The best way to jet a bike is by seat of the pants, and reading the spark plug burn.

i can do neither, but I can put you in the ball park.

Before going into, or adjusting the carburetor, the following should be checked ...

1. clean air filter

2. de-carboned exhaust pipe (clean and free flowing)

3. NGK B8ES ... or equivalent spark plug

4. Points/timing to factory specs

5. air leaks ... around crank seals and the carb's mounting flange

~ Remove, disassemble, and clean the carb

~ If your vin number is above #003000, purchase a small carburetor O-ring ... part number 93210-04121 >>> if vin is below # 003000, order O-ring # 93210-06120

Because air density is affected by altitude, temperature and humidity, there could be a range of jets and adjustments needed to cover the various conditions.

At 5300 feet, here are my suggested starting points:

~ Winter from -10 to 40 degrees . . . stock 150 main jet, air screw 1 1/2 turns out

~ Spring/Fall from 40 to 60 degrees . . . 145 main jet, air screw 1 3/4 turns out

~ Mild Summer from 60 to 80 degrees . . . 140 main jet, air screw 2 turns out

~ Severe Summer between 80 and 100+ degrees . . . 135 main jet, raise needle clip to 2nd slot, 27.5 pilot jet, and turn air screw out 2 1/4 turns from seated position

Replace the old jet setter O-ring with the new one you acquired, put carb back together, and install

Some small adjustments may be needed to dial it in to the ideal state of tune

Jet part numbers . . .

135 main ... 137-14143-27

140 main ... 137-14143-28

145 main ... 137-14143-29

27.5 pilot ... 193-14142-27