
What's Inside the Black Book
By symptom and by system, with the part numbers. Not an engineer's manual — a 40-year mechanic's notebook.
The V-Twin Engine
Care for the heart of your Harley, Evo to Milwaukee-Eight.
Oil & The 3 Fluids
The right oil, the right level, and the three separate holes done right.
Charging & Electrical
Test the stator and regulator before it strands you.
Suspension & Tires
Pressure, wear, and the right rubber for how you ride.
Cam Chain Tensioner
The $40 part that saves a $4,000 engine.
The 7 Fatal Mistakes
The habits that cut your bike's life in half.
Read Your Own Codes
Pull your Harley's codes with a $20 tool, not a dealer visit.
The Longevity Ritual
The exact routine of riders whose Harleys pass 100,000 miles.







