200A and 202 reproduction
frames back
in stock.

curiousart
Hi Folks,

I have a 425e stove. I've been running it on unleaded fuel, and the first burner runs like a champ, but the second burner is weak, no matter what amount of fiddling I do. It's super clean--I took it to pieces, and cleaned it out with a rifle brush. Any ideas? Thanks...
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Chucker
It is supposed to be weaker than the main burner.

Have you pulled the burner rings and cleaned each one?

If you want your auxiliary burner to have some BTU's, just get a 413. 
Chuck
"Pleasant words are a honeycomb, Sweet to the soul and healing to the bones." Proverbs 16:24
Eye-SEE-C-C Member #1333 -- MilSpecOps #003
"Michigan - from the Ojibwa word “meicigama,” meaning “great water.”
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curiousart
Ah, bummer. Yep, I cleaned the rings, though there wasn't much to clean. It came to me in nearly new condition, even had the original ca. 1978 box.

The second burner is weak to the point of being kind of useless.

Get a 413? This is how the collecting thing gets started [wink] I might just do that. It looks identical on the surface to the 425...different design?
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Mister Wilson
Basically bigger in every way.
John
H.C. Lanterns dealer
Coleman 275 Appreciation Syndicate #2001 A Turd's Odyssey
Canadian Blues #028
Coleman Slant Saver #31
Looking for 6-56 and 6-58 Birthday lanterns.
There's been an alarming increase in the number of things I know nothing about.
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fatherof31970
It shouldn't be that weak.  How many pumps do you have in the tank when you light the aux burner?  Don't be afraid to pump the daylights out of it with the aux running.  And when you took it apart, did you check the connecting tube and clean it out?  Might be a spider web in there.  Also, how tight did you tighten the screw on the burner assembly?  Should only be finger tight.  And Chuck is right if you want power, just find a 413 but your 425 should work better then you are describing.
"Sit tall in the saddle, Hold your head up high Keep your eyes fixed where the trail meets the sky And live like you ain't afraid to die And don't be scared, just enjoy your ride" From "The Ride" by the late Chris Ledoux. Ed, Moscow, Idaho 
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WYSIWYG
are the burners assembled correctly?? as I recall they are different sizes. I think the smaller one goes on the aux side.
John        
One in every public place...

ICCC #1338    IDITOS  #2654
Coleman 275 Appreciation Syndicate. Member #0059
BernzOmatic Appreciation Club #004
Member of CCF  Chromostereopsis  Club
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fatherof31970
Also, what is the relationship to the main knob open to how much do you have the aux key open?  You learn to adjust both the knob and the key to get the right flames.  Try opening both up all the way and see what you get and then pump it up some more.
"Sit tall in the saddle, Hold your head up high Keep your eyes fixed where the trail meets the sky And live like you ain't afraid to die And don't be scared, just enjoy your ride" From "The Ride" by the late Chris Ledoux. Ed, Moscow, Idaho 
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curiousart
Good questions...the last time I used it was last October, but I'll be using it next weekend. I just followed the instructions on the tank, but I'll pump the crap out of it per your instructions. I cleaned every part of this thing. I will definitely check the screw on the burner assembly and make it finger tight...I most likely torqued it up.

WYSIWYG-I'll also check and make sure the burners are correctly assembled. I'm pretty good about noticing how things are assembled as I take them apart, but I'm not perfect. I'll give this all a shot this weekend and report back...thanks!
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Daveofswm
I was thinking about this last weekend. Is it possible to modify the main burner to be equal to the second burner?  When cooking with a griddle one side is much hotter than the other.
dave
Because I am Dave that's why!
ICCC#1328
Coleman 275 Appreciation Syndicate # 0127
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Majicwrench
The griddle thing is a bit of a battle,  really no practical way to make the burners  equal on a Coleman, some other brands the burners are more or less equal (PW)

When using griddle on my Colemans I just shuffle food from one side to the other.

To the OP, Second burner is anemic, but still usefull for things, like the above said, pump a good pressure in font and see.
Keith
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curlyjoe_99
something to try as it worked on my 425F.
compare the two burner ring stacks and if they have a washer at the bottom, put the stack with the smaller inside diameter one on the main and the larger on the right and see if this improves things. No washer? put the smaller diameter rings on the main.

several of the 425 series had these washers and the smaller on the main creates back pressure when run solo and additional pressure for the secondary burner.

hope this helps
Robert (AKA Curly)-- Heart-of-Texas! "Keep 'Em Working"  
MILSPEC_OPS & 275 Appreciation Syndicate Member #9999

In Search of (ISO): evidence of a 220/228 series lantern dated 2/63    

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curiousart
Thanks, Curlyjoe! I'll try that this afternoon.

Best,
Art
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Rocky
The main burner has to be wide open when you use the second burner.  Since it does not have its own separate generator and fuel valve it works parasitically off the main burner.  If the main burner/generator are running a little weak then the second burner will be fairly useless.  Caution should be used if you try to restrict the main burner since too much of a restriction can cause back pressure and the stove to flame out at the air box preventing you from running it wide open.

The 425 I always thought since I bought mine with my Dad back during the great blackout in the 60's was 14,000 btu total output with 7,500 from the main and 6,500 from the secondary when both burners are lit and the stove is running at full blast.

The 413 was 17,000 btu total with something like a 9,000 btu main and 8,000 btu secondary when both burners were running with the stove at full blast.

On both there was just about a 1,000 btu difference between the two burners as they came out of the box.

On both stoves the secondary is at about 85% or so the power being output by the main burner when working up to design specs.
Rocky
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Glen65
I have put two main burners on my 4Ms and a Canadian 414, the solution is to find a restrictor plate with a hole about 3/4", I am not sure the model of stove I took them from but they do seem to be in a lot of the 70s to 80s stoves.
I did this first on a 4M and did a boil test with two identical pots and they boiled at exactly the same time, and when I use a griddle on the stove it heats evenly according to my IR thermometer even on a simmer (secondary burner wide open).
If anyone is interested in more details I can provide more information.
Enjoy 😁
 

Glen65
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StanDahl
If you want equal burners in a Coleman stove, you have to either find a black one (1920's) or get a propane stove.
ICCC Petty Bureaucrat #CMLXII...
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