YZ 125 k 1983 jetting help please

billyslad
Posts
544
Joined
12/31/2014
Location
GB
8/29/2016 9:40am
Just picked up a 83 YZ and took it out today it kept bogging like it was overdue long to start with so had carb apart and cleaned adjusted the float level which improved it
Can any one tell me what the standard settings are and her sizes and float height ?
Many thanks
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BOX999
Posts
2
Joined
10/1/2013
Location
GB
8/30/2016 3:20pm
Here you go Billyslad

1983 YZ125K - Mikuni VM34SS

Main = 280
Pilot = 60
Needle Jet = Q2
Jet Needle = 6F21
Clip Position = 3
Slide Cutaway = 2.5
Float Height = 23.4mm +/- 1.0mm

Cheers - Rob
1
billyslad
Posts
544
Joined
12/31/2014
Location
GB
8/30/2016 11:29pm
Many thanks Rob
Do you have airscrew turn out I have started with 1 and a half turns out
BOX999
Posts
2
Joined
10/1/2013
Location
GB
8/31/2016 1:26am
billyslad wrote:
Many thanks Rob
Do you have airscrew turn out I have started with 1 and a half turns out
Yes 1 1/2 tuns out is standard Billyslad....

The Shop

6/3/2019 3:12pm
I made a website dedicated to this model, so you will be able to find all the info you want. I have even uploaded the workshop...
I made a website dedicated to this model, so you will be able to find all the info you want. I have even uploaded the workshop manual and factory tech updates.. enjoy...

http://yz125k.weebly.com/technical.html

Cheers,



Thanks for this information, it will help immensely during the restoration of my '83 YZ 125K. I especially like the wrench reports at the end.
1

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