Repair And Adjustment - Craftsman 917.254640 Owner's Manual

REPAIR AND ADJUSTMENT
b.
C.
When grinding, care should be taken to maintain
blade balance and the blade should be checked
for proper balance before reinstallation on
mower. An unbalanced or bent blade will cause
excessive vibration when running, and eventual
damage to mower or engine. Replace bent or
damaged blades.
To check blade balance, drive a nail into a beam
or walt. Leave about one inch of the straight nail
exposed. Place center hole of clean blade over
the head of the nail (Fig. 13), NOTE: CENTER
HOLE OF BLADE ON NAIL, IF BLADE IS PROPER-
LY BALANCED, BLADE SHOULD REMAIN IN
POSITION SHOWN IN FIG. 13. IF EITHER END
OF THE BLADE MOVES DOWNWARD, BLADE
IS NOT BALANCED. SHARPEN THE HEAVY END
UNTIL BLADE IS BALANCED.
HOLE 0 -
lll , j !l!
FIGURE 13
4. BATTERY CARE
Check Battery
a. Battery acid solution level in each battery cell
should be even with bottoms of vent tubes in
cells (Fig, 14), Add ONLY distilled or iron free
water if necessary. NOTE: DO NOT OVERFILL.
b. Keep battery and terminals clean.
c. Keep battery bolts tight.
d. Keep vent caps tight and small vent holes in caps
open,
e. Recharge at 6 amperes for 1 hour if necessary.
Clean Battery and Terminals
Corrosion and dirt on the battery and terminals cause
the battery to "leak'" power and hinders the opera-
tion of the charger.
LEAD-ACID BATTERIES GENERATE
EXPLOSIVE GASES. KEEP SPARKS,
FLAME AND SMOKING MATERIALS
AWAY FROM BATTERIES. ALWAYS
SHIELD YOUR EYES AROUND
BATTERIES.
, ,,,, ,,,,,,,,,
a. Remove terminal guard.
b. Disconnect BLACK battery cable, then RED bat-
tery cable, and remove battery from tractor.
c. Wash battery with four tablespoons of baking
soda to one gallon of water. NOTE: BE CAREFUL
NOT TO GET THE SODA SOLUTION INTO THE
CELLS.
d. Rinse the battery with plain water, dry and
reinstafl on tractor.
e . Clean terminals and battery cable ends with wire
brush until bright.
f . Replace battery cables, connecting RED battery
cable to positive terminal first, then BLACK bat-
tery cable to negative terminal. Coat terminal
connections with grease after installation of
cables.
g. Replace terminal guard.
CIJ! AWAY VI(W DATTI[RY
CAP
IATTERY
"" _ VENT
• I TU_E
FtGURE14
15