Snowmobile: it should be all properly and have in stock: Shovel; Tow rope; Candles + oil + keys (on snowmobiles, on which it is possible to replace); Spare belt variable speed driver; Filled thermos (1 liter); Hatchet \hacksaw; Tara under gasoline.
Personal equipment: Cup + mug + spoon; Knife; Sleeping bag; Tourist rug; Thermos; Matches / lighter; Hygiene items (toothbrush, toothpaste, napkins, toilet paper, etc.); Headlight; Snowmobile clothing, commensurate with weather (unpredictable) conditions; Own small stock of food, taking into account individual preferences; Headlamp + spare batteries; Spare gloves, spare clothes + spare glasses.
Group equipment: kettles + burners; Food supply for all travel time; Tent for all participants of the trip; Oven for heating tents; Lighting; Axes average 2 pieces; Chainsaw with spare chain and fuel.
Addition: it is desirable that all the equipment in time of movement is located on the same vehicle. If this cannot be done due to the specifics of the equipment and participants, then in this case it is worth taking a sled with a snowmobile. During movement, they, to a certain extent, create difficulties when climbing up the hill, moving into deep snow, as well as moving along the tracks and possible frost.