The head height adjustment screw is visible from the front when the head is raised. Looking from the front it is right at the back where the machine head hinges on thew pedestal. Clockwise to lower and anti clockwise to raise the head. You want it as low as possible without the flat paddle tinging on the bowl when the motor is running. Kitchen aid also make a paddle with rubber edges, called a scraper paddle. That one wipes against the bowl during operation.
SOURCE: beater doesn't turn
I think this link will help you understand what is needed to fix your mixer.
You will need to purchase a gear. Here is link MarBeck should have it.
You may need to replace some grease. Make sure to use a non-toxic food grade grease.
SOURCE: Replacement beaters
I had an SM100 which did not work when I got it out to make cookies recently. So, I have both bowls available (large and small), beaters, dough hooks, whisks and the use and care book too! I sure will miss that mixer. Contact me at [email protected]
SOURCE: Can't get the screw adjustment to change the height of the bowl
I had a similar problem with mine - the problem turned out to be that I hadn't clicked the bowl into place corectly. If you find the bowl is tilting forward slightly then you probably need to push it into the clip at the back.
SOURCE: Beater rubs bottom of mixing bowl.
JOE:You don’t say if you have a ‘tilt-head’or a ‘bowl-lift' mixer, but you can easily download a PDF version of your Owners Manual from the KA website (http://www.kitchenaid.com/flash.cmd?/#/page/home).Click on Customer Care>Locate Manuals& Guides> and enter the 6 character model number (in your case, use KSM90P)and select the last file listed that appear under Owners Manuals:KSM90PSWW0.pdf (2930.74 KB)and save that file to your PC.You’ll need to have Adobe Reader to be able to open it. Turn to Page 11 and you will find the instructions for adjusting the mixer head height.I have extracted the instructions below:
Beater to Bowl Clearance
Your mixer is adjusted at the factory so that the flat beaterjust clears the bottom of the bowl. If for any reason, the flat beater hits thebottom of the bowl or is too far away from the bowl, clearance
Tilt-Head models
• Unplug mixer.
• Lift motor head.
• Turn screw (A) SLIGHTLY counter clockwise (left) to raise flat beater or clockwise (right) to lower flat beater.
• Make adjustment with flat beater, so it just clears surface of bowl.
If you over adjust the screw, the bowl lock lever may not lock into place.
Bowl-Lift models
• Unplug mixer.
• Place bowl lift handle in down position.
• Turn screw (B) SLIGHTLY counter clockwise (left) to raise flat beater and clockwise (right) to lower flat beater.
•Make adjustments with flat beater, so it just clears surface of bowl.
I hope this helps! –Howard, Burke, VA
If this solution has helped you, please rate it, thanks!.hslincoln
Testimonial: "Thanks to this answer, I was able to fix the problem in about five minutes. I am very grateful. Joe McCutchen"
SOURCE: I have a Kitchen Aid Professional 600, 6QT, 575 W
Hi DASCO474. This is not good... From the symptoms you describe your mixer’s Agitator shaft is dropping from the Planetary assembly. Something has caused the retaining clip and pin to break so allowing the agitator shaft to drop.
Fortunately the inspection and troubleshooting of the inside of your mixer is a DITY capability, particularly if your mixer is out of warranty. Just be sure to have the Parts List manual on hand. If you're lacking one, you can download a PDF version from the KA website at: http://www.kitchenaid.com/flash.cmd?/#/page/home.
Click on Customer Care>Locate Manuals & Guides> Enter the 6 character model number, in your case: KP26M1, and select one of the first two files listed under Parts List (47) (The first file, KP26M1XAZ4.pdf (304.18 KB), is for a -4 series model and the second file, KP26M1XAZ5.pdf (724.41 KB) is for a -5 series with slightly different insides, so make sure you have the correct Parts List manual.)
Turn to pages 4 & 5 entitled “Case, Gearing And Planetary Unit” for the disassembly and reassembly of your mixer, along with all the parts. Locate Illus. No. 28, Planetary Assembly and Illus. No. 34, Agitator Shaft. The parts which hold the Agitator Shaft within the Planetary are Illus. Nos. 9, Retaining Pin and 30, Retaining Clip. I suspect these parts have failed and will need to be replaced. Now the real fun begins!
To get to the Agitator Shaft gear you’ll need the following tools: a regular or Phillips screw driver, retaining clip pliers, and a small drift pin punch and a small hammer. After removing the Gearcase Motor Housing (mixer top) you will need to remove the Transmission Housing (Illus No. 4) and remove all the lubricating grease from the transmission housing and gears. This will allow you to remove Illus No. 7, 8, 9 & 10, Retaining Clip, Bevel Gear, Retaining Pin and Worm Gear Follower, respectively.
Once you remove the Retaining Pin (Illus. No. 9) the Planetary Assembly can be tapped down through the Lower Gearcase Assembly (Illus. No 11). With the Planetary removed, you should find all the parts which slide on the Agitator Shaft (Illus. Nos. 30, 31, 32, & 33) and pieces of the retaining pin, which should be loose in the base of the Planetary.
Besides ordering a new retaining pin and clip, you might want to reorder the Transmission Cover Gasket (Illus No. 6), too. You’ll also need to replace the grease you removed with new grease. Do not try to reuse any original grease as it may have ‘debris’ in it. You should use a food-grade grease that you can order online (although I’ve seen automotive bearing grease used too – your call).
With your mixer apart and the grease removed from the gears you can check for any other unseemly wear and tear on the gears, too.
Here are five potential vendors in no particular order: RepairClinic.com; mendingshed.com; searspartsdirect.com; partstore.com; and Grainger.com (for grease). You should search for ‘food grade grease’ online (although I’ve seen automotive bearing grease used too – your call). Prices can vary widely between vendors, so do some comparison shopping.
Here are some links to several excellent websites that detail the disassembling/reassembly of a KA Mixer. The mixers displayed in the links are different KA models, but the principles are the same.
Between these three websites and their excellent pictures and descriptions and your Parts List manual, you should now be able to completely disassemble, determine what’s wrong, order the correct parts and reassemble your mixer.
Good luck. I hope this helps. Howard, Burke, VA
If this solution has helped you, please rate it, thanks! - hslincoln
Turn screw (A) SLIGHTLY counter clockwise (left) to raise the flat
beater or clockwise (right) to lower the flat beater
2. Check the Beater Shaft (Agitator Shaft) making sure the Retaining ring
is flushed with the surface of the Planetary Assembly
Constant Pulling and Removal of the beaters can cause the Agitator shaft to move
3. If the above two still don't solve your problem, follow the service manual
directions to disassemble the Planetary Assembly and check for loose screws
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