Bedknife Adjustment - Jacobsen G-Plex III Manuel De L'opérateur Et De Sécurité

9 ADJUSTMENTS
GB
9.3

BEDKNIFE ADJUSTMENT

NOTE: If the backlap valve accessory (Part
No. 2702016) is installed, the backlap valve
control lever must be in the center "neutral"
position so that the reels can be rotated
manually.
Any adjustment to the clearance between the
reel blades and the bedknife should be done at
the leading end of the reel first (the end at
which each individual blade first crosses the
bedknife). Then at the opposite end of the reel.
1. Loosen the lower adjustment screws at
each end by turning them approximately
1/4 turn counterclockwise (See Figure
9.3.2).
2. While rotating the reel backwards, turn the
upper adjustment screws (leading end first)
until there is approximately .001, (.025mm)
clearance. After adjusting both ends,
recheck the leading end.
NOTE: Too much clearance between the bedknife
and the blades will result in poor cutting
quality. Too little clearance will cause
excessive wear to the cutting edges and
may cause damage to the bedknife, reel
blades or other components.
3. Using a wrench rotate the reel forward. The
reel must turn freely and you should just
be able to hear the reel blades making
slight contact with the bedknife (See Fig.
9.3.1.).
4. After the bedknife is properly adjusted,
tighten the lower adjustment screw at each
end.
5. Test the cutting head by holding two strips
of newsprint perpendicular to the bedknife.
Rotate the reel with a wrench. The reel
must turn freely and each blade on the reel
should cut one of the two strips of paper.
GB-22
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JACOBSEN G-PLEX III Series: DN & DP
SAFETY AND OPERATORS MANUAL
Figure 9.3.1
1. Rotate Cutting Reel with this Screw Head
Figure 9.3.2
1. Upper Adjustment Screw
2. Lower Adjustment Screw
WARNING
To avoid the possibility of serious injury,
NEVER attempt any cutting head
adjustments while the engine is running.
WARNING
NEVER rotate the cutting reel by pushing
it with your hands or fingers. Fingers can
become caught between the reel and the
frame resulting in serious injury. Use a
rachet with a 9/16" socket on the end of
the reel shaft to rotate it during
adjustments and testing.