Mercury Mariner (outboard) 20 Jet-20-25 - 25 Marathon 25 Seapro Service Manual This manual is your number one source for repair and service information. They are specifically written for the do-it-yourselfer as well as the experienced mechanic. Using this repair manual is an inexpensive way to keep your vehicle working properly. Each manual provides step-by-step instructions based on the complete disassembly of the machine. It is this level of detail, along with hundreds of photos and illustrations, that guide the reader through each service and repair procedure. This manual can be kept on your harddrive, burned to CDROM, printed in its entirety, or just print the pages you need!!! Detailed substeps expand on repair procedure information. Notes, cautions and warnings throughout each chapter pinpoint critical information. Numbered instructions guide you through every repair procedure step by step. Bold figure number help you quickly match illustrations with instructions. Detailed illustrations, drawings and photos guide you through every procedure. Enlarged inset helps you identify and examine parts in detail.