Anyone know the Carb Make/Model on the 09 scrambler 500 ho? (pretty sure it would be the same on a sportsman 500 ho)
I want to get a high altitude jet for it

 

Mikuni BST 40 is on the the Scrambler with a stock 155 main jet. The Sportsman is basically the same carb with different internals such as a stock main jet of 152.5 Jetting depends on altitude (8,000 ft,10,000 ft 13,000?? Ask a dealer what jetting you need who is in the area you want to go. OPT

 

8-10k is what I need to jet it for.
I talked with the dealers and they want $80 to jet it so ima do it myself.
I also need to adjust the clutch to accomodate the jet and altitude but not sure what clutch kit I would need.

both together the dealer quoted me about $300 which is more then i have right now but I need to do it so decided to do it as a DIY project.

 

Found this interesting site with this graph below.



Mikuni carburetor operation and tuning

So according to this im looking at about a 135-140 jet for 8000ft

 

here is the factory settings for high altitude jetting 6000ft+ @ 40degree+ 152.5

6000ft+ @40degree and colder 147.5
Clutching @6000+ change weights to 10RH from 10WH.Find them used on Ebay

 

those 10-rh weights are hard to find.
I put in a call to my local dealers but they are about as useless as **** on a nun...

Thanks for the numbers though, at least now i know what to look for.

 

Do you happen to know the weight of the 10-RH weights?
Looks ill have to go after market brand.