Snowblower Chute Flange Keeper Bracket. This chute flange keeper bracket (part number 731-0851A) is for snowblowers.Chute flange keeper bracket 731-0851A attaches the chute to the auger housing and allows the chute to pivot as needed.Wear work gloves to protect your hands when installing t... - Snowblower Chute Flange Keeper Bracket.