Textron JACOBSEN G-Plex II, Руководство по запасным частям и обслуживанию

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GB-8
JACOBSEN G PLEX II Series: ZV
MAINTENANCE AND PARTS MANUAL
GB
BEDKNIFE ADJUSTMENT
For this adjustment, the backlap valve control lever
must be in the center “neutral” position so
that the reels can be rotated manually.
WARNING
• To avoid the possibility of serious injury,
NEVER attempt any cutting head
adjustment while the engine is running.
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 14).
2. While rotating the reel backwards, turn the
upper
adjustment screws (leading end
first) until there is approximately .001 ²
(.025mm) clearance. After adjusting both
ends, recheck the leading end.
NOTICE
• 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.
1
2
Figure 14
1. Upper Adjustment Screw
2. Lower Adjustment Screw
3. 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.
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.
HEIGHT OF CUT
NOTICE
• All three cutting heads MUST be accurately
set at the same height of cut to insure an
even cut.
• Bedknife adjustment must be made before
setting the height of cut.
1. Set the height of cut on the gauge block
(Part No. 892010) by turning the wingnut
until the distance between the bottom of
the screw head and the top of the gauge
block equals the desired height of cut (See
Fig. 16).
2. Loosen the locking nut on one of the front
roller adjusting brackets just enough to
allow adjustment (See Fig. 15).
1
Cutting Head Shown
with
Rear Rotary Brush Ac
cessory mounted
Figure 15
1. Loosen Locking Nut
3. Hold the gauge block across the bottom of
both the front and rear rollers near the
roller adjustment bracket and adjust the
front roller until the cutting edge of the
bedknife comes up to touch the bottom of
the gauge screw head (See Fig. 16).
Front Roller Rear Roller
Bedknife
Gauge Block
Gauge
Screw
Head
Set Height Of Cut
(Part No. 892010)
Figure 16
Height of Cut Adjustment
4. Tighten the locking nut and repeat the
procedure at the other end. After
adjustment has been made at both ends,
go back and recheck both ends.
5. Make sure all three cutting heads are set
without changing the height of the gauge
screw.