Front-To-Back Adjustment; To Adjust Mower Drive Belt; To Replace Mower Drive Belt - Craftsman 917.255950 Owner's Manual

S:RVmCI5 AND .ADJUSTMENTS
FRONT-TO-BACK ADJUSTMENT(See FIGS 31and 32)
To obtain the best cutting results, the mower housing should
be adjusted so the back is approximately 7/8" to 1-1/8"
higher than the front when the mower is in its highest posi-
tion
Measure distance"D" from ground lineto bottom of deck curl
at centerline of left and right blade mandrels
to11,0 q
/////7"?_772////////////////////////////
FIG. 31
• To raise rear of mower, loosen nut "E" on both rear sus-
pension arms Screw both nuts "F" on both rear suspen-
sion arms an equal number of turns,
• When distance "D" is 7/8" to 1-1/8" higher at rear than
front, retighten nuts "E"
NUT "E"
SUSPENSION
NUT"E" ARMS
FIG. 32
• Recheck side-to-side adjustment.
IMPORTANT:
TO ADJUST MOWER DRIVE BELT (See
FIG. 33)
• Lower mower with attachment lift control.
° Check dimension "A" on idler bracket assembly as shown.
If dimension is 1/4" or less, belt should be adjusted.
• Pull tension pulley lever forward to loosen belt.
, Remove idler pulley and reassemble in "NEW" pulley po-
sition hole. Tighten securely.
• Push tension pulley lever rearward into operating posi-
tion.
• Check belt for proper position in all pulley grooves.
NOTE: When installing a new replacement mower drive
belt, idler pulley must be moved back to "ORIGINAL" pulley
_osition.
CLUTCH MOWER
PULLEY DRIVE
BELT
TENSION
PULLEY
IDLER
BRACKET
ASSEMBLY
PULLEY
WHEN ADJUSTING REAR SUSPENSION
ARMS, ALWAYS ADJUST BOTH
EQUALLY SO MOWER WILL STAY
LEVEL SIDE-TO-SIDE.
NEW
PULL FORWARD PULLEY ORIGINAL
TO LOOSEN BELT POSITION PULLEY
FOR EASIER POSITION
BELT INSTALLATION
IDLER
PULLEY
FIG. 33
TO REPLACE MOWER DRIVE BELT
Reverse procedure and install new belt as described in
"DRIVE BELT INSTALLATION" in the assembly section of
this manual.
NOTE: If old mower drive belt was adjusted, idler pulley
must be moved back to "ORIGINAL" position when installing
a new belt.
2O