Blade Brake Adjustment; Adjusting Mower Blade - Snapper SERIES 16 250816B Safety Instructions & Operator's Manual

Section 4 - ADJUSTMENTS & REPAIR
CAUTION
Before performing any service or maintenance
procedures, always remove key from ignition
switch, remove spark plug wire from spark plug and
secure spark plug wire away from spark plug.
4.2.2. BLADE BRAKE ADJUSTMENT
1. Remove Belt Cover; See Section 3,
3.2.3, on Page 9.
2. Pull blade engagement lever to the
engaged position. The idler should move at
least 112 inch from disengaged to engaged
position. If this measurement is adequate but
blade stop time is more than 3 seconds
increase blade brake tension as follows.
3. Remove cotter pin from clevis pin and
washer that secures anchor plate to blade
brake. The factory positions the clevis pin
in the middle hole. The rear hole increases
tension on blade brake. The front hole
decreases the tension on blade brake.
. .._ REARWARD HOLE
./_--"--'---,,_k"_ INCREASES TENSION"'-"
_ ON BLADE BRAKE
BRAKE
MARK
BLADE
BLADE TIP
TO OUTER DECK LIP
FIGURE 4.8
1. Select a point on the deck and mark for
reference.
2. Mark blade tips as "A" and "B".
3, Rotate blade until blade tip "A" is at
deck reference mark.
4, Measure the distance between deck lip
and blade tip. Note the measurement. See
Figure 4.8.
FORWARD HOLE
DECREAS
ON BLADE BRAKE
COTTER
\
_ANCHOR PLATE
.__
PIN
FIGURE 4.6
4. Reinstall clevis pin, washer and a new
cotter pin.
IMPORTANT: The idler arm engagement spring should
extend to at least 314= when blade engagement lever is
in the engaged position. If measurement is less than
3/4" the blade belt will have to be replaced. See Section
on blade belt replacement. The idler arm spring and
cable should have looseness when the blade
engagement lever is in the disengaged position.
NOTE: On 25", 28", and 33" decks, the measurement
between the blade tip and deck lip should be 5/16". On
30" decks, the measurement between the blade tip and
deck lip should be 1/8" to 1/4" in front and 3/8" in rear.
5. Repeat steps 2 and 3 with blade tip "B".
6. If measurement between blade tips and
deck are different and there is more than
1/16" difference between blade tip
measurements, adjust blade as follows:
a. Loosen jam-nuts on blade bar.
b. Adjust jack screws "IN" or "OUT" until
blade tip measurements are within 1/16"
of each other and blade tips are 3/8"
away from deck lip. See Figure 4.9.
c. Tighten jam-nuts.
JACK
4.2.3. ADJUSTING MOWER BLADE
Follow procedures for standing Rear
Engine Rider on rear bumper.
IMPORTANT: If the Rear Engine Rider will be on its
rear bumper for longer than two hours, remove the
battery. See 4.6.1., BATTERY REMOVAL on Page 20.
15
JAM-NUTS
FIGURE 4.9