Change Engine Oil; Check Spark Plug; General Lubrication - Ariens 911330- LM21SW Owner's Manual

CHECK DRIVE BELT
propelled models)
Check drive belt and replace if worn or
damaged. See DRIVE BELT
REPLACEMENT (self-propelled models) on
page 20.
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

REPLACE OIL FILTER (911396)
Replace oil filter every 100 hours of use or
every season.
1. Change engine oil.
2. Clean around filter.
3. Turn filter counterclockwise to remove
(Figure 10).
4. Apply a thin coat of oil onto seal of new
filter.
5. Install new filter and hand tighten
securely.
(self-
Figure 10
Swivel Wheels (911330, 334, 396)
See Figure 11.
Use Mix Hi-Temp Grease or equivalent on the
lube fittings. Order P/N: 00036800 - 3 pack of
3 oz. cartridges.
Lube Fitting

CHECK SPARK PLUG

Spark plug should be replaced every 100
hours of operation or each year.
NOTE: Loose spark plug wire terminals can
cause sparking. Replace terminal if
damaged.
CHECK ENGINE COOLING
WARNING: HOT SURFACES can
cause death or serious injury. DO
NOT TOUCH parts which are hot
from operation. ALWAYS allow
parts to cool.
To prevent overheating, air must circulate
freely around the cooling fins, cylinder head
and block.
Every 100 hours of operation or yearly (more
often if conditions require) remove blower
housing and clean cooling fins. See engine
manual for instructions.
CHECK MUFFLER
Check muffler for debris, cracks, wear, or
other damage.
CAUTION: Replace worn-out
mufflers immediately. Continued
use could result in fire or explosion.
GB - 18
Figure 11
OM1282