Wallenstein BXT72S, Operator'S Manual, Page: 48 / 76

9.2 Fluids and Lubricants
The machine needs the correct fluids and lubricants for
operation and maintenance.
9.2.1 Lubricant Handling and Storage
For optimum machine efficiency, use clean lubricants and clean
containers to handle all lubricants. Store lubricants in an area
that is protected from dust, moisture, and other contaminants.
9.2.2 Engine Oil
For engine maintenance and service information, see the
engine manufacturer's manual.
Briggs & Stratton® Warranty Certified oils are recommended
for the best engine performance. However, other high-quality
detergent oils are permitted if they are classified for service SF,
SG, SH, SJ, or higher. Do not use special additives.
Outdoor temperatures determine the necessary engine oil
viscosity. Select the best oil viscosity for the expected outdoor
temperature range. Use the following chart as a guide:
°F
20 -7
°C
120 49
100 38
80 27
60 15
40 4
0 -18
-20 -29
A
B
C
D
E
01802
A SAE 30 – Below 40 °F (4 °C) the use of SAE 30 results
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 Vanguard® Synthetic 15W-50
9.2.3 Engine Fuel
For complete fuel information and use at high altitudes, see
the engine manufacturer's manual.
Fuel must meet the following specifications:
• Clean, fresh, unleaded gasoline.
• Minimum of 87 octane / 87 AKI (91 RON).
• Gasoline with up to 10% ethanol (gasohol) is acceptable if
the fuel is fresh (less than three months old).
If the machine will be in storage for longer than three months,
replace the fuel with one of the following fuel types:
• An alkylate fuel
• An engineered fuel that is high octane, ethanol-free, and
formulated with power detergent to prevent the buildup of
insoluble solids (deposits).
For instructions, see Replace the Engine Fuel on page 46 .
9.2.4 Grease
Use an SAE multi-purpose high temperature grease with extreme
pressure (EP) performance. An SAE multipurpose lithium-based
grease is an acceptable substitute.
9.2.5 Rust Protection Oil
Use a good quality rust protection oil and lubricant that is
intended for use on metal.
Service and Maintenance
BXT72S
Wood Chipper
48