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GB - 19
Test for end play periodically by trying to
move the reel from side to side in the frame. If
there is any movement, end play is present.
1. Loosen the lock nut on the adjustment
screw (7, Figure 17) and (Figure 18),
(inside right end of the reel) and turn
adjustment bolt in 1/2 turn or less. Do
not over tighten as excessive bearing
wear can occur.
2. Test again for endplay. If reel is rotating
freely and endplay can not be detected,
retighten the locking nut on adjustment
bolt.
VERTICAL MOWING UNIT -
BLADE CHANGING
1. To change the blades, remove the
vertical mowing unit from the frame.
Unbolt the (2) hangers (see Parts
Manual) from the frame.
2. Remove bearing from the hangers.
Remove by loosening the bearing collet
setscrews.
NOTE: It is also advised to check the
bearings for wear and replace if necessary.
3. Remove nut from the shaft and slide the
blade and spacer off.
4. Reassemble with new blades. Make
sure you time the blades so they are on
a spiral and so that the blades are
pointed in the proper direction. Check to
make sure there is no side play with the
blades when tightening the nut.
5. Re-attach the vertical mowing unit to the
frame.
BACKLAPPING PROCEDURE
Backlapping is a very important step in
maintaining sharp reel blades on the rear and
wing mowers.
This procedure should be performed when
the reel blades and bedknife become slightly
rounded and the grass cannot be cut cleanly
after adjusting the reel to bedknife clearance
(see REEL TO BEDKNIFE ADJUSTMENT on
page 18).
1. Make sure to adjust the reel to the
bedknife so that the reel is parallel with
the bedknife and light contact is
maintained.
2. Reels must be run in reverse direction to
be lapped. Remove drive belts and
attach a backlapping machine to the
reel. Follow the instructions furnished by
the backlapping machine manufacturer.
3. With reel running, apply the lapping
compound using a 2” or 3” wide brush.
Apply the compound evenly to the
mowing blades.
4. Stop the reel and examine both bedknife
and reel blades to see that the cutting
edges are uniformly sharp. If not,
gradually tighten nut adjuster (see REEL
TO BEDKNIFE ADJUSTMENT on
page 18), and repeat step 3 above until
the proper sharpness results.
5. Rinse off the compound thoroughly with
water to remove all abrasives. Check for
sharpness and readjust the bedknife if
necessary.
6. Check reel adjustment on each mower
and adjust if necessary so that they will
cut paper cleanly across the full length of
the bedknife when paper is held 90° to
the bedknife and pinched when held
horizontally.
Many types of compounds are available for
lapping. However, we recommend a good
pre-mixed water-soluble compound.
Premixed compound saves the time required
to mix, eliminates the waste, and is available
in all grit ranges from coarse to extra fine.
Contact your local Dealer for types and
ordering information.
Figure 18
Locknut
and
Screw
DANGER: Be extremely careful not
to let tools, your fingers, or clothing
get caught in the reels. Use
approved safety glasses to protect
eyes from flying particles and
abrasives.