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Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: March 17th, 2016, 10:04 pm
by Yoder_Herb
If you look on the bottom of your diffuser, you should have an angle welded to the bottom to reinforce it from warping. This is the heat diffuser the update program is for. The optional 2 piece diffuser is not covered under the update program, nor is it included with the cooker. It must be purchased as a separate optional accessory.

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: March 18th, 2016, 9:03 pm
by pheyevoh
Just checked again...mine is reinforced. Thanks.

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: May 4th, 2016, 10:50 am
by pmcc640ys
I received my new diffuser plate and it warped already at a cooking temp of 450.

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: May 4th, 2016, 1:25 pm
by Yoder_Herb
pmcc640ys wrote:I received my new diffuser plate and it warped already at a cooking temp of 450.


Please send pictures, the serial number and build date to customerservice@yodersmokers.com

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: June 17th, 2016, 7:37 am
by stuuke
Can you pick the diffuser plates up in Wichita?

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: June 17th, 2016, 8:36 am
by Yoder_Herb
They are only available from the Yoder factory in Hutchinson, and would still require the payment of $29.95.

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: September 17th, 2016, 9:37 am
by Norbert
I have a new YS640 and have been using it for only six months with the upgraded diffuser plate. The problem I have is that the plate is warped. There is a twist in the plate. I would recommend that we look into putting another welded piece on the opposite end of the plate to keep the twist from happening. Any suggestions from the gallery?

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: March 15th, 2017, 1:21 pm
by Shamrock Smokers
I have the 2 piece plate but for $30 is it worth getting anyway to replace the standard one.

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: March 15th, 2017, 1:23 pm
by Yoder_Herb
Personal choice for you. I have never used the original plate after I put in the 2 piece. Also, if your cooker is new, you already have the reinforced plate.

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: July 13th, 2017, 7:16 pm
by rfeustel
HI, I too got the reinforced diffuser and, despite never going over 400, it has warped. I just emailed customer service.

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: August 12th, 2017, 7:27 am
by 911 Crazy
pheyevoh wrote:Hello Herb,

New YS640 owner here...my build date shows January 11, 2016....but I received the old diffuser plate. When you say manufactured January 2016, did you mean, AFTER the 11th?



Guess so.

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: August 12th, 2017, 2:23 pm
by Yoder_Herb
As posted above: If you look on the bottom of your diffuser, you should have an angle welded to the bottom to reinforce it from warping. This is the heat diffuser the update program is for. The optional 2 piece diffuser is not covered under the update program, nor is it included with the cooker. It must be purchased as a separate optional accessory.

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: April 26th, 2019, 6:35 am
by Phantom 007
I've had my replaced diffuser (1 piece) for about 1.5 years and I can report back that this new reinforced design warps as bad as the first one I had. I occasionally cook at 400° for one hour (done this about 5 times since getting it replaced) and each time after it cools down, I have to try and bent it back straight again. I now use a piece of metal re-bar to try and keep it straight. Unfortunately for me, this diffuser does not perform as it should, and really never has since new. I bought my YS640 in summer of 2017 and it already had the new diffuser in it at purchase. At this point, I'd suggest to not bother with this plate and just get the 2 piece. Despite the "reinforcement" of it, it still warps like crazy and isn't worth the hassle.

Re: YS480/YS640 Heat Diffuser Plate Update Program (USA only

PostPosted: September 28th, 2020, 11:30 am
by SammyJ
Wow, 2 things,

I bought my unit used in 2012,

I know I do not want to give up the trap door.