OzVMX Forum

Marque Remarks => Yamaha => Topic started by: pancho on December 30, 2015, 02:36:50 pm

Title: YZ80?
Post by: pancho on December 30, 2015, 02:36:50 pm

 My grandson has this 80cc Yamaha monoshock which is a hand-me-down from his sisters.
 It has no compliance plate, has '80cc' stamped on the reed block. I assume it is a YZ80?                     
Hasn't been run for about 5 years.
I have the job of getting it running and a bit of tidying up.
Where should the frame No. be?
What year?
Needs an air box etc, other odd bits.
As I suspected the reason for no start was crankcase full of stale fuel, from leaky fuel tap. Put some fuel in the tank, aero start in the carby, after a couple of pushes it fired up with a cloud of blue smoke obliterating the scenery. I turned  the fuel off removed and plugged the dripping fuel line till the smoke and engine stopped. All good. Can I get fuel tap seals, muffler, seat cover ignition kill switch and stuff easily for this? cheers pancho.

Title: Re: YZ80?
Post by: Viper666 on January 02, 2016, 10:53:58 am

What's the first 3f the engine number?

Title: Re: YZ80?
Post by: pancho on January 12, 2016, 04:13:12 pm

 Engine no prefix 2X6

Title: Re: YZ80?
Post by: TT5 Matt on January 12, 2016, 04:34:12 pm

its a yz80E

Title: Re: YZ80?
Post by: rocketfrog on January 13, 2016, 09:35:22 am

YZ80E = 2J5 1978, First Mono YZ80.

Title: Re: YZ80?
Post by: ghostrider on January 13, 2016, 02:32:09 pm

 2x6 =yz80f 1979 model

Title: Re: YZ80?
Post by: skypig on January 13, 2016, 04:28:17 pm

One way to pick an E from an F is the swingarm.
E has one brace
F has 2

Title: Re: YZ80?
Post by: mudguard on January 17, 2016, 08:35:09 am

Ghostrider is correct. I had a 1978 YZ80 E as a kid. The E model had a 5 speed gearbox and the F model had a 6 speed gearbox.