To Replace Mower Blade Drive Belt; To Replace Motion Drive Belt - Craftsman 917.20390 Operator's Manual

TO REPLACE MOWER BLADE DRIVE
BELT
The mower blade drive belt may be replaced
without tools. Park the tractor on level sur-
face. Engage parking brake.
BELT REMOVAL -
1. Removemowerfromtractor (See"TO RE-
MOVE MOWER"inthissectionofmanual).
2. Work belt off both mandrel pulleys and
idler pulleys.
3. Putt belt away from mower.
BELT INSTALLATION -
1. Work belt around both mandrel pulleys
and idler pulleys
2. Make sure belt is in all pulley grooves
and inside all belt guides.
3. Install mower (See "To Install Mower" in
this section of this manual).
Mandrel idler
Pulle_ Pulleys
Mandrel
BELT INSTALLATION -
1. Install new belt from tractor rear to front,
over the steering plate (F) and above
clutch brake pedal shaft (G).
2. Pull belt toward front of tractor and roll
belt onto engine pulley (E).
3. Pull belt toward rear of tractor. Carefully
work belt down around transmission
cooling fan and onto the input pulley (D).
Be sure belt is inside the belt keeper.
4. Install belt on centerspan idler (C).
5. Install belt through stationary idler (A)
and clutching idler (B).
6. Make sure belt is in all pulley grooves
and inside all belt guides and keepers.
7. Install mower (See "TO INSTALL
MOWER" in this section of manual).
TO REPLACE MOTION DRIVE BELT
Park the tractor on level surface. Engage
parking brake. For assistance, there is a
belt installation guide decal on bottom side
of left footrest.
BELT REMOVAL -
1. Remove mower (See "TO REMOVE
MOWER" in this section of manual).
NOTE: Observe entire motion drive belt
and position of all belt guides and keepers.
2. Remove beltfrom stationary idler (A) and
clutching idler (B).
3. Remove belt from centerspan idler (C).
6. Pull belt slack toward rear of tractor.
Carefully remove belt upwards from
transmission input puttey and over cooling
fan blades (D).
4. Remove belt downward from engine
pulley (E).
5. Slide belt toward rear of tractor, off the
steering plate (F) and remove from tractor.
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