ti-jean 45 #1 Posted November 25, 2020 (edited) Hi break the main jet at the cleanig of my carb the opening was120 is that the right size ??? I find yamaha motorcycle store and they have alot of same model of main jet what size i sould install because the 120 it was resized thank Edited November 25, 2020 by ti-jean Share this post Link to post Share on other sites
ti-jean 45 #2 Posted November 27, 2020 (edited) Proble is fixe whit a Mikuni main jet no 100.604 size 125 so why peopel haviging trouble to find that kind of Nikki jet Mikuni Carb use the same jet 👍 Edited November 27, 2020 by ti-jean Speling correction i am french Share this post Link to post Share on other sites
Handy Don 14,061 #3 Posted November 27, 2020 Tres bien, @ti-jean. I wonder if Mikuni has jets for the larger Onan's -- the P218 and P220. Share this post Link to post Share on other sites
ti-jean 45 #4 Posted November 27, 2020 (edited) Yes man parts numbre are mikuni no 100.604 large round the head as a 9mm wide 5mm treaded x 7mm long go to that link you will see the size chart good luck ✌ https://www.bikebandit.com/aftermarket-parts/motorcycle-fuel-and-air/carb-kits-parts-accessories/mikuni-large-round-main-jet-kn100-604-4-pack/p/17044 😉 Edited November 27, 2020 by ti-jean Share this post Link to post Share on other sites
Handy Don 14,061 #5 Posted November 28, 2020 Guess you have to be someone who knows both motorcycle and small tractor carburetors! The fixed main jet in the Onan Carb make for a simpler build and maintenance as long at they are very clean. Haven had a need to replace them, but if you break one or are trying to resurect an old unit, this is good info. Share this post Link to post Share on other sites
ti-jean 45 #6 Posted November 28, 2020 11 minutes ago, Handy Don said: Guess you have to be someone who knows both motorcycle and small tractor carburetors! The fixed main jet in the Onan Carb make for a simpler build and maintenance as long at they are very clean. Haven had a need to replace them, but if you break one or are trying to resurect an old unit, this is good info. That is what arrive I broke it Share this post Link to post Share on other sites
ti-jean 45 #7 Posted November 30, 2020 After fixing the surge problem engine run smooth at fast and at idel but now wen i engage the snowblower the rpm gos up but very hight rpm i play with the gouvernor spring etc wen i clean the carb forgot with hole they were on p216g😟 thank Share this post Link to post Share on other sites
lynnmor 7,815 #8 Posted November 30, 2020 3 hours ago, ti-jean said: After fixing the surge problem engine run smooth at fast and at idel but now wen i engage the snowblower the rpm gos up but very hight rpm i play with the gouvernor spring etc wen i clean the carb forgot with hole they were on p216g😟 thank The information you need may be in this thread. The P216 and P220 are much the same. Look at the linkage in the photos to see if it is in the right bend. Share this post Link to post Share on other sites
ti-jean 45 #9 Posted November 30, 2020 38 minutes ago, lynnmor said: The information you need may be in this thread. The P216 and P220 are much the same. Look at the linkage in the photos to see if it is in the right bend. I dud'n bend nothing probleme is i remove the sping i dont remembre witch hole they were now on duty to mutch rmp engine will blow kaboummm lol Share this post Link to post Share on other sites
Handy Don 14,061 #10 Posted November 30, 2020 The positions of the springs and the rods are important. Click on the link the link below with the "this thread" label. There are pictures of the p216 linkages. There are also comments telling how to get them in the correct places. 1 hour ago, lynnmor said: The information you need may be in this thread. The P216 and P220 are much the same. Look at the linkage in the photos to see if it is in the right bend. Share this post Link to post Share on other sites
