® 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
✓ Ignition Timing Video
✓ Ignition Timing How-To Book
✓ 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 pinned cam cover
✓ 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
✓ Mistreated crankshaft hex
✓ The 600cc solution

✓ 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 March 2026
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www.motorcycleproject.com
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© 1996-2026 Mike Nixon