Your pump cam follower may be broken, such that the pump is just not working. Good news, you don't need to buy any new parts. If you open it up and find that the cam follower plastic tabs are broken, Gilmour provides a second set of 2 cam followers on the other side of the cam follower assembly. Just remove some screws, reverse the assembly, and you are back in business. Since the higher the wheel speed the more stress there is on these tabs, I would not recommend moving the wheels any faster than what occurs with a slow walk.
See photos at: http://s911.photobucket.com/albums/ac317/vonoretn/Gilmore%20Wheelpump%20sprayer/
Answers & Comments
Your pump cam follower may be broken, such that the pump is just not working. Good news, you don't need to buy any new parts. If you open it up and find that the cam follower plastic tabs are broken, Gilmour provides a second set of 2 cam followers on the other side of the cam follower assembly. Just remove some screws, reverse the assembly, and you are back in business. Since the higher the wheel speed the more stress there is on these tabs, I would not recommend moving the wheels any faster than what occurs with a slow walk.
See photos at:
http://s911.photobucket.com/albums/ac317/vonoretn/Gilmore%20Wheelpump%20sprayer/