understand the issues of having and not having counter balance on the rear of tractor make it wheel weights, to liquid filled rear tires, to 3pt hitch (something attached) for weight.
((some machines manufactures state (depends on model numbers), that filled tires are ok, or not ok. double check manual, and it may depend on ok on back but not front wheels))
many tractors do not have backhoes but have FELs.
tractors with backhoes attached to them, generally require FEL's to be on both for counter balance on front, and also a stabilization platform. so you do not damage the front end wheel supports / axles when using backhoe.
air pressure of tires may need to be changed. "highest allowed pressure" tends to be least amount of traction on dirt. and a lower pressure in tires = more traction. but heavier weight, may require more air pressure in tires to keep tires on the rim. i bring this up. because i have done it a few times before. lowering air pressure in tires, and then doing FEL work and looking down and seeing what looks like flat, due to so much weight in the bucket. and then vice vs on rear tires. (forgot to put more back in tires) DOH!
the operators manual should cover FEL counter weight balance, and tire pressures pending on weight and use.
shop manual = covers tearing stuff apart and putting it back together and diagnostic stuff.
parts manual = simpler part diagrams than shop manual, and shows parts only
operators manual = check fluids, were to grease stuff, safety issues, maintenance schedules, what lever / button does what. and overall general use of tractor.