Info: If you want to know how to make service on a Cessna 172, the book Make it Safe! From www.lulu.com will give you a good guidance, because it shows all the necessary steps, in detail.
The primary target for this book is an A&P mechanic who wants to learn what information he/she needs to know/seek according to service on a Cessna 172 aircraft, (the secondary target is owners, who wants to do service according to FAR 43, Appendix A, Preventive Maintenance, paragraph (c) or EASA COMMISSION REGULATION (EC) No 2042/2003, PART-M, Appendix VIII, Limited Pilot Owner Maintenance).