DR Power Sprint (1985 - 2000) - Manual (Page 31)

DR
®
TRIMMER/MOWER
™
Assembly & Operating Instructions 25
3. Turn the Mow-Ball
™
Support assembly by hand. It should turn freely, without resistance. If it
doesn't turn freely or you hear a grinding noise, the bearings may be worn and you may need to
replace the bearing housing assembly.
4. Call one of our Customer Service Representatives TOLL-FREE 1(800)DR-OWNER(376-9637)
for information about replacing the bearing housing assembly.
To Remove and Replace the Bearing Housing Assembly
WARNING: Before performing any maintenance procedures, the engine should be stopped
and the spark plug wire disconnected.
Tools Needed:
• 1/2" wrench • 7/16" wrench
• pliers • 5/32" Allen wrench
• you may also need a pulley extractor
To Remove the Old Bearing Housing
1. Remove the Mow-Ball
™
Support
assembly. See page 22 for instructions.
2. Loosen and remove the three bearing
housing nuts and lower the bearing
housing from the frame (Figures 30 &
31).
3. Pull the belt off the pulley.
4. Flip the bearing housing over.
5. Slide the Wagner Anti-Wrap bracket off
the bearing housing. You may need to tap
it to make it slide off.
6. To remove the pulley (Figure 32),
unscrew the set screw from the pulley
with an Allen wrench. Then tap the
pulley to loosen it from the shaft. Be careful not to hit the shaft, as it will expand and make the
pulley harder to remove. Remove the pulley. You may need a pulley extractor.
To Mount the New Bearing Housing
1. Mount the pulley on the new bearing housing, leaving the shaft recessed about 1/16". Secure
with the set screw. You may want to use Loctite
®
242 to keep the set screw in place.
2. Mount the belt around the bearing housing pulley. Be sure the belt is placed on the INSIDE of
the belt guides and that the other end of the belt goes through the belt retainer and around the
engine pulley (page 26, Figures 33 & 34). Also, be sure the belt is on the INSIDE of the idler
pulley #1.
3. Set the new bearing housing assembly into place. Insert the three bearing housing bolts through
the frame, and tighten the nuts (Figure 30).
4. Mount the Mow-Ball
™
Support assembly. See page 23 for instructions.
Figure 32