Craftsman 917.253724 - Manual (Page 13)

2. BRAKE ADJUSTMENT
A
IF TRACTOR REQUIRES MORE THAN
SIX FEET STOPPING DISTANCE IN
HIGHEST GEAR ON A LEVEL DRY
concrete OR PAVED SURFACE THEN
BRAKE MUST BE ADJUSTED.
a. Remove (4} Hex Washer Head Tapping Screws from
Shift Cover Plate (Fig. 30), located on top tractor frame.
Remove the Cover Plate.
b. Loosen Jam Nut (A) on Brake Rod (B) at Clevis (C|
(Fig,31)
c Rotate Brake Rod (B) counterclockwise, turning
Brake Rod out of Clevis (C) four to six turns (Fig. 31).
d. Start tractor with Transmission in NEUTRAL posi­
tion ,
e. Depress Brake-Clutch Pedal to the point where Secon­
dary Belt (Fig 16) stops moving. Hold Brake-Clutch
Pedal in position by engaging Parking Brake (Fig, 10)
If Secondary Balt begins to move after engaging Parking
Brake, depress Brake«Ctutch Psctal to next notch on
Parking Brake.
f. Shut engine off. Rotate Brake Rod (B) clockwise by
hand, turning Brake Rod into Clevis iC), until tight.
Tighten .Jam Nut (A) on Brake Rod (B) at Clevis (C)
(Fig. 31!.
CARBURETOR ADJUSTMENT
Never attempt to change maximum engine speed- This is
preset at the factory and should only be changed fay a quali­
fied service technician who has the necessary equipment,
a. Adjust Carburetor to suggested initial settings.
- Turn Needle Valve clockwise ( O ) closing finger
tight ONLY, and then turn counterclockwise }
1-1/2 turns (Fig, 32).
- Turn Idle Valve clockwise, (C™t) closing finger tight
ONLY, and then turn counterclockwise (|0) 1 - 1/2
turns,
CAUTION; Valves may be damaged if turned in too far.
A
REFER TO
PAGE 4. "STARTING THE ENGINE*
b. Start Engine and allow to warm for five minutes. Make
final adjustments with Engine running,
With Throttle Control in ’*SLOW’* position, hold
Throttle Lever against idle Stop and set Idle Speed
Adjusting Screw to give an engine speed of 1400
RPM. Turn Idle Valve clockwise (k^! slowly until
engine begins to miss and then open 1/2 turn counter­
clockwise If^)
- Set Idle Speed Screw to give engine speed of 900
RPM. When Throttle Lever is release from Idle
Stop, engine speed should be between 1000 and 1400
RPM, controlled by governor­
NOTE; ALL ABOVE SPEED AND FUEL MIXTURE
ADJUSTMENTS MUST BE DONE WITH THE
THROTTLE
lever HELD AGAINST THE IDLE
STOP AND AT SPEEDS NOTED.
- With Throttle Control in "FAST*' position, turn
Needle Valve slowly clockwise (r>) until engine be­
gins to miss and then set 1/2 turn counterclockwise,
(r»). NOTE: !F ENGINE HESITATES WHEN MOV­
ING
THROTTLE CONTROL FROM "SLOW" TO
" fast " POSITIONS, TURN NEEDLE VALVE
COUNTERCLOCKWISE ( (^ ) 1/8 TURN MORE.
ADJUSTMENT V-BELT
It may be occasionally necessary to re-adjust V-Belt (See
page 7).
CHECK TO MAKE SURE TRACTOR DOES
NOT START WITHOUT FULLY DEPRESS­
ING CLUTCH-BRAKE PEDAL-
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