bronco ll injector question?

i guess it shouldnt matter on what vehicle,mine is a 1989 broncoll 2wd, 2.9..........wanted to know can u manually clean the fuel injectors on this?and r there any tips or tricks to taking them out and putting in? thnx for any and all help.

http://www.autopart.com/tools/toolsmain/tool/T_3360.htm
http://www.autopart.com/tools/toolsmain/tool/T_3370.htm
For one job its probably cheaper to pay for this job.