MTD 640A thru 645A - Manual (Page 6)

2 ■ (3.5 HP)
^2-1/2" (4 HP)
' ,oi3"(5HP)
Maximum
Diameter
Chipper
Chute
FIGURE 5.
IVIAINTENANCE
A WARNING: Always stop engine and dis­
connect spark plug wire before cleaning,
lubricating or performing any repairs or
maintenance.
LUBRICATION
Lubricate the pivot points on the chute def ector and
chipper chute door once a season using a light oil.
ENGINE
Refer to the separate engine manual for engine main­
tenance instructions.
Maintain engine oil as instructed in the separate
engine manual packed with your unit. Read and follow
instructions carefully.
Service air cleaner every 25 hours under n armal con­
ditions. Clean every few hours under extre nely dusty
conditions. Poor engine performance and flooding
usually indicates that the air cleaner should be ser­
viced. To service the air cieaner, refer to the separate
engine manual packed with your unit.
The spark plug should be cleaned and the gap reset
once a season. Spark plug replacement is recom­
mended at the start of each season; chock engine
manual for correct plug type and gap specil ications.
Clean the engine regularly with a clott or brush.
Keep the cooling system (blower housing area) clean
to permit proper air circulation which is essential to
engine performance and life. Be certain to remove all
dirt and combustible debris from muffer area.
CLEANING
The shredder may be cleaned by running water from
a hose through the hopper assembly and chipper
chute with the engine running. Allow the shredder to
dry thoroughly.
Wash the bag periodically with water. / Jlow to dry
thoroughly in the shade. Do not use heat.
REMOVING THE FLAIL SCREEN
If the discharge area becomes clogged, remove the
flail screen and clean area as follows.
1. Stop the engine, make certain the shredder has
come to a complete stop and disconnect spark
plug wire from the spark plug before unclogging
the chute.
2. Loosen the two hand knobs on each side of the
chute deflector. Lift the chute deflector up, and tie
it out of the way.
3. Remove two hairpin clips from the clevis pins
which extend through the housing. Remove the
cievis pins. Lift the flaii screen from inside the
housing. See figure 6.
4. Clean the screen by scraping or washing with
water. Reinstall the screen.
NOTE: Be certain to reassemble the flail screen with
the curved side down as shown in figure 6.
Chute Deflector
Hand Knobs
FIGURE 6.