARNING
Missing or inoperative "fuel lock-off" valve can cause a fire or explosion.
• Do not operate the equipment if the "fuel lock-off" valve is missing or inoperative.
Fuel must meet these requirements
• Use clean, dry fuel, free of moisture or any particulate material. Using fuels outside
the following recommended values may cause performance problems.
• In engines set up to run on LPG, commercial grade HD5 LPG is recommended.
Recommended fuel composition is fuel with a minimum fuel energy of 2500 BTU's/
ft³ with maximum propylene content of 5% and butane and heavier gas content of
2.5% and minimum propane content of 90%.
NG or LPG engines are certified to operate on natural or liquid propane gas. The
emissions control system for this engine is EM (Engine Modifications).
WARNING
The equipment on which this engine is mounted is equipped with an automatic safety
gas "fuel lock-off" valve. Do not operate the equipment if the "fuel lock-off" valve is
missing or inoperative
Add Fuel
WARNING
Gaseous vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
When Adding Fuel
• Fill fuel tank outdoors or in well-ventilated area.
• Check fuel lines, tank, cap, and fittings frequently for cracks or leaks. Replace is
necessary.
For information on refueling natural or LP gas engines, read the operating instructions
supplied by the equipment manufacturer.
Start and Stop Engine
Start Engine
WARNING
Gaseous vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
When Starting Engine
• Ensure that spark plug, muffler, and air cleaner (if equipped) are in place and
secured.
• Do not crank engine with spark plug removed.
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