I have a Honda Harmony II mower. It's three years old now, and not getting full power to the wheels. On even slight uphill inclines I have to push a little. I notice that if I pull sideways on the exposed part of the throttle cable, the drive zips right along, so I guess the cable must be loose or stretched. Is there a way to adjust it? I'd rather not tear it apart myself unless I know it can be done. TIA!
---Mick