This manual is designed primarily for use by trained mechanics in a properly equipped shop. However, it contains enough detail and basic in- formation to make it useful to the owner who de- sires to perform his own basic maintenance and repair work. A basic knowledge of mechanics, the proper use of tools, and workshop proce- dures must be understood in order to carry out maintenance and repair satisfactorily. When- ever the owner has insufficient experience or doubts his ability to do the work, all adjust- ments, maintenance, and repair should be car- ried out only by qualified mechanics.