As I remember the big difference between 14-16 types & type 17 were the motor parts and the gears and most likely the main housing ( basically the whole saw). Seller: nty123 (12,765) 99.8, Location: Petaluma, California, US, Ships to: US, CA, Item: 182668958787 Skilsaw Mag 77 13 Amp 7-1/4-Inch Worm Drive Circular Saw Model HD77M. Excludes: Afghanistan, Kazakhstan, Mongolia, Nepal, Tajikistan, Azerbaijan Republic, Georgia, Turkmenistan, Armenia, Uzbekistan, Bhutan, India, Kyrgyzstan, Vietnam, Laos, Micronesia, Fiji, Papua New Guinea, Solomon Islands, Marshall Islands, Nauru, Wallis and Futuna, Western Samoa, Tonga, Tuvalu, Vanuatu, Kiribati, New Caledonia, Palau, American Samoa, Niue, French Polynesia, Cook Islands, Guam, Greenland, Saint Pierre and Miquelon, Ghana, Djibouti, Cape Verde Islands, Mali, Botswana, Sierra Leone, Madagascar, Saint Helena, Seychelles, Gambia, Liberia, Rwanda, Libya, Cameroon, Central African Republic, Gabon Republic, Lesotho, Mayotte, Nigeria, Zimbabwe, Mauritius, Guinea, CГґte d'Ivoire (Ivory Coast), Chad, Kenya, Guinea-Bissau, Eritrea, Senegal, Togo, Morocco, Burundi, Equatorial Guinea, Mauritania, Congo, Democratic Republic of the, Congo, Republic of the, Western Sahara, Malawi, Comoros, Angola, Algeria, Benin, Tunisia, Uganda, Zambia, Somalia, Swaziland, Ethiopia, Mozambique, Niger, Tanzania, Namibia, Burkina Faso, Turkey, Yemen, Iraq, Lebanon, Guatemala, Puerto Rico, Saint Vincent and the Grenadines, Netherlands Antilles, Trinidad and Tobago, Anguilla, El Salvador, Dominican Republic, British Virgin Islands, Jamaica, Costa Rica, Haiti, Panama, Virgin Islands (U.S. Hello Digitaleye, Most of the parts for the Skil Model 77 types 14-16 are no longer available.

Skilsaw model 77 vintage