Well I got my self an air powered grease gun and have now greased the wheels.
The bottom nipples look impossible to reach, so I didn't use them. But from the top I was able to get enough grease at the top and can see it appearing at the bottom. Which I assume is the signal that it's time to stop!
Is it bad practice not to grease from the bottom?
I'm hoping to take it for a drive tomorrow.
