Manual

Engine and Headlight
Ariens Dealers will provide any service which may
be required to keep your Sno-Thro operating at
peak efficiency. Should engine service be required,
it can be obtained from an Ariens dealer or an
authorized engine manufacturer's service center.
A
WARNING: Stop engine, remove key, wait
for moving parts to stop and remove wire
from spark plug (keep wire away from
spark plug to prevent accidental starting)
before any lubrication or maintenance
procedures.
A
CAUTION: DO NOT touch engine or Sno-
Thro drive parts which are hot from opera
tion. Allow such parts to cool before ser
vicing unit.
9.1 Engine Oil
Checking
The engine crankcase oil should be checked daily or
every 5 hours of operation. Oil level MUST be
maintained in safe operating range on dipstick at
all times or engine damage will result.
To check oil, park Sno-Thro on a flat level surface.
Wipe all debris from around dipstick, remove it and
wipe oil off. Screw dipstick assembly firmly but
slowly until cap bottoms on tube. Remove dipstick
and observe oil level. If low add clean fresh oil, of
same type and viscosity as is in engine, to bring oil
level to Full (F) mark (per engine manufacturer's
instructions).
IMPORTANT: DO NOT overfill. Level must not
exceed full (F) mark.
Changing
IMPORTANT: Change oil after first 5 hours of oper
ation, thereafter change oil every 25 hours of opera
tion (more often in dusty, dirty conditions). See
Engine Manufacturer's Instructions for proper type,
viscosity and amount required.
NOTE: Run engine just prior to changing oil. Oil
will flow more freely and carry away more conta
mination when warm.
Drain crankcase by removing oil drain plug (open
petcock on ST 1136). When oil has drained replace
plug (close petcock on AT 1136) and refill engine
crankcase with new oil of proper grade (per engine
manufacturer's instructions). Recheck oil level with
dipstick.
9.2 Engine Cooling
The engine is air cooled. Air must circulate freely
around engine from air intake screen, over cooling
fins on cylinder head and block to prevent over
heating.
Every 100 operating hours or yearly (more often if
conditions require) remove cooling shrouds and
clean cooling fins. Also clean external surfaces of
your engine of dust, dirt and oil deposits which can
contribute to improper cooling.
IMPORTANT: DO NOT operate engine with cooling
shrouds removed - this will cause overheating and
engine damage.
Fill crankcase with oil as recommended below.
Refer also to Engine Manufacturer's Instructions
supplied with the product. Check oil level before
each use and change oil regularly according to
Engine Manufacturer's Instructions.
9.3 Engine Oil Recommendations
Summer:
(Above 32° F)
SAE 30W or Substitutes:
10W30
Winter SAE 5W20, 5W30 or Substitute:
(Below 32° F) SAE 10W
9.4 Headlight
To replace lamp remove metal ring or remove lamp
from rubber housing.
A
CAUTION: When handling glass lamp
breakage may occur.
Disconnect electrical plug and assemble new lamp in
reverse order.
NOTE: Be sure headlight assembly is grounded at
headlight bracket for single wire models and at
terminal on two wire models.
9.5 Engine Air Cleaner
IMPORTANT: When using tractor with summer
attachments, install air cleaner and clean element
every 25 hours of operation (more often under
dusty-dirty conditions).
9-2