Mechanical details of each area of the bike with some maintenance and repair information:

Specifications

Power Unit

Timing Gear

Cylinder

Piston and Connecting Rod

Flywheels

Decompressor

Triumph Carburetter and Handlebar Control

Sturmey Archer Three-Speed Countershaft Gear

Clutch

Gears

The Kick Starter

Lubrication

Starting

Adjustment

Triumph Motor Frame

Triumph Patent Spring Forks

Handlebar and Controls

Petrol and Oil Tank

Lubricating Plunger Pump

Brakes

Tools

Hints on the manipulation and running of the 4 h.p. Triumph:

To Start Engine

Lubricating Pump

Lubrication of Engine

Over Lubricating Engine

Dismantling & Cleaning Cylinder

Valve Removal

Outside of Cylinder

Piston Rings

Removing Gudgeon Pin

Truing Up Flywheels

Valve Timing of Engine

Correct Valve Timing of Engines of Years Previous to 1915-1919

Carburettor and Misfiring

Carburettor Flooding

Carburettor and Testing Compression

Engine Knocking

Broken Petrol Pipe

Footrests

Brakes

Adjusting and Removing Belt

Tyres

To Save Tyre Wear

How to Find Gear Ratios