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3
ADJUSTMENTS
3.13 REEL TO BEDKNIFE _______________________________________________________
(Pre-adjustment Check)
1.
Check the r eel bearings for end pl ay or radial play. If
there is any abnormal mov ement of the r eel, up and
down or s ide to side, adjust or replac e components as
needed.
!
CAUTION
To prevent personal injury and damage to the cutting
edges, handle the reel with extreme care.
2.
Inspect the reel blades and bedk nife to ins ure good
sharp edges without bends or nicks.
a.
The cutting edges of the reel blades and bedknife
must be s harp, free of burr s, and show no signs of
rounding off.
b.
The bedk nife and bedk nife bac king mus t be
securely tighte ned. The bedk nife mus t be straight
and sharp.
c.
A flat surface of 5/32 in. (4 mm) mini mum must be
maintained on the front fac e of the bedk nife. Use a
standard flat file to dress the bedknife.
3.
If wear or d amage i s beyond the point where the reel
or bedk nife c an be c orrected by the l apping proc ess,
they must be reground.
4.
Proper reel-to-bedk nife adjus tment i s c ritical. A gap of
0.001 to 0.00 3 i n. (0.025 to
3.14 REEL TO BEDKNIFE ADJUSTMENT __________________________________________
1. Read Section 3.13 before making the adjustment.
2. Start adj ustment a t the le ading edg e of the r eel,
followed b y th e tr ailing e nd. The leading end of the
blade is the end that passes over the bedknife first
during normal rotation.
3. Loosen nu t ( C) 1 /4 tu rn on b oth ends of the c utting
unit.
a. Turn adjuster (A) in 1/16 to 1/8 turn increments.
b. Slide a fee ler ga uge or s him s tock.001 i n. ( .025
mm) b etween th e r eel bla de a nd th e bed knife.
Do not turn reel.
c.
Adjust t he t railing en d o f the r eel i n th e s ame
manner th en r echeck the a djustment at th e
leading end.
d. Tighten
all ha
adjustment.
14
0.076 mm) must be
rdware a
nd r
echeck th
maintained ac ross the enti re length of the reel and
bedknife.
5.
The reel mus
improperly adjusted r eel will los e it s sharp edges
prematurely and may res ult in serious damage to the
reel and bedknife.
6.
Grass conditions will also affect the adjustment.
a.
Dry, s parse c onditions will require a wider gap to
prevent heat bui ldup and da mage to the reel and
bedknife.
b.
High qualit y gras s with a good mois ture content
requires a closer gap (near zero).
°
5 -6
Leading
Edge of Reel
e. When properly adjusted, the reel will spin freely,
and y ou should be a ble to c ut a pi ece o f
newspaper along the full length of the reel, when
the paper is held at 90°.
C
e
t be p
arallel to t
he bedk nife. An
°
93
5/32 in.
A
B
Figure 3L
Normal
Rotation
G
F
E
D
Figure 3N
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