Hi folks. I SWAP my original B&S 16 hp engine to brand new 20.5 hp Robin-Subaru EH 64, on my Argo Vanguard 6x6 1989 .. It's very powerfull engine fore 6x6, love that power and mobility, but i have same problem with fuel leaking from carb to fuel line. I fixt that temporary, ( install rubber outboard engine hand pump), these is very helpfull fore engibe start. But, fore me it's very strange , because i have electromagnetic fuel valve on my carb. And valve is ok...Very strange.
I recommend every owner ho have old ARGO model swap engine fo Robin Subaru EH 64 or EH 65. i can send photos if somebody need .
Bullet speed is important, but accuracy is Final !