It may be time to repair the manual gearbox in the presence of the following symptoms: gear shifting problems, poor acceleration, jerking or a burning smell when changing gears, and so on. The manual gearbox repair procedure can be as follows: carry out a visual inspection, drain the oil from the gearbox, after which remove the wheels and CV joints (front-wheel drive vehicles) or the cardan shaft (rear-wheel drive vehicles). Next, disconnect the gearbox from the engine and support pads. Inspect the manual gearbox and check such unit elements as the gear shifter, shafts, clutch, and gears. Replace all worn-out and defective parts.