Snow Blowers

I purchased a Husqvarna 12527HVX two years ago. Last winter, I lost forward and reverse drives and had it repaired (cost out of pocket) and then just the other day, when there was 14" of snowfall with 2 1/2 ft. drifts, I lost the forward and reverse drive again. I cannot find my repair manual to check if I have a problem with the belt or linkage. How can I get a copy or photo copy of the portion of the repair/replacement manual to check it myself to alleviate another costly repair. I assume its easy to check and replace and I am capable of doing it myself, but would prefer any guidance before starting on my own.