Missing part especially modification section.
http://www.sohc4.net/cb500-manuals/CB500 SB-4 (07/26/71) - Modified Clutch & Shifting Mechanism
CB500 SB-5 (10/28/74) - Modifications to Prevent Excessive Oil Consumption
CB500 SB-9 (08/11/76) - Modified Clutch Adjuster; CB500,K1,K2
My engine are stripped down already and wait for primary chain, so really want to get some mods.
Thanks.