rmaynard 17,520 #1 Posted yesterday at 06:47 PM Cleaning out of the shop today I found two used carburetors. One is from my 1996 416-H, the other is from a 416-8 that I stripped for parts. One has numbers 6100 146 0478, the other is 6100 146 0697. Not sure which is from which. Are there any difference they would make one more rebuildable than the other? Share this post Link to post Share on other sites
ri702bill 12,779 #2 Posted yesterday at 07:01 PM Not sure - but if they physically look the same - go with the one that has less throttle shaft wear. 1 Share this post Link to post Share on other sites
Bill D 3,088 #3 Posted yesterday at 07:14 PM @lynnmor. I'd rather rebuild an OEM carb than buy a new aftermarket one. They really aren't hard to clean and rebuild. 1 1 Share this post Link to post Share on other sites
rmaynard 17,520 #4 Posted yesterday at 08:15 PM 1 hour ago, ri702bill said: Not sure - but if they physically look the same - go with the one that has less throttle shaft wear. There is a significant difference between them. The 146-0697 has this on the side: The 146-0478 has this: Share this post Link to post Share on other sites
lynnmor 9,002 #5 Posted yesterday at 08:20 PM The newer one might have an accelerator pump, those aren't favored by many because they run lean and the pump might fail. Look for the three sided cap on the side. Rebuilding is rather easy if you don't need to remove the welsh plug(s). rmaynard beat me while I was typing. The smaller welsh plug hides the idle mixture screw on the accelerator pump models. 1 Share this post Link to post Share on other sites
sqrlgtr 3,694 #6 Posted yesterday at 09:56 PM Yes. I would defiantly go without the accelerator pump one myself. The one without the accelerator pump looks a lot like the 520H carb I rebuilt a while back and they are an easy rebuild/cleanup. I would make sure I got a good USA kit if you can. I tried a chinisuem one but ended up going USA any way time I got done with it, (Gasket just didnt fit right on cheapy kit.) 3 Share this post Link to post Share on other sites
lynnmor 9,002 #7 Posted 21 hours ago 2 hours ago, sqrlgtr said: Yes. I would defiantly go without the accelerator pump one myself. The one without the accelerator pump looks a lot like the 520H carb I rebuilt a while back and they are an easy rebuild/cleanup. I would make sure I got a good USA kit if you can. I tried a chinisuem one but ended up going USA any way time I got done with it, (Gasket just didnt fit right on cheapy kit.) Usually the only problem with these carburetors is debris and there is a good chance that no parts will be needed. I have bought import kits for the base gasket, bowl gasket and welch plugs, the float needles often have sharp corners causing them to hang up. Don't use intake to block gaskets from China. I blast carburetor cleaner with a straw in each hole in the hope that the area behind the welch will be cleared, if I still have problems only then will I remove the plug. I just priced the accelerator pump and carb kit from Onanparts.com, Onan was always high priced but they are now out of control. 1 Share this post Link to post Share on other sites
rmaynard 17,520 #8 Posted 10 hours ago (edited) Thanks for all the replies. I am going to rebuild both and just keep them on the shelf until my Chinese replacement (currently working well) decides to take a dump. Edited 10 hours ago by rmaynard 1 Share this post Link to post Share on other sites
RED-Z06 2,718 #9 Posted 1 hour ago Ive had a couple onans with the accelerator pump, both ran rich at idle, swapped with oem P220 carbs off ebay without that pump feature Share this post Link to post Share on other sites
