2006 Yamaha Big Bear Float Setting

[psychodad]

Just rebuilt a 2006 Yamaha Big Bear carb for a friend and would like to double check the float height before I give it back to him  Anyone have a manual they could look it up in or a really good memory. 

Thanks

Jim

[psychodad]

Oops,, it's a 400 Big Bear.

[Gwbarm]

If it is an original Mikuni Carb:

Float height 13mm .51 inches

● Measure the distance from the front mat- ing surface of the float chamber (gasket removed) to the top of the float

[psychodad]

Many "Thanks" Gwbarm.

Can I bug you for one more piece of data?  What's the stock air screw setting?  Screw was stuck and in the process of working it in & out, I lost count of the initial setting.  I've seen between 1-1/2 turns to as many as 2-1/2 turns out posted online.  I really don't like working on stuff for other people.  I want it to be perfect but perfection is very time consuming.

[Gwbarm]

Turn the pilot air screw counterclockwise a half-turn at a time, while watching the tachometer. Stop when the idle speed begins to increase, then turn the screw clockwise a quarter-turn. If the idle speed does not increase after more than two full turns, reset the screw to its 2 1/2 turn position; repeat this step and turn the screw clockwise instead of counterclockwise.

 

You don't have to use a tach if you don't have one you can hear when the engine increases speed  it will increase to a point and start to decrease in speed turn it back until its at the highest speed . Then reset the idle speed.

[psychodad]

Thanks again for your help.

[Gwbarm]

Glad I could help!