Craftsman 172.79183 Operator's Manual page 22

REMOVINGTHE BLADE FOR REPLACEMENT
/k CAUTtON:B_DE
ROTATESmome.tatlly after powerswitch is released.Wait
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for blade to come to a complete stop. Blade is sharp, wear work gloves when replacing.
t. Loosen Screw underBlade Guard Release Lever, pull Blade Guard Release Lever
and open Blade Guard Door. See OPENING THEBLADE GUARD on Pages 20-21,
2. Use a t" crescentwrenchto holdthe outerspacer in place,which will keep the blade
from turning,Witha 9/16" crescent wrench,toosenthe hex head nut,withconical
washer (Fig. t5a).
3. Remove hex head nut with cohicalwasher, spacer and blade.
Hex Head Nut
with_ontca!washer
ATTACHING THE NEW BLADE
I NOTE: Clean off debris from blade and all mounting hardware.
1. Be sure {nnerspacer s on shaft - =flats" in spacer hole must engage with ;'liars"
on shaft (Rg 15b).
2. Place the blade on the shaft over the innerspacer.
=3. Hod the bade against the inner spacer and installthe outer spacer.
=againaligningthe flats in the spacer with the fiats on the shall
4. Installthe hex head nut with conicalwasher. Use a 1"crescentwrench tb holdthe
outer spacer in place, which wil!keep the blade from turning. Witha 9116"Crescent
wrench,firmly tightenthe hex head nutwith conicalwasher (Fig 15a).
t OTE: Replace the hex head nut with conical washer ONLY with idenUcal
replacement part; see Parts List.
5. Close Blade Guard door. Blade Guai'd Release Lever must snap into lockedposition.
Tightenscrew under Blade Guard Release Lever.
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