I guess the first thing that comes to mind is where are the shear pins snapping then the next thing is how soft are your shear pins and then are the problematic ones in the in the cross augers or the impeller ?????????
No one makes a 2 stage unit with a slip clutch as it would stall constantly.
Its going to depend on what YOU really want; Reist makes 48" single stage snow thrower for 4,000.00 Canadian than can be front or rear mounted but you would have to buy a front mounting kit for your
B7610.
With the Canadian dollar being weak it would be worth the phone call to Elmira, Ontario to ask about the series 1000 for your
B7610 as it is has a final drive that is chain driven for these single stage snow throwers
I will tell you that it would be better for your three point hitch mount though as you have more usable torque off the 540 PTO.
A faster way to do this NOW is purchase a motorized Bercomac UTV snow blower for your
B7610 and just attach it to the plow with a little welding for the 2 lower mounts on the snow blower and add another mount for a shackle to attach achain to the bercomac to let the plow blade lift it.
I would get a price for the series 1000 blower for your machine with the mounting hardware and also look at the bercomac units as you can buy a larger 2 stage with a big honda V twin-6K+shipping
Then just price the 2 units and decide how much room you have to store the bercomac in the off season.
With NAFTA all you have to do is stop at the border crossing and ask to have the 8% ontario sales tax refunded to you when you show them your receipt and passport for ID.
BUT in saying that the Canadian sales tax will no longer be deductable for a business expense.
You just might need a stronger shear pin in the scheme of things as they come in various hardnesses.
Some folks just take a bolt and partially hacksaw through it I got so fed up with my JD junk 44 inch snow thrower that I just bought bolts and nylock nuts for it. If I have to replace a gearbox on this thing or one auger its almost 700 dollars and for that I can buy a another walk behind single stage Toro.
Every time I lost a drive belt it was $140 and I did not bother mounting it this year but I found a better supplier for V belts for 1/6 the cost anyway. JUNK.
Why they(bercomac) have no interest in building a single stage snow thrower I will never understand.