K3 – K6 Harness
Skeeter’s Tech Tips
CB750 1969 – 1977
The question that I often hear people asking is, what type of oil do I run?
A: You should avoid using oil with “friction modifiers” in your CB750. While these additives are common in modern engine oils and are designed to reduce wear and, in some cases, help engines run cooler, they can cause significant issues for your bike. In the CB750, friction modifiers negatively impact the transmission, making shifting much more difficult. In some instances, they can even cause the bike to drop out of gear or make the clutch slip. Surprisingly, even the highest-quality oil with friction modifiers can lead to these problems. Therefore, it’s crucial to ensure the oil you use is free of “friction modifiers” to keep your CB750 running smoothly.
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.
Q: Which oil filter should I buy?
A: Fram CH6009
Q: Which battery should I buy?
A: Yuasa YB14L Hands down they have been great for 51 Years. I have tried others which are not so good.
Q: Which headlight, old school, LED, Halogen.
A: I up graded to the Halogen 7 inch for the old school look. It’s a direct replacement, sort of.
However, it draws more power and when that fuse blows the engine stops running. So, upgrade the fuse from 7 amps to 10 amps.
For gaskets I have used CycleX and have never had an issue for the side covers and head gaskets.
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.

Version 1.0.0
- 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
Yamiya CB750 Harness for K3 – K6
Wiring Harness several of the domestic suppliers are selling “Junk” The guys at Yamiya have good harness.
CB750 Static_and_Strobe_Timing
Dual Front Brake Kit 1969 – 1972