Question about Zassenhaus Knee Mill Hand Crank 156 Manual Burr Grinder

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Grinding adjustment tightens as I grind clockwise. Have to stop and loosen it every 10 grinds or so. It takes over 100 grinds to get a full grind. It also makes a different, louder noise than it did.

Zazzenhaus Knee grinder

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dennis bullard

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SOURCE: Grinding adjustments does not stay, but loosens

use a small abount of your ladyfriwenjds nail varnish on the adjustment nut or screw to prevent vibration from lossening it.

Please rate my help++++Thanks for using FIXYA

Posted on May 28, 2010



  • 6 Answers

SOURCE: Grinding adjustments does not stay, but loosens

Looks like a pump problem. If you descale regularly, then the pump might be getting worn out. If you don't descale regularly, run some 1:1 water and vinegar then let it sit without rinsing. But don't run the pump for too long, just a couple of minutes, then let the water with vinegar sit for 4-5 hours, then run the descaling mix again for a couple of minutes, etc., repeating as long as necessary until the unit runs clean.
If you run the pump for too long at a time, this will burn the pump and you'll have to fork 40$ to 60$ for a new one.
If the output doesn't get better with descaling, then the pump is worn and you'll need a new one. It's not that hard to change: just fasten two clips on the tubing et voil?.

It's good to check the O-rings for the needle that controls the debit and change any that have become hard or are flat on the side instead of round. Expresso machine repair shops will routinely charge ludicrous amounts (over 5$) for what is actually a generic 6mm O-ring. It's up to you, but it is possible to find food-grade O-rings that can bear the temperature of boiling water (which is not that high a temperature) for a much better price than that.

Posted on May 17, 2019


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How to install grinding wheels

(1) Check whether the characteristics of the grinding wheel meet the requirements of the use, whether the grinding wheel and spindle size match.
(2) The grinding wheel is freely assembled on the spindle of the grinding wheel and cannot be extruded. The diameter of the grinding wheel is suitable for the spindle and the chuck to avoid too large or too small. Clean with surface, no sundries.
(3) The chuck of the wheel should be symmetrical and the radial width of the pressing surface should be equal. The pressure surface is straight, and the wheel side contact is full, the clamping is solid, prevents the grinding wheel two side to be deformed and even fractured by the unbalanced force action.
(4) The Chuck and the grinding wheel end face should be sandwiched between a certain thickness of flexible material liner (such as asbestos rubber sheet, flexible cardboard or leather, etc.), so that the clamping force evenly distributed.
(5) The tightness of the wheel should be tight enough to drive the grinding wheel not to produce a sliding suitable, not too tight. When using multiple bolts to tighten the hard disk, the diagonal alignment sequence should be uniformly tightened to prohibit fastening bolts along the circumferential direction, or to tighten one bolt at a time. The fastening wheel chuck can only use the standard plate hand, prohibit to use the long spanner or use the Beat method to enlarge the tightening force.

Jul 09, 2018 | Cars & Trucks

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Starter wont turn engine over

Why did you change the starter in the first place? The battery need a full charge for the starter to operate properly, Need year make and model for more help. If the starter is grinding now and wasn't prior to replacement, it may have to be shimmed or the starter could be defective.

Jun 20, 2015 | Cars & Trucks

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Post cleaning the blades are touching

You should call your vendor for service. Especially if this equipment is on loan from them.
*** The following is for information only. Equipment should be serviced by a qualified tech. ****
* has a free download of their manuals.
* Check the parts diagram if you have assembled everything properly. Often people forget the 'button' (looks like a nickel with a dent in it.)
* Perform the following adjustments WITHOUT beans as they will prevent you from hearing to any problems.
* Opening the burrs too wide (turning too far counter clockwise) will have the plate scraping the cover and you get metal flaking along with a teeth chattering/grinding sound. Turn the adjustment several times CLOCK-WISE and try again. If you still get grinding then take everything apart and check for objects in the burr area then reassemble according to the parts diagram. Make sure you have the correct model and diagram.
* Closing the burrs too tight (Clock-wise) will have the burrs touch and lock up together. There is another loud grinding sound but not as bad as hitting the case. Though back it off fast as you will ruin the plates if they over heat.
* Note; Once you get things in range. (No loud metal chatter or grinding sounds. Just a nice hum and whirling sound. The you will need to calibrate the plate. Go ahead and add a few table spoons of beans. Keep it to a very small amount as you will probably end up dumping them (a waste). I use 'expired' or old beans for this.
* Calibration is done by grinding a few beans at a time. You must clear the beans completely before adjusting to the next setting. Keep turning the dial to the fine setting. Keep grinding small doses until you get to the level of grind that matches the finest setting on the dial (usually Turkish grind which is almost a powder.) Adjust this back (Larger) a bit as most people end up burning the beans at this fine a grind. It also takes forever to grind a whole bag, even with only 10 oz of beans. Lock down the adjustment screw once your satisfied with the grind matching the dial.
* Note; If you find the motor trips out often then back off the grinder for a larger (course) grind.
*Finally check with your vendor if your still having problems.

Aloha! ukeboy57

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How do I change parts, i.e. from grinding wheel to sandpaper wheel?

There is a collet type on most rotary type tools. This is located on the end of the tool where the grinding wheel is inserted in the device. The collet has a normal thread pattern. Turn counter clockwise to loosen the collet. Some time the collet gets tightened to toght and then just take a block of wood and gently hit the collet to see if this will loosen the bit.

Mar 14, 2011 | Craftsman Single Speed Rotary Tool

1 Answer

My Solis Maestro takes a long time to grind and no longer grinds for espresso. How do you remove the burrs to clean them? Should they be replaces?

Yes the burrs will wear out. They can be replaced. To remove the outer burr. Twist the bean hopper counterclockwise until it stops. Lift the bean hopper out. There is a cream colored ring with 2 tabs that will lift out holding the outer burr. To get the inner cone burr out is a little more difficult. We use a vice grip and grab the burr, and lock the pliers to it. Then with a quick movement clockwise on the pliers, you loosen it. Then clockwise unscrew the burr. When you install the new burr, it truns on counter clockwise until it stops. Insert the new outer burr. Push down so the tabs will lock in. Install the bean hopper into the correct slots ( 1 large tab and 1 small tab). Twist clockwise to turn on and test. Remember it must be grinding to turn to a finer grind but can be turned to a coarser grind any time.

Jan 24, 2011 | Solis Maestro Electric Burr Grinder

1 Answer

Whatever the setting is at the grind is always fine. What can I do to re-calibrate the grinder?

Grind Adjustment Tools required: Large blade and medium Phillips head screwdrivers In order to adjust the grind, follow these steps (Refer to figure A): 1. Remove all coffee from the hopper. 2. Set selector knob to the finest setting (Espresso or Turkish) depending on the model. 3. Loosen both knob retainer screws in selector knob one turn only. 4. While pressing the bag switch, located behind the spout, press the START button so that the grinder will run during adjustment. 810 model - Press the ON or START button so that the grinder will run during adjustment. 5. With the grinder still running, turn the adjusting screw in the center of the selector knob slowly to the right until a slight clicking noise is heard. Immediately turn the adjusting screw to the left one grind setting. This is the finest grind obtainable. 6. Tighten both of the knob retainer screws. Once the ESPRESSO grind has been set (Turkish for Model 835, 875, 890), the other grind settings will automatically set correctly. 7. Press the STOP or OFF button. IMPORTANT: Always be sure the grinding burrs are not touching while the machine is running on the ESPRESSO/TURKISH setting. Otherwise serious damage to the motor may result. dr_buckhead.png

Nov 19, 2010 | Grindmaster 810 T Electric Burr Grinder

1 Answer

Just bought a used one, seems like the espresso grind is pretty course, is there an adjustment I can make?

To adjust this grinder turn the adjustment nob to the finest setting (ESPRESSO or TURKISH) Locate 2 small set screws on the adjusting nob. Loosen these screws (do not remove them) about one full turn. Start the grinder and, with it running, VERY SLOWLY and GRADUALLY, turn the CENTER adjustment screw clockwise until you begin to hear the burrs begin to touch (whirring sound). Back off the center screw about 1/16 of a turn, shut of grinder and re-tighten the set screws. Then try the grind on DRIP or there about for brewed coffee.

May 21, 2010 | Grindmaster 495 Electric Grinder

1 Answer

With the dial turned to "Turkish" I still get a very course grind. How to adjust/fix?

On the adjusting knob there are 2 set screws (outside of the center) and an adjustment screw (the one in the middle). First make sure the LARGE screws on the side of the SELECTOR plate are tight. Start with the selector on Turkish, with the grinder OFF loosen the set screws about one full turn each. Leaving the selector on Turkish turn the grinder on and gradually VERY SLOWLY turn the center screw clockwise. Eventually you will hear the burrs inside touching. After they touch back of the center screw about 1/8 of a turn. Tighten the SET SCREWS tight as they may allow the grinder to go out of adjustment if not tight. Test the grind with very little coffee and throw those grounds out. Then grind and brew! If these grinders are adjusted too fine you may have problems with the grinds not falling and may back up.

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2 Answers

Car squeals when i turn the wheel, and grinds. sometimes the power steering does not work at all. Just got a new alternator installed, this problem was not there before. it is a 2003 GMC ENVOY XL SLT

Check to see if the belt(s) are properly tightened. May have loosened up after the alternator changed.

Or, the P/S pump is failing. The grinding could be the bearings inside the P/S pump.

If the problem was not there before the Alternator was done, I would take it back, and ask.

Apr 05, 2010 | 2002 GMC Envoy XL

1 Answer

Can this be fixed??? my grinder stopped grinding ????

Try to remove all coffee beans first by hand, then s*ck all remaining with a vacum cleaner.
Undjust the grinder to more gross coffee.
Try to work back again the grinder. If it is working then adjust back again to your previus postion but remeber that you can go back again one step at the time so the grinded coffee wil not blocked the grinding plates.
Good luck

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