How do I adjust walking speed on Honda Self Propelled Mower- Model VC6X

Well, my husband bought me the Honda Self Propelled Lawn Mower Model VC6X. It's too fast for me. If I pull that lever that makes the wheels turn about half way, that's a perfect speed for me. But it's too hard for me to keep that lever pulled in about half way. It hurts my hands no matter if I hold it closer to where it connects, the side or palm up. I hope someone knows how to make the speed of the wheels slower. They use to make where you could move a lever to pick how fast the mower would roll. Not everyone is a man with long legs. :)



Thank you