Does anyone know where I can find a yanmar b22-2b operators manual?

Yanmar TNV Cylinder Head Bolt Torque 

TNV82A
Step 1 = 30.0 Nm
Step 2 = 61.7 Nm

TNV84/88
Step 1 = 41.1 Nm
Step 2 = 85.3 Nm

4TNV94L/98
Step 1 = 49.0 Nm
Step 2 = 103.1 Nm

4TNV106(T)
Step 1 = 88.3 Nm
Step 2 = 188.0 Nm

notify rental company about their equipment

They are wanting more info to narrow down your P#.
Give this site a look. Fuel pumps start on page 44 when you download their catalog. Contact them if you need help.
http://www.fredricksimporting.com/yanmar-parts/

Is there an interlock on the boom that wont allow it to operate if the front blade is not set? There could be an issue with hydraulic fluid, pump or PTO.

I have no idea what a Yanmar is.

Batt probly weak or old

you don't resize the rod ends. you change the bearings size. as for the torque goes, you can find that information in the repair manual for that car

probably not--This sounds like uneven pressure from the hydraulic pump or problems with the drive motors. Check that the hydraulic oil filter is in good condition (not blocked) and have the pressure in the hydraulics checked.. Have the hydraulic controls checked for correct operation. (if electric controls check for voltage problems to the solenoids and if manual check for control valve problems)

cylinder head torque for a yanmar 4tne94 engine in your google browser and a service manual choice will come up.

I believe that you must increase everything. Is not a good idea adjusting injection pump. Will be a great idea,if you get better best answer from directly from the Manufacturer.
Go and get support from them. Will be more efective.
God bless you