Ok on principle, I'm not going to answer your question. Why? Cause I can't see the point in having a "Tricks and Tips" section where the poster is asking a question. The only reason I can see to have a separate section here is if the poster is offering a trick or a tip that they have come up with. Otherwise, why have a separate section? Put your question(assuming it is about a SOHC4) in the "SOHC4 bikes" section where there is a much larger readership . . . . .
Ok I lied, what bike are you asking about?? Somehow I remember you having a 77 or 78 750?? If so, download the factory manual here and it should have all the specs you need.
http://www.mediafire.com/?5ttzdg9yyuzIf its not a 77/78 go to the FAQ section and look under "manual FAQs" and hopefully find the manual for your bike . . . .