Reelmaster 5010 Series
Cutting Units (Rev. C)
Page 7 -- 15
Backlapping
DANGER
TO AVOID PERSONAL INJURY OR DEATH:
D Never place hands or feet in the reel area
while the engine is running.
D While backlapping, the reels may stall and
then restart.
D Do not attempt to restart reels by hand or
foot.
D Do not adjust reels while the engine is
running.
D If a reel stalls, stop engine before
attempting to clear the reel.
D Reelmotorsareconnectedinseries:rotating
one motor causes rotation in other motors.
1. Positionmachine on aclean andlevel surface,lower
cutting units,stop engine,engage parkingbrake andre-
move key from the ignition switch.
2. On all cutting units, make initial reel to bedknife ad-
justments appropriate for backlapping.
IMPORTANT: Do not attemptt o rotate the direction-
alvalvelever onthehydraulicmow controlmanifold
when the engine or reels are running.
3. Raise seat, locate hydraulic mow control manifold
and rotate directional valve lever fully to the R (backlap)
position(Fig. 17).Rotate flow controlvalveknob toposi-
tion 1.
4. Start engine and run at low idle speed (1150 to 1350
RPM).
5. Press PTO switch to engage and move RAISE/
LOWER--MOW controlforward tostart thecutting reels.
6. Apply lapping compound to cutting reel blades with
a long handled brush (see Special Tools). While back-
lapping, occasionally move brush across reel to distrib-
ute compound.
CAUTION
Be careful when backlapping the reel because
contact with the reel or other moving parts can
result in personal injury.
7. Tomakeacutting unitadjustmentwhilebacklapping,
turn reels OFF, shut off engine and wait for all machine
and cutting unit motion to completely stop. Then, after
cutting unit adjustments have been completed, repeat
steps 4 through 6.
8. When the backlap operation is completed, shut off
engine and rotate directional valve lever fully (90
o
from
the backlap position) to the F (forward) position. Also,
rotate flow control valve knob to correct mowing posi-
tion.
9. Wash all lapping compound from the cutting units.
10.For a better cutting edge, run a file across the front
face of the bedknife when the lapping operation is com-
pleted. This will remove any burrs or rough edges that
may have built up on the cutting edge.
NOTE: Additional instructions and procedures on
backlapping are available in the Toro General Service
Training Book, Reel Mower Basics (part no.
09168SL).
1. Mow control manifold
2. Rear directional lever
3. Rear flow control
4. Front flow control
5. Front directional lever
Figure 17
1
2
3
4
5
TO BACKLAP
TO BACKLAP
FRONT
Figure 18
Relief Angle
Front Angle
Top Face
Front
Face
Remove
Burr
Cutting
Units
