How was it different from the last use?
Think back to when it cleared well. Was the snow similar? Did the drop in output happen all at once or over several uses? A change from powder to heavier snow belongs in the comparison, though it won’t settle whether the machine needs work.
Throwing distance alone can’t identify the cause. Describe the clearing across the front as well. If one side leaves snow behind, mention that rather than describing all of the output as weak.
Send the description with the model
The model lets the repair person check which clearing system they’ll actually be looking at. Explain what you saw on the last use. Don’t reach into an opening, recreate a jam or run it again for a closer look.
When asking about an assessment at home, mention the clearing problem before agreeing to a visit. They still need to take on that kind of work as well as come to your address.
The technical and safety advice in this draft still needs to be checked against the manufacturer’s instructions by a qualified reviewer. Follow your machine’s manual.
About the review process