Check Wheel Drive Control; Check Grass Bag; Check Mower Blade; Check Drive Belt - Ariens 911086 - LM21, 911087 - LM21S Owner's/Operator's Manual

CHECK WHEEL DRIVE CONTROL

(self-propelled models)
The unit must stop quickly and completely
when the control is released. Adjust or repair if
necessary. See Service and Adjustments.

CHECK GRASS BAG

Check grass bag frequently for wear or
deterioration. Replace worn or damaged bag
with Ariens original equipment replacement
bag only.
CLEAN UNIT
Before each use clean unit, muffler and engine
surfaces of debris, oil or fuel spills to ensure
proper cooling and prevent fires.
CHECK ENGINE OIL
IMPORTANT: Proper oil level must be
maintained at all times or engine damage will
result.
Check the level of the engine crankcase oil
before each use.
Make sure engine is level when checking oil.
See engine manual for instructions.

CHECK MOWER BLADE

See Figure 7.
Check blade mounting: blade must be secure
and bolt torqued to 37.5 - 50 ft. lbs. (bolt
should fully compress lock washer).
Check blade for nicks and dull cutting edges.
Sharpen if necessary.
Check blade for rounded or broken ends,
thinned metal or other damage. Replace if
necessary.
NOTE: Blades should be sharpened and
balanced professionally. Contact your Ariens
Dealer.
To remove blade:
1. Block blade to prevent rotation.
2. Remove bolt, lock washer, flat washer
and blade from shaft.
To install blade:
1. Replace blade, flat washer, lock washer
and bolt on shaft.
2. Torque bolt to 37.5 - 50 ft. lbs. (bolt
should fully compress lock washer).
1

CHECK DRIVE BELT

Check drive belt and replace if worn or
damaged. See Service and Adjustments.
CHECK FASTENERS
Check all fasteners for proper tightness. Pay
special attention to blade hardware and all
guards, shields and safety devices.
CHECK AIR CLEANER
See engine manual for specific information.

CHANGE ENGINE OIL

IMPORTANT: Change engine crankcase oil
after first five (5) hours of operation. Then
change oil after every 25 hours of operation.
Refer to engine manual for instructions and
proper oil type.
IMPORTANT: Proper oil level must be
maintained at all times or engine damage will
result. DO NOT overfill. Be sure engine is level
when adding oil.

GENERAL LUBRICATION

Mower
Mower requires no lubrication.

CHECK SPARK PLUG

Spark plug should be replaced every 100
hours of operation or each year.
GB - 14
3
Replace
OM0246
1. Cutting Edge
2. Square Corner
3. Air Lift
4. Air Lift Erosion
Figure 7
2
1
OM0235
4