Cutting Height; Reel Bearing - Jacobsen Super LF 1880 Dealer's Manual

5 ADJUSTMENTS

5.13 CUTTING HEIGHT _________________________________________________________

Note: Always make the reel to bedknife adjustment
before adjusting height of cut. (Sections 5.11 and 5.12).
1. Raise mowers to transport position then engage the
parking brake, stop engine and remove key from
ignition switch.
2. Set desired cutting height on the gauge (D).
a. Measure distance between the underside of
screw head and gauge block surface (E).
b. Adjust screw (F) to obtain desired height then
tighten the wing nut.
3. Loosen the nuts (G) on the front roller brackets just
enough to allow the adjuster knob (I) to raise or lower
the front roller.
4. Place gauge (D) across bottom of front and rear
rollers near one end of roller.
5. Slide the head of gauge screw (F) over the bedknife
(H) and adjust the knob (I) to close the gap between
the screwhead and bedknife. Then tighten locknut
(G).

5.14 REEL BEARING ___________________________________________________________

Any end play or radial play indicates bad bearings, a
weak tension spring or a backed off nut.
1. Check bearing housing mounting hardware. Tighten
or replace components as required. Carefully clean
threads with degreaser.
2. Apply a medium strength grade of Loctite to nut (J),
then thread nut onto the reel shaft until the nut is
1-27/32" (46 mm) from the end of the reel shaft.
3. Fill reel bearing housings with NLGI - Grade O
grease after adjusting spring.
GB-18
6. Repeat Steps 4 and 5 on opposite end. Complete
adjustment to one end before adjusting opposite end.
7. Tighten nuts (G) and recheck each end.
I
G
D
J
H
F
E
Figure 5M
J
1-27/32"
(46 mm)
GKV-11
Figure 5N