Oct 27, 2013 · I am working with mdchamb to rebuild his B43G from his 318. I figured this would be a good opportunity to do a video thread for rebuilding an Onan. I figure it did not belong in the disassembly thread since we are putting it back together. Hopefully these videos are a …

Starter Mounting Before installing starter motor, make sure the starter mounting surface on the engine base is clean and free of oil. To install starter on B43G (Prior to Spec C) and B48G (Prior to Spec E) engines use the following procedure. On these engines starter pinion gear lash requires adjustment and must be checked when starter is ...

Sep 8, 2010 · What is the basic difference between the two engines? Is one better than the other? Are there any difficulties in rebuilding a B43G? Thanks!

Oct 22, 2012 · Hey guys, Does anyone happen to know off the top of their heads if the P218G and the B43G onan twin motors used the same Carb? The look the exact same, but i was not sure if there was in difference on the internal components. Cheers! Jared

May 11, 2011 · The B43G is the only 43 cube motor that used the bigger venturi carb. All B43 and B48 and P216, 218, and 220 series Onan's have the same bore, the difference is the stroke, cam, and heads.

Apr 29, 2014 · Has anyone replaced the starter on a 1986 318 w/ a B43G motor w/o fully removing motor? I have read some post on how to remove motor to replace starter, but I was hoping to just remove the 4 motor mounting bolts and leave the motor wires, fuel lines, choke cables, & driveshaft connected and just...

May 8, 2016 · Couple weeks ago I discovered a hydraulic leak, turned out to be the shaft seal on my charge pump. Research and advice told me removing the engine was the best method to,get at the charge pump, plus it could use a good cleaning and I need new firewall foam. In process of removing engine today...

Feb 9, 2021 · So today I tore into my Onan... It's been running on its last legs and it was time. I pulled the motor removed all the exterior things which I am familiar with from doing valve lash ad,j and head cleanings in the past. I have just a few more things to come apart on the block ie cam,crank and...

I recently bought a 1983 JD 420, it still has the original onan b48g engine with about 2200 hours. The engine starts well,consumes about 2 ounces of oil per hour of operation, does not smoke and is quite strong. I found a rebuilt b43g onan engine for sale which is used for the JD 318 model. I...

Aug 25, 2020 · Dear John Deere enthusiasts, I am in dire need of assistance. I have a B43G Onan in a 318 JD and it has a dash pot on it to I guess assist in idle control?? Now before anybody asks, I just put in a new points assembly and set it to .016” and I have personally rebuilt the motor myself. I...