Blade Drive Belt; Blade Brake - Craftsman 536.252570 Owner's Manual

SERVICE AND ADJUSTMENTS
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TO ADJUST BLADE DRIVE BELT
(See Fig. 27)
When mower blade drive belt slips and blades wil{ not turn
at full speed when mowing, the blade drive belt should be
tightened+
• Place attachment clutch lever in DISENGAGED posi+
tion,
• Loosen idter pulley hex nut.
• Sfide idler pulley toward rear of mower deck to tighten
belt,. NOTE: Only a small amount of movement should
be required..
e Re-tighten hex nut on idler pulley..
• To check adjustment:
ao Start engine and place throttle control lever in
position FAST.
b. Place attachment clutch lever in ENGAGED position
and allow sufficient time for blades to run to full speed,
then place attachment clutch lever in DISENGAGED
position+ Blades should stop within a few seconds and
remain stopped, tf blades do not stop or tend to creep,
adjustment is too tight,
• To loosen blade drive belt, loosen idler pulley and move
toward front of mower deck+
BLADE BRAKE ADJUSTMENT
(See Fig. 27)
Blade brakes should stop mower blades when attachment
clutch lever is in DISENGAGED position, Blade brake pads
should not come in contact with quill assemblies when
attachment clutch lever is in ENGAGED position..
• Place cutting height adjustment in lowest cut position
(No,1)_
TO CHECK RIGHT HAND BRAKE -
e Move attachment clutch lever backward to DISEN-
GAGED position..
• Begin to move attachment clutch lever forward toward
ENGAGED position and check distance lever moves
before brake pad, on right hand quill assembly, begins
to move.,
• Attachment clutch lever should move at least 3f4 inch,
but not more than t inch, before brake pad begins to
move,,
• tf the distance is not between 3/4 and I inch, (see TO
ADJUST RIGHT HAND BRAKE below}
TO ADJUST RIGHT HAND BRAKE -
e Note which one of five holes on front of idler arm
extension is used for attaching mower clutch cable
spring (see Fig. 27, inset B).
• If distance is more than 1 inch, move mower
clutch cable spring to a hole toward bolts holding idler
arm extension.
e If distance is less than 3/4 inch, move mower clutch
cable spring to a hofe toward free end of idler arm ex-
tension.
• Re-check right hand brake and adjust if required
MOWER DECK
CABLE ENGAGEMENT
COND, UIT
CAB L=E ,_ MOWER DECK
BELT°+°
MOWER CLmCN "
/ _l! tl/_ \ \- DECK
IDL_-_BELT REfAINER \ =DR!VE
HEX NUT __AD
INSET A BRAKE ARM
INSET B
Fig+ 27
TO CHECK LEFT HAND BRAKE -
• Place attachment clutch {ever in DISENGAGED posi-
tion,
• Locknut, on end of brake rod, should be approximately
118inch from brake pad mounting bracket with leit hand
brake pad against pultey of teft hand quiJi assembly (See
Fig. 27, inset A)+
TO ADJUST LEFT HAND BRAKE -
• Adjust Iocknut if necessary
26