MTD 243-645A000 - Manual (Page 5)

4. Pull rope with a rapid, continuous, full arm stroke.
Keep a firm grip on starter handle. Let rope
N rewind slowly. Do not let starter handle snap back
against starter.
5. Repeat preceding instructions 3 and 4 until
engine fires. When engine starts, move choke
lever on engine halfway between CHOKE and
OFF.
6. Move throttle control to SLOW position for a few
minutes warm-up. Move choke lever to OFF posi­
tion as engine warms up.
NOTE: In order to idle smoothly, a new engine may
require 3 to 5 minutes running above slow idle speed.
Idle speed has been adjusted to be correct after this
break-in period.
TO STOP ENGINE
1. Move throttle control lever to STOP position.
2. Disconnect spark plug wire and move away from
spark plug to prevent accidental starting while
equipment is unattended.
HOW TO USE YOUR SHREDDER
Do not attempt to shred or chip any material other
than vegetation found in a normal yard (i.e., branches,
leaves, twigs, etc.).
2. Bulky material, such as stalks or heavy branches,
up to the diameter listed In the chart below
should be fed into the chipper chute. See figure
5.
A
WARNING: Do not attempt to shred or
chip material larger than specified in the
chart below. Personal injury or damage
to the machine could result.
A WARNING: The shredder discharges
material with considerable velocity. Keep
away from the area around the chute
deflector. Always stop the engine and
disconnect the spark plug wire when
removing or attaching the bag, when
changing containers or when removing
the shredded material, wear safety glass­
es and gloves whenever using your
shredder.
1. Leaves and small branches up to 1/2" diameter
can be fed into the hopper assembly. See figure 4.
If it becomes necessary to push material into the
shredder, use a small diameter stick—NOT YOUR
HANDS. The stick cannot exceed 1/2" in diameter
so it will be ground up if it gets into the impeller
assembly.
A WARNING: Do not put material larger
than 1/2" in diameter into the hopper.
Personal injury or damage to the
machine couid result. Material of a larger
diameter may be fed into the chipper
chute according to the chart in next
column.
Model
Chipper Chute
Capacity
640A (3.5 HP) 2"
641A (4 HP) 2-1/2“
645A (5 HP) 3"
A WARNING: Make certain the chipper
chute door is closed when chipper chute
is not in use.
IMPORTANT: There is a flail screen located inside
the housing in the discharge area. If the flail screen
becomes clogged, remove and clean as instructed in
the Maintenance section below.
For best performance, it is important to keep the
shredding blade and the chipper blades sharp. Refer
to Maintenance section, page 7.
If the composition of the material being discharged
changes (becomes stringy, etc.) or if the rate at which
the material is discharged slows down considerably, it
is likely that the shredding blade and/or chipper
blades are dull and need to be sharpened or
replaced.