Textron JACOBSEN GP400, Technical/Repair Manual

Page: 290 / 354

8-18 4252490-Rev A
CUTTING UNITS
8
Height-of-Cut (HOC) Adjustment
See Figure 8-4.
!
CAUTION
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
Figure 8-4
NOTE
The bedknife-to-reel clearance should be properly
adjusted before adjusting the cutting height. (See
“Bedknife-to-Reel Clearance Adjustment” on page 8-17.)
2. Loosen lock nut (9) on the side of front roller bracket
(8) just enough to allow adjusting knob (1) to raise or
lower the bracket.
3. Set height-of-cut bar (6) to desired height-of-cut (2)
by measuring between underside of screw head and
surface of height-of-cut bar and tightening the wing
nut (4).
4. Place height-of-cut bar (6) across bottom of front
roller (7) and rear roller (5), near one end.
5. Slide the head of the gauge screw over the bedknife
(3).
6. Turn adjusting knob (1) to close the gap between the
front roller (7) and rear roller (5) and the height-of-cut
bar (6).
7. Tighten lock nut (9).
8. Repeat steps 2 through 7 on opposite end of front
roller (7).
9. Recheck each end with height-of-cut bar and
readjust as necessary.
NOTES
• Check the position of each reel for desired
height-of-cut.
• All reels must be accurately adjusted to exactly the
same height for proper cutting.
Grass Shield Adjustment
See Figure 8-5.
!
CAUTION
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
Figure 8-5
2. Loosen nut (2) on each end of grass shield (1) and
adjust grass shield as close to reel blades as
possible without making contact.
3. Tighten nut (2) on each end of grass shield.
To prevent personal injury and damage to the
cutting edges, handle the reel with extreme care.
TN0891
9
1
2
3
4
5
6
7
8
To prevent personal injury and damage to the
cutting edges, handle the reel with extreme care.
TN3731
2
1
2