Mixer won't tilt back

When you have the head lifted up the screw you can see in there from the front in the middle by the hinge is the head height adjuster. You need to set the height correctly now so that FLAT PADDLE just clears the bowl. Unscrew it anti clockwise to raise the head. Once that is done turn the machine upside down on a towel and check that the locking screw on the hinge pin is tight, it\'s right up inside the pedestal.

The screw is purely for adjusting the head height and that is with the flat paddle. If the head is not locking when the paddle is at the correct height then the locking mechanism needs to be adjusted. If you take it to a Kitchen Aid authorised service person they will sort it for you, they will have done heaps of them. Often the solution is with a file, if you go too far there is no going back so best left to the experts.

The KSM5 and the KSM150 are different mixers. They are both 5 quart mixers and use the same gearing and motor. However the bowl design is different. The KSM5 is a 5 quart bowl lift, which means the bowl locks into the arms of the mixer and raises towards the head of the mixer, where the ksm150 mixer is a artisan mixer, which is also a 5quart mixer, but the head of the mixer tilts back and the bowl twists into the base ring to lock into place. These two mixers will take different bowls and beaters.
Thank you,
Colleen
Customer Service
MendingShed.com

I'm in the middle of a bake sale. Not a good time to send back. Also, I think you meant a free Upgrade at no additional cost...

Get a copy of the Repair Part List for your model at Kitchenaid.com
Download a Copy of the Kitchenaid Service manual.

http://www.kitchenaidparts.be/centers/servicemanual/mixer.pdf

Adjust the mixer speeds:
Remove the screw holding the End Cover and locate the three screws from the Control Plate.
All three (2 top left and right, and 1 bottom) must be adjusted.

1. Loosen the lock nuts enough & Turn the 2 top screws clockwise until they cannot be turned
anymore. Leave the bottom screw alone for now.
2. Use a dab of white paint or paper whiteout to mark the positions of the Phillips screws.
3. Plug in your mixer and Set the speed selector to "Stir".
4. Turn each top screw One full turn couterclockwise (alternating between Left and Right)
Keep making one full turn at the time (for both left and right) until the motor starts running.
5. Put your hand near the Agitator shaft and allow it to brush your finger slightly. Use your
watch or clock and start counting the number of times the shaft touches your finger in
60 seconds. The correct count should be 60 RPM (Rounds Per Minute). If it is less
or more than 60, give each screw 1/4 turn counterclockwise or clockwise and start counting
again. Now tighten both lock nuts.
6. Set the speed selector to "6" and turn the bottom screw either clockwise or counterclockwise
to achieve a speed of 180 RPM.

For your reference, the planetary RPM's for the 5-qt. tilt-head Artisan Stand Mixer are as follows:
Stir speed - 60
Speed 2 - 95
Speed 4 - 135
Speed 6 - 180
Speed 8 - 225
Speed 10 - 280

Turn the mixer over and look up where the pin goes through the two pieces. There is a screw there which secures the pin. Tap the pin into position and tighten the screw.

Tegan, sorry to hear you tilt mixer head is drooping and causing rubbing problems with the mixing bowl. This should be pretty easy to fix, if you?ve got a small blade screw driver and a small hex driver (or jewelers screw driver). First, do you still have the K45SS Parts List? If not, you can download a PDF version from the KA website. Click on Customer Care>Locate Manuals & Guides> Enter the 6 character model number (in your case, use KSM90P) and select one of the files that appear under Parts List. Turn to page 4 - Case, Gearing and Planetary unit, which shows the exploded view diagram and locate Illus. Nos. 29 & 30. Page 5 lists the parts as Adjusting Screw and Set Screw respectively. What?s probably happened is that over 12 years of operation, the vibrations from your mixer has caused the set screw to loosen and drop, hence the lower mixer head. Both screws will need to be ?adjusted? to move the head back to its original position. Now the problem is removing the head from its pedestal. Turn to page 8 and gently remove Illus. No. 7, Hinge Pin, with a hammer and pin driver. With the hinge pin removed the mixer head and pedestal can be separated and you should have access to adjusting and set screws. I would inspect them for wear and tear, and replace them, if you deem appropriate. It may take a few trial reassemblies to get the mixer head back to the original factory position, but once there, everything should be OK. I hope this helps! Howard, Burke, VA

Fixed it!!! My mixer had the same problem.  It was a hand-me-down...
Okay, so I lifted the head and looked down into the pivot where there is a screw (looking from the front of the mixer).  I took a flat-heat screwdriver and turned it counter-clockwise.  (It took quite a few turns, the screw came out a few millimeters.)  
BUT when I lowered the head, hurray!  No more paddle rubbing against the bowl!  No more head jumping up and down!  No more wobbling in the "locked" position!  
Try it!

The height of the beater is easy to adjust on the tilt-head model.  Tilt the head back, and look into the pivot from the front of the mixer.  You should see a screw on the hinge.  With a flat blade screwdriver, rotate this screw half a turn counter-clockwise to raise the beater height.  Lower the head and check that the beater does not touch the bowl.  Repeat until the adjustment is satisfactory.  To lower the beater closer to the bowl, turn the screw clockwise instead.

If the mixer is under a year old and you have a receipt, send everything in,beaters, bowls, book, etc, to Authorized Appliance and Repair in St. Louis Missouri and you will receive a brand new replacement or ungrade free of charge. Make sure you have your Name,address & phone number with the unit.