My snowblower won't engage when i press the lever to go

You might find a manual through these folks Murray Riding Snow Blower Parts, Dynamark Snow Thrower and Wizard mower parts (http://www.outdoordistributors.com/Murray/Murray_Snow_Blower/Murray_Snow_Thrower_Parts.html) . Every thrower I have ever worked on needed adjustments from time to time. Is this a rigid rod or a cable or what, there is always some adjustment point on the mechanism to engage a blower.