I have two Hobart N-50's in need of ground-up (counter-up?) restoration, and I'm having trouble obtaining a service manual. I'll soon be disassembling them, stripping the paint, etc, and getting ready to order parts. They both seem to have good motors, but the transmissions don't look great (and don't work). I've heard that Hobart is worried that home mechanics might get hurt if they attempt to repair the mixers themselves, but if I can restore/rebuild Italian racing motorcycles (and race them), I think I can tackle a mixer. These mixers don't deserve to wind up in the metal recycling bin- help them have a new lease on life!
What a load! If they REALLY cared for consumer's health and well being, Hobart would put out the information as to how to do it right, rather than have folks just tear into the mixers and put the back together any old way.
What they really want to protect is not consumers, but outrageous repair margins.
I'm OK with that, but have the integrity to call a spade a spade.
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You are in for an adventure. The first step is to find the N-50 Service Manual online and download it.
Trouble shifting speeds is rarely a simple matter of lack of grease.
If your mixer shifted before removing the switch plate, then there is a post that shift lever engages which in not being engaged properly.
On the other hand, if that is not the problem, the transmission case must be removed. Shifting gears involves moving the tumbler yoke assembly. If you are extremely lucky the yoke's spring has become detached and re-attaching it will be all that is needed.
Of course the spring will be in place and you will have to deal with all the grease and investigate the cause.
This is a good time to replace the old grease as well.
A good standard 90 wt oil is what is ok for the gearcase. This is an old email from a hobart service tech and they recomend a special oil ordered from them. So you can decide which you want to use. "EXXON SPARTAN EP-150 (6 oz)" in the M802 planetary. Hobart part #102973-13. This IS NOT a food grade oil. If you mixer is leaking you shouldhave it serviced. Service, parts , lubricants and information canbe obtained by contacting your local Hobartoffice in Pittsburgh@ (412) 788-5380. Steve Davis Field Engineer -
Go to www.hobartservice.com, register, then go to select "food machines" in the Product Group, then "mixers"and look for the Discontinued Products, then find the N-50 mixer drawings, they are all there, even the old ones. Look through the "exploded" drawings for your extra parts. It seems to me that the tech who put this together should know if they belong to this mixer or not. Does he work for Hobart? Or is he a repair person who states that he knows how to repair Hobart products. If he does'n't work for Hobart, these parts may have been on his bench BEFORE he looked at your mixer. A true Hobart Tech has access to specs on ALL models and the ability to access the Service Manuals. If you find this solution helpfull, please rate it. ricardok45
I apologize but im unable to answer yours or any others at this time.Ive been hijacked by another user on this site that is dropping my rating.I contacted firstname.lastname@example.org (manager) of this site about restoring my account but has yet to do so.If my request fall on deaf ears maybe if you can email him and explain that its hard to get info on any hobart products and im the only one that is a hobart tech answering questions for FREE!!As soon as this matters resolved i will continue to help people as ive been doing for a year on this site.
if you just had it serviced i would take it back to them.heres the site for an exploded parts view. http://www.hobartservice.com/Manuals/ to repair this yourself is a task if your not familiar with this mixer.i work for hobart and can give you any other info you may need.