H

A universal highly calibrated poundometer used for performing precise percussive maintenance. ¹⁾

Harley Davidson International - Sportsters sold outside the United States are sold by HDI.

A process of heating up and cooling down the engine’s internal parts in stages to help insure mating/ sealing of the piston rings to the pistons and cylinder walls. This process is used on a newly built engine and is done as a deterrent against microwelding.

Gear teeth with a slight curve machined to reduce noise better than straight cut teeth ²⁾

A thread repair insert used to repair stripped threads i.e. spark plug hole threads

Term used in a 1967 magazine ad referring to the bead locking screws in the rear wheel on 67-69. ³⁾

A process using sanding stones or other abrasives to rough up cylinder walls after boring to help the rings seal. Also used with finer abrasives to achieve a final clearance dimension

Hooligan ⁴⁾

Goodbye ⁵⁾

High Tension. Describes the electrical circuit from the secondary side of the ignition coil to the spark plug ⁶⁾

This is a technical term that means: hammer to fit, file smooth, paint to match - (milmat1)

A measure of a fluid’s resistance to flow under conditions resembling highly-loaded journal bearings in fired internal combustion engines, typically 1 million per second @ 150 °C.⁷⁾

A system of using liquid to transmit pressure from one place or another as in brake systems and clutches ⁸⁾

Hydrogen treatment of crude oil in order to saturate the molecules and increase stability.⁹⁾

A tool to measure the gravity in a lead/acid battery