I'd pump it until it came out or had one of the small tubes in it, and do the same frequently until it does come out regularly. It is going someplace and if it's not coming out, it must be able to hold more.
I had a family member that bought a new tractor not long ago and there were several grease fittings when he put grease in, nasty rusty looking water came out of the joints. They tried giving him crap about it just being where they pressure wash the machines. He made them give him a different tractor that hadn't been setting as long. I had quite a few fittings on my tractor that held quite a bit before getting anything out of the joints, I was pleased all the joints at least had some grease in them. I could tell because their grease was a different color than what I use. I think I used 3 small tubes of grease the first day I had mine just ensuring everything was done well, including the assembly of my finish mower and rotary cutter.
With a new tractor, greasing it often is important. Even if the joints are all filled well during assembly, pressure from even a high pressure grease gun isn't sufficient to get the grease into the parts of the joints bearing the most load, it takes the path of least resistance and oozes out elsewhere. The joints all need worked well to work the grease into those surfaces. I've been greasing at least a few joints every time I take the tractor out and will continue to do so throughout the life of the tractor. Which joints I grease depend on what I've been doing or will be doing with the tractor. I've been greasing my FEL every time I use it for any amount of time or load, same with my backhoe, I've greased my front axle pivot every time I've taken mine out due to my rough terrain and also because I'm still getting the factory grease out putting better grease in. Once I am no longer seeing as much of the manufacturer's grease oozing from the joint as I pump in fresh then I'll reduce the frequency.
Keeping grease in there is how you keep water and dirt out, it should be full. my:2cents:
