Yamaha YD3

This machine was a luxury version of the YD2, with a nice large fueltank (with for the first time the tuning fork logo!), larger hubs and an engine which developed 1 HP more!

 

Framenr. 63Y1323773 comes from the UK and must have been one of the first on the streets in Britain.

 

The YD3 sports as first Yamaha the nice, large front brake, although it is a single cam unit.

 

Yamaha YD3, front brake
Yamah YD3, front brake

 

The rear hub is equally large and looks as if it can do the job properly.

 

Yamaha YD3, rear hub
Yamaha YD3, rear hub

 

The metal two-piece chaincase is fitted with just a few screws and has a ruber inspection hole for the chain tension.

 

Yamaha YD3, chaincase
Yamaha YD3, chaincase

 

The fueltank is nicely chromed, has knee grips and carries the Yamaha tuning forks. This tank was re-chromed 3 times and the inside was "sealed" as the metal was a little porous.

 

Yamaha YD3, fueltank
Yamaha YD3, fueltank

 

Sidecovers are simple metal pressings for the YD3. The earlier YD2 had both metal en plastic covers.

 

Yamaha YD3, sidecover
Yamaha YD3, sidecover

 

On the left the YD3 has a nice integral unit with choke lever and switches.

 

Yamaha YD3, l.h. lever assy
Yamaha YD3, l.h. lever assy

 

On the right the starting button is included in the unit.

 

Yamaha YD3, r.h. lever assy
Yamaha YD3, r.h. lever assy

 

The Yazaki speedometer has the usual warning lights.

 

Yamaha YD3, speedometer
Yamaha YD3, speedometer

 

The simple AMAL type carburetor is connected to the cylinders with an "Y" shaped rubber maniforld. The airfilter is a wire-mesh type. (Covers are taken off)

 

Yamaha YD3, carburetor
Yamaha YD3, carburetor

 

Yamaha's gearchange lever on this model is a convenient heel-toe affair. You can nearly wear slippers.....

 

Yamaha YD3, gearchange lever
Yamaha YD3, gearchange lever

 

For riding I use 1 battery only. Normally 2 6 Volt batteries are used, serial mounted to give the required 12 Volts.

 

Yamaha YD3, battery
Yamaha YD3, battery

 

The regulator and the starter solenoid switch are fitted on the frame behind one of the covers. I do not have the original toolset however........!

 

Yamaha YD3, regulator
Yamaha YD3, regulator

 

Tailight on the YD3 is of a different type, I have never found a new one. The chrome rim is okay, but the lens was cracked once.

 

Yamaha YD3, taillight
Yamaha YD3, taillight
 

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