Operating instructions
CONTACT US AT www.DRpower.com  15 
1.  Remove the Return Springs as described in step 1 of “Greasing The Rack 
and Pinion” on page 13 (Figure 19). 
2.  Pull the Carriage out approximately half way and remove the three Bolts and 
Lock Washers on each side of the Carriage and Rack assembly as you 
support and remove the Carriage Hold Downs (Figure 23). Note the 
position of the Roller Bearings. 
3.  Pull the Wear Plate out from under the Carriage and check thickness. If 
thickness is less than half worn turn Plate over and reinstall. If thickness is 
more than half worn install a new one (Figure 24). 
Note: After Wear Plate Replacement, perform “Carriage adjustment” on page 14 
as you perform the next step. 
4.  Position the Carriage Hold Downs (Roller Bearings forward) and secure 
with the three Bolts and Lock Washers on each side of the Carriage. 
Retighten Bolts to 55 foot pounds with a Torque Wrench. The high torque 
on these Bolts is important. 
5.  Pull the string to position the Spring ends near the Carriage assembly and 
place the Springs onto the Roller Bearing Bolt threads. Cut the string off 
the Springs. 
Aligning the Carriage Spring Roller (When it noticeably pushed to 
one side) 
An adjustment of the Carriage Spring Roller is required if the measurement 
from the center of the Roller to the edge of the Frame on both sides is not the 
same. 
Tools and Supplies needed: 
  9/16" Wrench 
  Tape Measure 
1.  Remove the Return Springs as described in step 1 of “Greasing The Rack 
and Pinion” on page 13 (Figure 19). 
2.  Pull the Carriage out approximately half way and loosen the Roller Arm Bolt 
with a 9/16" Wrench (Figure 25). 
3.  Align the Roller to be equal distance from each side of the Frame edge. 
Note: Adjust the Compression Spring if needed so it is in the center of the Rack 
Teeth. 
4.  Tighten the Roller arm Bolt. 
5.  Install Springs and remove string. 
Replacing the Centrifugal Clutch (If slipping excessively) 
Tools and Supplies needed: 
  1/2" Wrench 
  Dead Blow Hammer 
1.  Remove Belt Guard as described in “Changing and Adjusting Belts” (page 
17). 
2.  Remove the Belts by rolling them off the Flywheels as you slowly rotate the 
Flywheels (Figure 26). 
Carriage 
Spring Roller
Figure 25 
Roller Arm Bolt
Compression 
Spring 
Wear 
Plate
Figure 24 
Flywheel
Figure 26 
Belts
Clutch
Carriage 
Hold Downs
Figure 23 
Bolts and 
Locknuts










