Welcome to the Tom Did It channel.
In this video I tune the VHSB34LD carburettor. The biggest change is the installation of a new K21 needle which leans out the midrange fuel mixture.

Carb setting before tuning:
162 main jet
K57 needle (top clip)
B36 pilot jet
Air screw 2.5 turns out.

My new tuned leaner carb setting are as follows:
160 main jet
K21 needle (3rd clip)
B35 pilot jet
Air screw 1.75 turns out.

Video time stamps:
0:00 K21 introduction
1:03 K21 needle dimension
3:22 GoPro audio mod
3:22 First start in months
6:30 Test run 1
10:55 Carb adjustment
16:35 Test run 2
20:15 3rd & final test run
23:16 Plug chop test
26:13 Needle adjustment
29:00 Work bench plug chop

Enjoy!

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