You can call American Warranty Service (AWS) for Master Mechanic parts and service information at 1-888-980-5057. They have parts for all Master Mechanic table top and free standing electric tools.
wHERE TO FIND PARTS FOR A MASTER MECHANIC 8550 CIRCULAR SAW
Where can I find parts for a 10 inch master mechanic table saw?
Chain stores, automotive parts stores, Snap-On Tools trucks...
You can try looking for parts for Master Mechanic vacuums at authorized dealers, home improvement stores, or online retailers that specialize in vacuum parts and accessories. You may also want to contact the manufacturer directly for assistance.
On the access panel of my 10" Master mechanic bandsaw there is a phone # 203-654-1761 this is for Power Tool Specialist or try this best I can do www.merchantcircle.com/business/Power.Tool.Specialists.Inc.860-654-1761
You should inquire at your nearest True Value hardware store. I've found out that they have a way of ordering parts for this tool line.
You can go to a mechanic to get it fixed or you can find the parts you need and buy them yourself so that you can repair your own car and save a bundle.
Stores which carry car repair tools will carry mechanic gloves. You can also find these gloves online; e.g. eBay, Amazon.com.
You don't leave it up to the mechanic
A Ford dealership would be the best place to find a master cylinder for a Ford F150. Parts Geek, Parts Train, and eBay also have master cylinders for a Ford F150 for sale.
There are several options of online shops selling Hummer parts. The two that were the easiest to navigate and with good prices are Hummer Parts online which you can find at http://www.hummerpartsonline.com and Hummer Parts Club which you can find at http://www.hummerpartsclub.com/.
It is definitely possible for an inexperienced home mechanic to replace a timing belt. You just need to buy the tools and the parts. You can find text and video directions for doing this on the internet. I would especially look at youtube for instructional videos so that you can see exactly how it is supposed to be done.