TM 55-1905-219-14-2
2-198. STARTING - PORTABLE FIRE PUMP (Cont).
(24) Adjust HIGH SPEED knob (7) to obtain the best operation.
(25) For slow speed operation -
(a) Rotate the HIGH SPEED knob (7) clockwise.
(b) Rotate the LOW SPEED knob (6) to obtain the best operation
2-737