(c) Disconnect fuel return hose from fuel return tube and place it in a suitable container for collecting
fuel and preservative with a 55 gallon (208 liters) capacity (para 4-29).
(d) Open valve on fuel/preservative container to fuel position.
(e) Start engine (para 2-9) and allow it to operate at fast idle until engine is warm.
Push throttle lever forward until engine is running at 3/4 speed (2,100 rpm).
(g) Turn fuel/preservative valve to preservative position.
(h) When undiluted preservative oil is flowing from the fuel return line, turn ignition key to "Off"
Turn fuel/preservative valve to "Off" position.
Disconnect fuel/preservative hose from fuel sediment bowl.
(m) Discard fuel/preservative mixture collected during preservation process.
(5) Prepare crankcase for long term storage.
Level A and level C methods for preparing the crankcase for storage are different. The following
instructions cover level A preservation methods. Level C only requires that the crankcase be filled to the
operating level with lubricating oil as specified by the Lubrication Chart (Figure 3-1).
(b) Fill crankcase to operating level with preservative oil (item 40, appendix E).
(c) Attach a tag to crankcase till tube stating: "THIS CRANKCASE IS FILLED TO OPERATING
LEVEL WITH PRESERVATIVE LUBRICATING OIL. DRAIN AND REFILL CRANKCASE
TO OPERATING LEVEL ACCORDING TO TM 5-3985-369-14 BEFORE START UP."
(6) Prepare air intake system for long term storage:
(b) Fog inside of air cleaner cannister with about one ounce of preservative oil (item 40, appendix E).