The switch doesn't work on my grinder. got new one but terminals are different. is there a schematic for min0022 or 40744 grinder?

In the drive train there are shear pins that are soft enough to shear if the gears are strained. It happens on bread dough if you run the machine too fast or put a piece of bone into a grinder attachment.

Or, sometimes a gear will move. if not correctly shimmed.

https://www.google.com/search?q=Haden+Mixer+parts+diagram

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You can buy food grade grease from kitchenaid or on amazon. I did use the grease from my work. Any grease would do the job just make sure you read the specifications to find the grease that can stand high heat so it doesn't melt while the machine is running.

you probabley bent the switch lever so the little indent on the lever won't stay positioned in the off detent. probabley need new switch lever. part doesn't cost much .not hard to put in if your mechanicly inclined , if not a repair center can do it for you.

If the attachments that you are talking about are the dough hook and the whip, then the red lever is not used to put them in or take them out. The red lever releases the plastic housing on the end of the mixer, which then exposes the mounting hole for the major attachments such as the grinder, sausage maker, etc. You push the red plastic lever, then gently pull off the plastic end of the mixer. It should come off with absolutely no force. Then insert your food grinder or other attachment with the red lever held back. Once the cog on the grinder is aligned with the fitting inside the hole, release the red lever so that the recessed hole on the grinder will become engaged. The Kitchenaid classic stand mixer and the Viking stand mixer have essentially the same set up.

the blade of the jar got jamed, you have to remove the jar shaft and lubricat with any oil and refix it back

Cindy,if it has a screw take it out,grab a flathead screwdriver and work your way around the cap.Some mixers have been painted or just the gunk over the years make the cap hard to pull off.The push button i have never seen on a hobart mixer near the hub.Give me the serial and spec number.

There is no switch. When you have the accesory in the front, the beater section still moves. I suggest that you remove the beater so that there is less possibility for someone to get hurt.

There is a great guy on Gerrard street in Toronto, who can fix mixer grinders and has parts also like breaker/reset switch etc.
The store is called Appliances 220, Ph # 416-778-9908.
Hope this helps.