Sears 917.257720 Se Ce, Adjustments, TO ADJUST BRAKE See Fig, TO ADJUST ATTACHMENT CLUTCH See Fig

SE CE

TO REPLACE MOWER BLADE DRIVE BELT

(See Fig. 27)

Park the tractor on level surface. Engage parking brake,

Remove mowerdrive belt (See'qO REPLACE MOWER DRIVE BELT" in this section of this manual),

o 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.

o Carefully roll belt off R.H. mandrel pulley.

-Remove belt from center mandrel pulley, idler pulley, and L.H. mandrel pulley.

oRemove 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 spring is hooked in secondary idler arm and sway-bar bracket.

oInstall 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 to tractor (See"TO INSTALL MOWER" in the Assembly section of this manual).

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

CENTER

MANDREL

COVER

tSCREW

/

ADJUSTMENTS

NYLON LOCKNUT (3) BRAKE PLATE

FIG, 28

TO ADJUST BRAKE (See Fig. 29)

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

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

•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/department.

WiTH PARKING BRAKE "ENGAGE"

iDLER ARM ,°

SPRING j

SWAY-BARiDLER

BRACKETPULLEY

FIG. 27

TO ADJUST ATTACHMENT CLUTCH (See Fig. 28)

The electric clutch should provioe years of service. The _tutch has a bulk-in brake that stops the pulley within 5 3econds. Eventually, the internal brake will wear which may cause the mower blades to not engage, or, to not stop as required. Adjustments should be made byyour nearest adthorized service center/department.

°Make sure atta chment clutch and ignition switches are in "OFF" position.

°Adjust the three nylon Iocknuts until space between clutch plate and rotor measures .0t2" at all three slot locations cut 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 unclutch plate

\ NUT "A"

OPERATING

ARMNUT

\

FiG, 29

21