Looks like a flat face o-ring type fitting. If that’s the case no amount of tightening will stop leak. O-ring needs to be replaced. Mess is likely no matter what. That’s why they make pressure washers. Even if it is a JIC fitting to properly tighten the lower hose needs to be removed for access...
Do you work in the power industry? Standard hardware on heavy equipment till it went metric still is 5/8” bolts are 15/16” tools and 3/4” are 1 1/8”. 7/8” are 1 5/16” and 1” fasteners are 1 1/2”. This whole thread has been derailed by suggestions for larger size tools. Believe me I have been...
When I was still working these wrenches were some of the first ones I would grab when I was in the field working out of a truck. Have a socket and a wrench in one unit = less **** to carry to a machine. By the way mine were Mac and went up to 1 1/8”. Can’t find them that big anymore
I have 2 full sets of combo wrenches up 2” all USA bought 1 or2 at a time from co workers retiring or garage sales. Only bought 1 new a Snap-on 1 1/2. Years ago I think was $100 and thought that was nuts. Most are Mac Snap-on S-K and Williams.
350B?? Those things really vibrate with the 3 cylinder engine. Use locktite on everything. Keep the 4big bolts on rear of transmission case tight. Had one break into once because 2 of the 4 bolts fell out and operator didn’t know