The drive belt for the tracks was fine, but the auger belt was very worn. I cleaned out the fuel system, new oil, new plug all that on the engine side, and inspected the augers & belts. When I got the blower at the start of last winter it had been sitting for a long time (5+ yrs) without use.
I have inherited a 1984 HS70 TA (tracked Canadian version) from a neighbour who moved away and it seems to have a real appetite for wrecking auger belts.
