Battery Maintenance; Engine Speed Adjustment; Oil Specifications - Miller Big Blue 500 Pro Owner's Manual

8-7. Battery Maintenance

Lead acid batteries discharge when stored in any temperature. Units that are stored should have the battery recharged every three months and before
being put into service. To preserve optimum battery performance and life, recharge battery in storage when the open-circuit voltage drops to 12.4 volts
DC when measured across the battery terminals.

8-8. Engine Speed Adjustment

.
Engine functions are controlled by the engine ECU. Tampering with the engine ECU will void engine warranty. Contact engine Factory Authorized
Service Agent for engine adjustments.

8-9. Oil Specifications

.
For any normal oil change interval, any en-
gine oil with a CJ-4 and low ash rating may
be used. After the initial run-in period, syn-
thetic oil may be used to replace oil
shipped in the engine.
Synthetic lubricating oils have a better tem-
perature and oxidation stability, better soot
dispersal properties, and a relatively low
cold viscosity making them suitable for use
in arctic temperatures.
Use table to select appropriate product.
Notes
.
Complete Parts List available at www.MillerWelds.com
Synthetic Oil Viscosity Chart
Ref. 272 444
OM-278739 Page 49