Question about Hobart D300 Stand Mixer

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D-300 number one gear not working

The second and third gears are all working. Everything is working except the first gear.

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Re: D-300 number one gear not working

Look also for rounded teeth on the gears themselves. Worn tooth corners can cause the gears to become unmeshed, & the shift fork may not be able to keep the gears meshed.

Posted on Jul 18, 2007

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Re: D-300 number one gear not working

You are going to have to get your hands dirty and open the gearbox. Could be a selector problem or issue with the shaft. If you need parts try Hobart themselves or get in touch with Ann at

Posted on Jul 08, 2007

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Hobart a200 first gear not working

slacken the big acorn nut away from the bottom of the planetary and then tighten the lock nut to the acorn nut. When adjusted and secured, the planetary should have a little vertical play, maybe 1/16".
That will stop the second gear driving from friction from being too tight.

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Jeff your almost must be the shifter into must not slide fully into third....check for wear marks on the worm gear....and try running it without the protective cover on to see how it changes from 1st, into 2nd, then third...that mechanisim if not engaging totally in third.

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Hobart D340 mixer will not hit 3rd gear

Check that the gear on the shaft that the clutch gear engages with does nort have a sheared key.

Feb 12, 2010 | Hobart D340-6007 Mixer

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I would say without looking at it a key is sheared or gear teeth are worn on the gear.usually its a sheared key,however if the mixer is older they use a dive key assembly which you would have to replace the shaft.I'm a hobart tech and repair these mixers often,any ? let me know.What is the ml # on the data plate?

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2 Answers

Hobart A-200 First Gear is Having Trouble

If the mixers are older the dive key shaft,spring or key are broken,if they are newer the key is sheared.Also check the nuts near the beater shaft and make sure there not too tight.

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On the bottom of the planitary the part where you put the beater. there is two nuts. one lookes like a Acorn nut and a thin one above it. By the book the top thin one should be finger tight. Not wrench tight. you need a thin wall 3/4" wrench you hold the thin nut with iot and tighten up the bottom acorn up to the thin one and they lack against each other so not to come losse .on some mixers this thin nut tightend down will mess with older parts and bind the centersahft parts.

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1 Answer

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amy, depending on how old your mixer is there are 2 types of clutches for 1st gear.these could be your problems--a key is sheared on the shaft--shaft/gear is broken.the bottom part of the mixer where you put on the attachements is called the planetary,does it look like it has moved down?you could tell if the dough hook,wire whip,ect,ect is hitting the bottom of the bowl.if this is the case its just simply tightening the 2 nuts next to the beater shaft.if this is not the case you would have to dissasemble the transmission.let me know.

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4 Answers

HOBART D 300,SERIAL NR. 94.819 808, ML NR.116 12

hi i work for hobart and these part numbers dont sound have to make sure you have the ml number or spec number to get the correct can call your local hobart branch and they will help you further.

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