Scotts 907254 - LM21SW - Manual (Page 16)

16
4. Install blade, lock washer and tighten cap screw
until lock washer is fully compressed (requires
25-30 ft. lbs. of torque on nuts).
IMPORTANT: If mower is used under sandy soil
conditions, replace blades when air lifts become
eroded.
CHECK DRIVE BELT
Check drive belt for wear or damage. Replace belt if
worn or damaged. See Service and Adjustments.
CHECK ENGINE/BLADE CONTROL
The engine/blade control must stop the engine and
blade within 3 seconds after the bail is released. If the
engine or blade continues to run, adjust or repair
control immediately. See Adjustments.
CHECK GRASS BAG
Check bag for wear or damage. Keep bag clean and
dry. Replace only with Ariens original equipment
replacement bag.
CHECK DRIVE CONTROL
Check operation of drive control. The drive must
disengage completely when the bail handle is
released. Adjust bail travel if necessary. See
Adjustments.
GENERAL LUBRICATION
Mower does not require any lubrication. Wheel
assemblies are designed for long life without additional
lubrication.
Swivel Lubrication (swivel units)
See Figure 12.
NOTE: Linchpin must be in the swivel lock hole while
lubricating.
CHECK FASTENERS
Check all fasteners for proper tightness. Pay special
attention to blade hardware and all guards, shields and
safety devices.
CHECK SPARK PLUG
Spark plug should be cleaned (or replaced) if
necessary and gap reset to .030" every 100 hours of
operation or yearly, whichever comes first.
To clean:
1. Remove debris from area around spark plug
base.
2. Remove spark plug from engine.
OM0230
OM0240
Mulching Blade
1. Cutting Edge
2. Square Corner
3. Air Lift Erosion
4. Air Lift 5. Reverse Lift
Figure 10
1
2
3
4
1
2
3
4
5
Standard Blade
1. Blade
2. Cap Screw, Lock Washer & Flat Washer
3. Drive Belt
4. Idler
Figure 11
1
2
3
4
OM0250
1. Grease Fitting 2. Swivel Lock Hole
Figure 12
1
2
OM0180