Jacobsen 63300, Technical Manual

Page: 31 / 144

FIXED HEAD REEL ADJUSTMENTS 7
31
7.3 BEDKNIFE ADJUSTMENT ___________________________________________________
1. Adjuster (A) is used to increase or decrease the
spring load on the bedknife. Adjuster (B) is used to
move the bedknife to the reel or away from the reel.
2. Once the spring is totally collapsed as a result of
many adjustments, the bedknife cannot be moved.
Back-off adjuster
(A) before adjusting (B) .
3. For most applications, compress the spring to 1 in.,
(25 mm).
4. Start adjustment at the leading edge of the reel,
followed by the trailing end. The leading end of the
reel blade is the end that passes over the bedknife
first during normal rotation.
5. Turn adjuster (B) clockwise to bring the bedknife
closer to the reel or counterclockwise to back the
bedknife away from the reel.
a. Slide a feeler gauge or shim stock 0.001 - 0.003
in., (0.025 - 0.075 mm) between the reel blade
and the bedknife. Do not turn the reel.
b. Adjust the trailing end of the reel in the same
manner, then recheck the adjustment at the
leading end.
c. When the reel and bedknife are properly
adjusted, the reel will spin freely and will cut a
piece of newspaper along the full length of the
reel when the paper is held at 90° to the
bedknife.
Figure 7B
Figure 7C
7.4 CUTTING HEIGHT _________________________________________________________
Note: Make sure the bedknife is properly adjusted before
setting the cutting height. (See Section 7.3)
1. Push kickstand down and tip mower back on it’s
handle.
2. Loosen nuts (D) on both sides just enough to allow
knob (C) to raise the front roller. Raise both sides
an equal amount.
3. Set gauge screw (G) to the desired cutting height
(F) . Measure from the gauge bar (E) to the
underside of the screw head (G) then tighten wing
nut to lock the adjustment.
4. Place gauge bar between front roller and traction
roller, near the outer end of the rollers.
5. Slide screw head over bedknife (H) and adjust knob
(C) so roller just contacts the gauge bar. Tighten nut
(D) .
6. Repeat Steps 4 and 5 on the opposite end of the
reel then tighten nuts (D) . Recheck and readjust the
cutting height if necessary.
Figure 7D
CAUTION
Handle the reel with extreme care to prevent personal
injury and damage to the cutting edges.
!
Rotation
Leading Edge
A
B
NOTICE
Gen-Set Power Modules: Do not leave the mower
tipped back for an extended length of time or oil may
migrate into the combustion chamber.
C
D
E
F
G
H