® The CB500/550 page
   Fondly forever five-hundreds



Here is where I celebrate the Honda CB 500/550, a machine I greatly admire. My favorite of all the 70s sohc fours, with the fours themselves my favorites of all Hondas. This bike and I have a lot of history. I owned one at almost the beginning of my career as a mechanic (selling it with over 92,000 miles on) and now near the end of it I am again enjoying one. In between I have seen, serviced, restored, rebuilt and yes--loved countless others (including a few CB550 engine rebuilds for customers the last few years). I will try to put some to-me important facts together for those who appreciate this model as much as I do. Here are some of the things I want to talk about:

  • Should you really put on Dunlop Gold Seal tires?
  • Why was the bike changed to a 550?
  • Is the 500 really inferior to the 550?
  • Is the charging system inadequate?
  • What about silicone brake fluid?
  • Do four-into-one exhausts actually do anything?
  • Does the cylinder head really need to be milled?
  • Did you know there is a carburetor crisis?
  • What about cylinder compression?
  • What about ethanol?
  • How easy is it to install hazard flashers?
  • How critical is the rocker shafts issue?
  • What about replacement 500 clutch pushrods?
  • Where does the rubber washer go?
  • What's significant about the plated rocker arms?



Beware of forums
CB500 facts
Ignition service
Leaky oil pressure switches
The CB500 petcock
Adjusting the voltage regulator
Tires for the CB500
Avoiding bent valves
The primary chain
The truth about compression
The best battery ever
The electrical connectors scandal
Valve recession
Living with the stock exhaust
Carburetor rebuild 71-76
Carburetor rebuild 77-78
Carburetor rebuild kits
Motor oil
The grease fitting
Oil path
Engine rebuild tips
Vintage Honda wire color codes
Planned obsolescence?
A love story
The pilloried PD
"Within Spec"
CB500 Service
Head gaskets that don't leak
Recommended front brake pads
Servicing the clutch lifter
Drum brake danger
The 500 versus the 550
Leaky rockerbox washers
Engine oil secrets
Silicone brake fluid
CB500 likes and dislikes
Proper drive chain maintenance
The aftermarket 4-1 exhaust
Electrical troubleshooting
Video: Easy carb removal
The 60/40 rule
The charging system
Where did the compression go?
Chrome-plated rocker arms
K&N air filters
The grunge ethos
The CB500/550 super-tune
Engine rebuild insights
Less Is More
Fast idle?
Resurrecting a 500/550
Air filter mod
Take this test
The clutch pushrod fiasco
Low performance
The cam cover non-issue
The carburetor crisis
Ethanol: As bad as all that?
Try an onboard ammeter
Cylinders and valves
The 95/50 rule
Easy four-way flashers
Proper clutch adjustment
Electrical deception
Using Sta-Bil
Muffler bulges
Comparing carburetor sync gauges
The rubber washer
Cam chain install tips
Keyswitches
They hate Honda
Milling the head
Form over function
One day it will be exotic
Disc brake squeal
Avoiding exhaust rust-out
The invisible CB500
Thread repair
My love affair with forums
The cam chain's importance
Gasoline and your CB500
What professionals know

How I start my CB500 each season

My CB500's purchase and maintenance

My CB500's winter 2024 maint

My winter 2025 CB500 plans

My CB500 top end rebuild notes

My CB500's gearing



Suggested further reading:
GL1000 page
CBX1000 page
450/500T page


Last updated June 2025
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© 1996-2025 Mike Nixon