Carburetor kit YSN (type PHBH30)

The kit consists of the following components:

- Carburetor YSN30
- short throttle rocker
- Conversion kit rope choke
- Needle Dellorto X13
- Atomizer Dellorto AS266
- ND Set Dellorto 3 pieces (48 - 50 -52)
- HD Set Polini 10 pieces (140-158)

With these parts you can tune most smallframe engines perfectly, especially for the 170 everything should be there. The instructions for the jetting can be found in the manual that is enclosed with the cylinder kit.