Bolens 820 thru 829 - Manual (Page 22)

CUTTING BLADES
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WARNING: Protect hands by using
heavy gloves or a rag to grasp the cutting
blades.
The blades may be removed for sharpening or
replacement as follows:
Remove the hex flange nut that holds the blade to
the blade spindle. See Figure 27.
Figure 27
When sharpening the blades, follow the original
angle of grind as a guide. It is extremely important
that each cutting edge be ground equally to prevent
an unbalanced blade. An unbalanced blade will
cause excessive vibration when rotating at high
speeds, may cause damage to the mower and could
break, causing personal injury.
The blade can be tested for balance by balancing it
on a round shaft screwdriver. Remove metal from
the heavy side until it balances evenly.
When replacing the blade, be sure to install the
blade with the side of the blade marked “Bottom” (or
with part number) facing the ground when the mower
is in the operating position.
TORQUE SPECIFICATIONS
Blade
Hex Flange Nut: 840 in. lb. min., 1080 in. lb. max.
Blade Spindle Screws
If disassembled for any reason, tighten the blade
spindle screws between 200 and 275 inch pounds.
WHEEL ADJUSTMENT
The caster (forward slant of the king pin) and the
camber (tilt of the wheels out at the top) require no
adjustment. Automotive steering principles have
been used to determine the caster and camber on
the tractor. The front wheels should toe-in between
1/16-5/16 inch.
Some units have adjustable tie rods so the toe-in
can be adjusted. To adjust the toe-in on these units,
follow these steps.
2
.
3.
Remove the hex nut and lock washer, and drop
the end of the tie rod from the axle bracket. See
Figure 28.
Loosen the hex jam nut on tie rod.
Adjust the tie rod assembly for correct toe-in.
Dimension “B” should be approximately 1/16-5/16"
less than Dimension “A.” See Figure 29. To increase
Dimension “B,” screw tie rod into tie rod end. To
decrease Dimension “B,” unscrew tie rod from tie rod
end. Reassemble tie rod. Check dimensions. Read­
just if necessary.
Figure 29
BATTERY CARE AND MAINTENANCE
(TYPE "A" BATTERY)
Type “A” batteries are sealed and are maintenance
free.
BATTERY CARE AND MAINTENANCE
(TYPE "B" BATTERY)
CHECK FLUID LEVEL
Check fluid level inside each cell of the battery every
two weeks and before and after charging. Always
keep level just below the split rings.
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