fuel leak from injector on shenniu 245

if the tractor is running well try tightening any fittings or replace that injector or what ever fittings needed ,but as long as you do not mess with the injector pump I do not believe that any calibration required

Like David said, simply tighten the fitting nuts.

The only time some injectors will need to be calibrated is if they are taken apart by a novice and the shims get mixed up.

The only time a fuel injection pump needs to be re-calibrated is when the barrel and plunger assemblies have been disturbed, or removed and disassembled. It should be noted however that periodic fuel injection pump rebuild and re-cal are part of a scheduled routine maintenance at around 15 – 20,000 hours with good maintenance practices.