Sears 917.250551 manual Service And, Adjustments, TO ADJUST BRAKE See Fig

SERVICE AND

TO REPLACE MOWER BLADE DRIVE BELT

(See Fig. 23)

Park the tractor on level surface, Engage parking brake

•Remove mowerdrive belt (See'q-OREPLACE MOWER DRIVE BELT" in this section of this manual).

Remove mower (See "TO REMOVE MOWER" in this section of this manual),

o Remove four screws from R.H, mandrel cover and

remove cover, Unhook spring from bolt on mower housing

oCarefully roll belt off RH mandrel pulley.

Remove belt from center mandrel pulley, idler pulley, and LH mandrel pulley,

Remove any dirt or grass which may have accumu- lated around mandrels and entire upper deck surface.

Check secondary idler arm and idler to see that they rotate freely

Be sure spdng is hooked in secondary idler arm and sway-bar bracket,

Install new belt in lower groove of L H mandrel pulley, idler pulley, and center mandrel pulley as shown.

Roll belt over R, H, mandrel pulley Make sure belt is in all grooves properly,

Reconnect spring to bolt in mower housing and rein- stall R,H, mandrel cover_

Reinstall mower tetractor(See "TO INSTALL MOWER" in the Assembly section of this manual)

Reassemble mower drive belt (See "TO REPLACE MOWER DRIVE BELT" in this section of this manual

MOWER BLADE
DRIVE BELT	CENTER
	MANDREL
	MANDREL
	COVER

SPRING

IDLER'_

SWAY-BAR

BRACKET

FIG, 23

ADJUSTMENTS

ROTORCLUTCH PLATE

NYLON LOCKNUT (3) BRAKE PLATE

FIG. 24

TO ADJUST BRAKE (See Fig. 25)

Your tractor is equipped with an adjustable brake system which is mounted on the left side of the transaxle

If tractor requires more than six (6) feet stopping distance at high speed in highest gear. then brake must be adjuste&

Depress clutch/brake pedal and engage parking brake

°Measure distance between brake operating arm and nut "A" on brake rod,

If distance is other than 1-3/4", loosen jam nut and turn nut "A" until distance becomes 1-3/4" Retighten jam nut against nut "A"

Road test tractor for proper stopping distance as stated above, Readjust if necessary. If stopping distance is still greater than six (6) feet in highest gear, further maintenance is necessary Contact your nearest au- thorized service center/departmenL

WITH PARKING BRAKE "ENGAGED"

JAM NUT

ARM

TO ADJUST ATTACHMENT CLUTCH

(See Fig. 24)

The electric clutch should provide years of service The clutch has a built-in brake that stops the pulley within 5

seconds_ Eventually, the internal brake will wear whichFIG. 25 may cause the mower blades to not engage, or, to not stop

as required Adjustments should be made by your nearest authorized service center/department

Make sure attachment clutch and ignition switches are in "OFF" position.

oAdjust the three nylon Iocknuts until space between clutch plate and rotor measures 012" at all three slot locations cut in the inside of brake plate

NOTE: After installing a new electric clutch, run tractor at full throttle and engage and disengage electric clutch 10 cycles to wear in clutch plate

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