The Briggs & Stratton engine company founded in 1908 owns and makes Simplicity snow blowers. These blowers include the four-cycle single-stage snow blower, the dual-stage snow blower, the large-frame dual-stage snow blower, and the Simplicity Signature Pro Commercial Duty dual-stage snow blower.

A two stage snow blower will blow snow further. I would get let a 8 hp or longer to make sure it can handle the wetter snows.

Can I get a manual for a Spirit 523 Snowblowwer 2 stage 5hp

A two stage snow blower has the auger up front that moves the snow into the paddles that throws the snow. A single stage just has paddles, no auger.

model 450.