Scag Power Equipment STC - Manual (Page 34)

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Section 7
WARNING:
BATTERIES PRODUCE EXPLOSIVE
GASES. Charge the battery in a well
ventilated space so gases produced while
charging can dissipate.
Charging rates between 3 and 50 amperes are satisfactory
if excessive gassing or spewing of electrolyte does not occur
or the battery does not feel excessively hot (over 125°F).
If spewing or gassing occurs or the temperature exceeds
125°F, the charging rate must be reduced or temporarily
stopped to permit cooling.
C. Jump Starting
1. The booster battery must be a 12 volt type. If a vehicle
is used for jump starting, it must have a negative ground
system.
2. When connecting the jumper cables, connect the
positive cable to the positive battery post, then connect
the negative cable to the negative battery post.
7.8 DRIVE BELTS
All drive belts are spring loaded and self-tensioning, however
after the first 2, 4, 8 and 10 hours of operation, the belts
should be checked for proper alignment and wear.
Thereafter, check the belts after every 40 hours of operation
or weekly, whichever occurs first.
-NOTE-
If you experience frequent belt wear or breakage,
see your authorized Scag Dealer for belt
adjustment.
7.9 CUTTER BLADES
A. Blade Inspection
1. Remove the ignition key before servicing the blades.
2. Raise the mower deck to the highest position. Place
the lanyard pin in the highest cutting height positon to
prevent the cutter deck from falling.
WARNING:
Always wear proper hand and eye protection
when working with cutter blades.
WARNING:
4. If a blade cutting edge is dull or nicked, it should be
sharpened. Remove the blades for sharpening. See
"Blade Replacement."
-NOTE-
Keep the blades sharp. Cutting with dull blades
not only yields a poor mowing job, but slows the
cutting speed of the mower and causes extra wear
on the engine and the blade drive.
Do not attempt to straighten a bent blade, and
never weld a broken or cracked blade. Always
replace it with a new blade to assure safety.
B. Blade Sharpening
-NOTE-
If possible, use a file to sharpen the blade. Using
a wheel grinder may burn the blade.
-NOTE-
DO NOT sharpen the blades beyond 1/3 of the width
of the blade.
1. Sharpen the cutting edge at the same bevel as the
original ( See Figure 7-9). Sharpen only the top of the
cutting edge to maintain sharpness.
3. Check the cutter blades for straightness. If the cutter
blades appear bent, they will need to be replaced.