How does a walk behind self propelled mower work?

Mine is a 6 hp Troy-Bilt front wheel drive..

I've checked the cable, and it looks fine, but it doesn't engage the wheels when I pull on the lever at the handlebar.

Thanks,
Gary

Never mind, I figured it out (sort of).
It is a cable issue. I started it, jacked up the front end, and operated the lever by hand, and the wheels kicked in just fine. I'll soak the cable in lube, and re-try it.

Thanks anyway, Gary

Gary..
If you can get oil or graphite inside the cable it will help.
also you may try to adjust the length or the inner cable OR reposition the outer cable cover... either will effect the distance the inner will move... KennyV

I soaked the cable in some used Transmissions fluid overnight, and that freed it up.
However, there are some kinks in the cable that need to be straightened.

After a couple hours of trying to straighten it, I've decided I need to invest in or find a better cable.

Thanks,
Gary