Your engine is 42 years old. Your Phillips side cover 6mm screws are beat up, rusty and the slots are so bad you can hardly get them loosened. Be smart and toss them all. Hex cap screws last an age and look very professional. This brand new stainless steel hex cap screw kit has 29 screws to secure: right cover, valve inspection covers, timing cover, ignition cover, left cover and chain guard. If you went to a hardware store, the same quantity of hex case screws would cost you a whopping $35.00. I know, I checked.
KL owners who care about a professional looking engine use hex cap screws because they look great and will last through many uses--especially the cover over the oil filter.
Note: Case screws are not included. Comes with illustrated installation guide. Contact me at 952-607-6063 or
New 1978-79 KL Stainless Steel Case Screw Kit, 29 pieces
$24.95