Mark DiPietro

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In The Shop: 4 Speed Transmission

4 SPEED TRANSMISSION Throughout the coarse of a year, we remove, disassemble, and repair an abundance of Harley Davidson transmissions. The majority of the gear boxes we open up are... View Content

In The Shop: Ironhead Sportster Fixes

1973 IRONHEAD SPORTSTER We see our fair share of Ironhead Sportsters every year. After many years and many hands; most of the time these bikes come in various states of... View Content

I was riding to work a few months ago, and when I put on foot brake on it stuck in the applied position. I had physically reach down and pull... View Content

Evo Transmission Trouble

My ’95 Ultra Classic is getting up there and I’ve replaced a lot of parts, but one I’m having trouble with is the backer on the Gear Shift Assembly. It’s... View Content

Drain Plug with Metal Shavings

I have an '07 FLHT. I just changed the fluids. When I removed the transmission drain plug, I noticed it was covered with metal shavings. It has over 55,000 miles,... View Content

Bike Turns On and Lights Turn Off

I turn on my bike and the headlights, tail lights, and fog lights go off. I have a 1992 FLH Electra Glide Ultra Classic. Any idea of what is going... View Content

In The Shop: Blown Evo Cam Bearing

BLOWN EVO CAM BEARING Replacing the Shovelhead in 1984, the Harley Davidson Evolution motor was produced until 1999. The Evo is known to be a very durable, dependable, and versatile... View Content

In The Shop: Inner Fairing Bracket Repair

INNER FAIRING BRACKET REPAIR A very common issue that we see on a weekly basis is broken fairing support brackets on FLHT & FLHX model Harley Davidsons. These poorly designed... View Content

In The Shop: Primary Chain Tensioner

Hayden M6 Primary Chain Tensioner Installation The Hayden automatic primary chain tensioner has been around for many years. In fact, there were Shovelhead and Evolution Big Twins running auto primary... View Content

In The Shop: Panhead Valve Inspection

We work on hundreds of Milwaukee Eight, Twin Cam, Evos, & Shovelheads throughout the coarse of a year. We certainly do not see as many Knucklehead or Panhead Harley-Davidsons roll... View Content

Old Bike Torque Specs

I am changing my fluids, and I would like to know what to torque the various fittings at: the three derby cover screws, the primary drain plug, the oil tank... View Content

How Do I Replace the Ignition Switch?

How do I replace the ignition switch (key area)? Via Email First, you need to remove a small button head allen. You will need either a 5⁄32, or 1⁄8 allen... View Content

I have a Stage 1 and 255 cams. I paid for a dyno tune-up, which only took 30 to 45 minutes. Did I get what I paid for—$450.00? (Premium member,... View Content

Should I Buy New Fuel Injectors?

After installing Cobra pipes, and a K&N air filter (I haven't picked out a remapping gizmo yet), what do you think of installing new fuel injectors that put out about... View Content

Lost Speedometer

On the way back at the end of a run today, the bike's speedometer stopped working, and shortly afterward the bike shut down. I turned off the ignition switch for... View Content

Evolution Solenoid

Can you show me how to change solenoid on 1993 HD 1340? Via Email The related videos below cover the complete rebuild of your starter. Related Fix My Hog Videos:... View Content

In The Shop: Used Choppers

We're all familiar with the old saying; "looks can be deceiving". Often is the case with older Choppers from the era of Orange County Choppers and other TV shows that... View Content

In the Shop: Swingarm

There are a number of areas of a Touring model Harley Davidson that will need to be addressed once the motorcycle has acquired an excess of 80k miles. Topping the... View Content

In The Shop: Overseas CV Carb Issues

We have been seeing an influx of Chinese made CV carburetors In The Shop (pics 1 & 2). At first glance, these carburetors look nearly identical to a stock Harley... View Content

In the Shop: Frame Swap

Distracted driving is the cause of many motorcycle wrecks every year. Seems like riders are continuously dodging cars, trucks, injury, and death! Recently, one of our regular customers was in... View Content

In the Shop: XL Splitting Cases

In our Sportster Buyer's Guide video, Mike reminds us that in 2004, the Sportster engine, crankcase, and transmission went through considerable changes. The most noteworthy change is that there is... View Content

In the Shop: Twist Grip Sensor

Twist Grip Sensor One of the most popular upgrades for Harley Davidson owners is handlebars. Handlebars are typically charged for better comfort, for style, or for a little bit of... View Content

In The Shop: Clutch Spring Plate

Harley Davidson Clutch Spring Plate Starting in 1991 until 1997, Big Twin model Harley Davidsons used a spring plate (37977-90) in their clutch pack. Sportster models used the same spring... View Content

In The Shop: Wheel Bearing End Play

WHEEL BEARING END PLAY If you own a Harley Davidson that has wheels with conventional wheel bearings, it is important to know how to check, set, or correct wheel bearing... View Content