Mittler Bros Machine & Tool 400-202 User Manual
400 single speed to variable speed conversion

(636) 745-7757
Fax: (636) 745-2874
Division of Mittler Corp.
P.O. Box 110 Foristell, Missouri 63348
10 Cooperative Way Wright City, MO 63390
\\Mbserver01\engineering\Product\Product Documentation\400 Ultimate\VS Conversion Instructions.doc Rev1 12-16-2005
400 Single Speed to Variable Speed Conversion
#400-202
1. Unpack the boxes and be sure all the parts are included. See the list at the end of these
instructions.
 
2. Unplug the machine from any power source. Remove the switch box from the base plate by 
removing the cover and unscrewing from the base plate.
 
 
 
 
 
 
 
 
Remove 
Cover 
Unscrew 
from Base 
Plate 
3. Remove the Love Joy Cover by removing the two screws. Then loosen the set screws on each
half of the Love Joy coupling.
 
 
 
 
 
 
 
 
 
 
Love Joy 
Cover 
Set Screw
Remove 
Screw 
Remove 
Screw 
Set Screw
4. With someone holding up the end of the motor remove the four (4) bolts holding the motor /
gearbox assembly to the mounting plate. Remove the complete motor, gearbox, cord & switch 
assembly from the machine. Save the mounting bolts to remount the motor / gearbox. 
 
 
 
 
 
 
 
 
 
 
Mounting 
Bolts. 2 
on Each 
Side 
5. Remove the Love Joy coupling half from the spindle shaft if it did not slide off in step 4.
