MTD Shredder 642D thru 648D - Manual (Page 8)

H( tpper
Asi embly
FIGURE 8.
3. Bulky material, such as stalks or heavy 1 iranches,
up to 3" in diameter should be fed into the
chipper chute. See figure 9.
A
WARNING: Make certain the chipper
chute door is ciosed when not in use.
IMPORTANT: There is a fiail 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 9. If the composition of
the material being discharged changes (becomes
stringy, etc.) or if the rate at which the material is dis­
charged slows down considerably, it is likely that the
shredding blade and/or chipper blades are dull and
need to be sharpened or replaced.
I\/AINTENANCE
A
WARNING: Always stop engine and dis­
connect spark plug wire before :leaning,
lubricating or performing any r »pairs or
maintenance.
LUBRICATION
Lubricate the pivot points on the release hai idle, hop­
per assembly, chute deflector and chipper c lute once
a season using a light oil.
ENGINE
Refer to the separate engine manual fc r engine
maintenance instructions.
Maintain engine oil as instructed in the separate
engine manual packed with your unit. Read ind follow
instructions carefully.
Service air cleaner every 25 hours under nc rmal con­
ditions. Clean every few hours under extrer lely dusty
conditions. Poor engine performance and flooding
usually indicates that the air cleaner shou d be ser­
viced. To service the air cleaner, refer to th( 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; check engine
manual for correct plug type and gap specifications.
Clean the engine regularly with a cloth 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 muffler 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. Allow 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.