I have a Brinkmann vertical smoker. Even at the lowest burner setting, the smoker is almost 300 degrees. How can I get the burner to set at a lower flame intensity?

SOURCE: Brinkmann smoker

Here is a link for your manual. This should tell you everything you need to know. You can download it for free by clicking on the floppy disk icon and save as.. just put it some place where you know where it is or you can print it out. If this solves your problem, PLEASE rate this as fixed. If you need more help just add a comment and I'll be happy to help you further. Thanks and have a nice day.
http://www.brinkmann.net/Docs/Pdf/810-5290-C.pdf

SOURCE: brinkmann upright smoker not hot enough!

i am having the same problem. can get it above 200 degrees. i have read that you can drill holes in the charcoal bowl to increase the airflow to the charcoal. should have done that myself before i started smoking these ribs..

SOURCE: Low flame

Solution #1 is correct. If your regulator is / was good, then you would most likely have a leak in a line or fitting - and the regulator has properly restricted or stopped gas flow as it's designed to do for obvious safety.

However a very common leak is the main plastic tank coupling which renders the whole regulator and hose assembly useless.

Quick fix, go to Wal-Mart and buy a $20 replacement regulator which comes pre-fitted with hoses and couplings. Get the dual or single hose depending on whether you have a side-burner or not.

Voila! Your good to go a few more years.

SOURCE: My grill does not heat beyond 300 degrees.

Hello,

Check the excess flow safety device, which is part if the barbeque to cylinder connection, may have activated. To reset the excess flow safety device turn all burner control knobs and the cylinder valve off.
Disconnect the regulator from the cylinder. Turn burner control knobs to high. Wait at least 1 minute . Turn burner control knobs OFF. Reconnect the regulator to the cylinder. turn cylinder valve slowly. I HAD THIS PROBLEM JUST LAST NIGHT AND FIXED IT RIGHT THEN.

SOURCE: smoker will not reach heat of 250 to 300 to effectively smoke meat

I have heard that the "new" propane tanks have a saftey valve that closes if they are opened too quickly, try opening the valve very slowly. When you say it has been cleaned that means you have checked the venturi and the burner for spiders?