Tech Tips


CB750 1969 – 1977


The question that I often hear people asking is, what type of oil do I run?

A: You want to run an oil (without) “Friction modifiers.” Most modern engine oils use them. They help reduce wear and, in some cases, help the engine run cooler. However, they don’t help the CB750. In actual fact, they make the CB750 shift much worse; in some cases, it causes the bike to drop out of gear. They make the clutch slip and the engine to fall out of gear. Yes the best oil in the world can cause all of these problems. So, the last thing you want to do is put a quart of it in.

Q: Why?

A: The oil coats everything with nanoparticles that are both sticky and slippery, and even changing your oil won’t get rid of them.

Q: Is that why my clutch still slips when I crank in the power or speed shift?

A: Even if your plates aren’t burned and the disks aren’t worn. These will still slip.

Q: How can I fix this?

A: Change the oil back to Honda Pro Honda GN4 10w – 40w and replace the plates and disks.


Replace those old tired points with a new Dyna Electronic ignition system.

The drive chain often goes unnoticed on a CB750, yet it’s a crucial component. Opting for a one-piece chain is highly recommended. While most CB750s in the U.S. employ 420 chains, some Police bikes utilize 530 chains. It’s essential to confirm your chain size before placing an order. Incorrect tension, whether too loose or too tight, can lead to issues. Referencing the manual for precise adjustment instructions is advisable.

CB750 Chain

Version 1.0.0

Product info:
  • RK RX-Ring has two lubrication pools and seal points versus the single
  • RK’s new GBXSO chains offer quality, performance and unbeatable value
  • 8,500 pounds per feet tensile strength

CB750 Shop Manual

CB750 Static_and_Strobe_Timing