The thesis presents the improvements of the design and hydraulic system of a mini-hydraulic snow groomer, appropriate for grooming smaller ski slopes and trails for cross-country skiing. The light and narrow construction allows easy transport with a car trailer without a trailor brake, but it is recommended. We also advise the use of winter tyres on the vehicle and the trailer. The main purpose of the improvements was to eliminate the problems, which have occurred on existing prototypes, improve the safety of the driver and use optimal components regarding the price, weight and performance. The calculations showed that the mini-hydraulic snow groomer with the improved design, hydraulic system and all attachments can theoretically manage slopes up to 30°, where as the same groomer without attachmnets (a plough and a tiller) can groom slopes up to 46,9°.
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