Brian silk
Regular Contributor
Hi there. When you say intake silencer, do you mean combustion, or cold air( opposite end from hot end)? The combustion air muffler would not make the overheat breaker pop, just bad combustion. If it is the cold air intake,is it restricted? Or just dented on the outside? I can't tell you what the temp should be, as I haven't had to measure one in like 10 years, but it sounds about right. Try taking off all the ducting, and try running it. If it now runs, take a real close look at all ducting, in, and output. If it draws air through any type of grill, or mesh make sure it is dust free. If it still blows breaker with ducting disconnected then probably the overheat sensor is bad, on bottom of case near got end. It is in a rubber grommet. Pry it out, and check for dust buildup. Or blow air in the hole it came out of. Try again. If it still blows. Then the sensor might be bad. It should be open circuit. You might have to follow the leads to where you can put a meter in it. If it closes when no ducting us on, then it is bad. Try Roton in Vancouver they might have one. I've only replaced one in 18 years. If it does not close, but the breaker still pops, it is the breaker itself. Should be a three terminal breaker. You can still get the one for the d7l. Which should be the same one. If you disconnect the wires make sure you know which way they go back on! The breaker is not cheap about $150 can. Let me know how you make out. Or call me if you need more details.