Craftsman 900.370511 Instruction Manual page 12

• Locate y ourhand inthehandle p ocket of
themulch i nsert, liftandpul! o utthe
mulch insert c ompletely.
• Therear d ischarge door i sspring
loaded. When yourelease i tthedoor w ill
return totheclosed p osition.
TO INSTALL MULCH INSERT
• Shut the mower off, wait until the blade
stops and unplug the mower.
• Raise the rear door and slide the mulch
insert into the discharge opening until it
is firmly in contact with the deck.
• Release the rear door.
• Remove square steel washer, plastic
insulator washer and blade.
Blade Nut Plastic
Square
Steel
Washer
Blade
Fan Base
Mulch
insert
TO REMOVE BLADE
• Release Operator Presence Control
Switch to turn mower off, wait for the
blade to stop, and unplug mower!
• Cut a two foot length of 2x4 wood and
use it to keep blade from turning while
removing blade nut.
• Wear gloves, position wood, and loosen
nut counterclockwise as shown. Remove
nut.
TO REPLACE BLADE
• Place blade on shaft so that the blade
edges are parallel with the fiat sides of
the shaft. Make sure you place the blade
so that its cutting edges wil! face the
ground when the mower is running.
• Place plastic insulator washer on shaft
so that two of the washer's raised edges
fit over the edges of the blade.
• Place square steel washer on shaft so
that flat sides of hole in washer are
parallel with flat sides of shaft.
• Place blade nut on shaft. Make sure all
parts stay aligned. Position wood to keep
shaft from turning. Securely tighten blade
nut clockwise to 20-30 ft. Ibs.
TO SHARPEN BLADE
• Keep blade sharp for best mower
performance. A dull blade does not cut
grass evenly.
• Wear proper eye protection.
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