Lesson 1/Learning Event 4
Operation in Extreme Cold. When you operate the 50-GPM Pump in extreme cold, inspect it
carefully for any malfunctions during operation.
Keep the unit free of snow and ice. Cover the unit when not in use. Provide a suitable shelter for
it during outside operation. Keep the gasoline tank full to avoid moisture condensation. Service
the fuel filter frequently. To avoid freezing, drain the pump after operation. In extreme cold, it
may be necessary to preheat the pump body prior to operation. Apply heat cautiously and
Do NOT overheat the pump body.
Lubricate the gasoline engine in accordance with the current LO 5-2805-256-12 instructions for
cold weather operation (Appendix A on page 63).
Do not operate the engine for short periods. Operate the engine for a
minimum of 30 minutes to evaporate any condensation. Allow the engine to
reach the proper operating temperature.
Operation in Salt Water Areas. Salt water causes corrosive action on metal. Exercise care to
keep the unit from contact with salt water. Wash the unit frequently with fresh water. Protect the
fuel tank when it is open. Paint all exposed nonpolished metal surfaces with standard issue rust
preventive, if available, or cover with a light coating of grease. Flush the pump if salt water has
entered the pump body. Flush if there has been a possibility of salt water contamination.
Exercise extra care in lubricating the engine. Lubricate in accordance with the current LO 5-
2805-256-12 (Appendix A on page 63).
Operation at High Altitude. The 50-GPM Pump will operate at high altitude without any special
adjustments or service. Make sure that the air cleaner is clean and does not restrict the flow of
air. Service the air cleaner frequently. At high altitude, it may be necessary to have the
carburetor adjusted if uneven or hesitant performance is observed.