TW200 Forum banner

1 - 5 of 5 Posts

·
Registered
Joined
·
14 Posts
Discussion Starter #1
can anyone tell me what are stock jet sizes for an o7. i currently have 128 main and 31 pilot installed. what are stock sizes?
 

·
Registered
Joined
·
7,369 Posts
125 and 31 for 49-state bikes, 128 and 31 for Cali.



Except on alternating Tuesdays during leap years. None of this seems to be set in stone.
 

·
Registered
Joined
·
14 Posts
Discussion Starter #3
125 and 31 for 49-state bikes, 128 and 31 for Cali.



Except on alternating Tuesdays during leap years. None of this seems to be set in stone.


seems odd that cali bikes get richer jetting. i would have guessed the opposite.



thanks for reply..
 

·
Registered
Joined
·
2,409 Posts
I had been running a 130 main jet for several years in my '05 and noticed the spark plug appeared "sooty" (black).



For the past 2 months I have used a 128 main jet. The plug looked better, but it felt like the bike lost a little uphill pulling power.



I put the 130 back in this week, and the lost pulling power seems to be back. I don't know if there is any measurable difference. I just feels better.



I ride in western NC at altitudes of 1,500 to 3,000 ft (occasionally higher).



jb
 
1 - 5 of 5 Posts
Top