I have found such combustion analyzer movie on youtube:
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feature=related I have a question. Shall it be enough for home DIY periodic maintenance ? I pay $200..$300 each time I call service but this device is for $200 on Ebay. What do you think? This is manual:
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I simply don't want to spend money for contractors. I know how to replace nozzles, adjust pressures, clean..... Please advice