Power works PD40LM51SPK5 Owner's Manual page 19

OPERATION INSTRUCTION
SELF-PROPELLED MOWING (See Figure 9)
To engage the self-propelled feature:
• Open the battery door.
• Insert the battery. Insert the safety key.
• Pull the self propel lever (1) upward to meet the handle.
To disengage the self-propelled feature:
• Release the self propel lever.
To adjust the speed of self-propelled feature:
• To increase speed push the variable speed control lever (2) towards the Rabbit Symbol.
• To decrease speed pull the variable speed control lever (2) towards the Turtle Symbol.
(1)Self propel lever
(2)Self-Propel Speed Controls
Fig. 9
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