Sears 917.253540 Owner's Manual page 10

RETAINER
cf
IDLER
SPRING ...._., SHAFT
ASSEMBLY
FIGURE 18
ELT GUIDE
UPPER
~~~~~
CENTER
MANDREL:
SHEAVE
BELT
GUIDE
NUTS
FIGURE 19
ENGINE - - - - -
PULLEY
ADJUSTMENT OF SNUBBER
[BRAKE FOR MANDRELS)
After belt has been properly adjusted, adjust Adjusting Pin on
Snubber Pull Rod as stated below:
Place Mower Clutch Control Lever in "OUT" posit ion (Fig.
7A) .
Remove Retainer Spring holding Adjusting Pin on Snubber
Pull Rod in Idler Shaft Assembly. Remove Adjusting Pin
fro m hole. With the Mower Clutch Control Lever in the "OUT"
Position. turn Adjusting Pin on Sn ubber Pull Rod until Adjust-
ing Pin will fit freely in hole of Idler Shaft Assembly. Remove
Adjusting Pin from hole. Turn Adjusting Pin counterclock-
wise 6 complete turns and replace Washer on Pin against
shoulder. Reinsert Pin with Washer in hole of Idler Shaft
Assembly. NOTE : Mower Clutch Contro l Lever can be pulled
ahead to assemble. Secure with Retainer Spring .
When Mower Clutch Control Lever is fully disengaged, blades
will stop quickly.
NOTE: TRACTOR WILL NOT START I F SNUBBER PULL
ROD IS NOT PROPER LY ADJUSTED.
MAKE SURE THAT BRAKE IS NOT
AGAINST MANDREL PULLEY WHEN
MOWER IS ENGAGED (LEVER PUSHED
FORWARD).
If Snubber Pull Rod is ever removed, be sure it is reassembled
with slight bend in Rod downward and under the mower drive
'&
belt. Refer to Fig. 9, page 4.
BELT REPLACEMENT
MOWER MAIN DRIVE BELT
1.
Unhook Spring from rear belt guide bracket of Belt Guide
(Fig. 19).
2 .
Remove Belt Guide at center mandrel by removing three (3)
Nuts and Lockwashers.
3.
Remove Nut and Lockwasher from Idler Shaft Assembly
and remove Belt Guide (Fig . 19A) . A lso remo ve Engine
Belt Guard and Belt (Fig. 18).
4 .
Install new Belt on Idler Sheaves and on Engine Pulley.
-8-
NOTE: See Fig. 19A for proper way of installing Belts on
Idler Sheaves . Backside (outside) of Belt must be placed in
flat (outside) Idler. Belt must be placed in largest groove
of Engine Pulley. Replace Belt Guide securely.
5.
Replace Engine Belt Guard (Fig. 18).
6.
Replace Belt Guide and snu bber at center mandrel and
adjust so that there is 1/16 to 1/8 inch clearance between
it and the Sheave . Replace Spring (Fig. 19). Adjust drive
ti..,
belt and snubber refer to page 4, steps 1 thru 8.