Ariens SNO-THRO 937 - Manual (Page 13)

Lubrication and Maintenance (Continued)
When replacing belts, replace both belts at same
time. To replace drive belts, disconnect extension
spring and relieve compression of compression
spring on pivot bracket.
Remove idler pin from idler and bracket then idler
from machine.
Remove two hair pins from bracket pin. Cap screw
from pin plate and pin and plate from unit.
Remove pivot bracket and belts from unit.
Install new belts in reverse order.
NOTE: Make sure pulleys align. If-alignment is
necessary, loosen pin plate cap screw, align belts
and tighten cap screw.
Auger Gear Case
IMPORTANT: Too much lubricant may cause
excessive leakage. Too little lubricant will cause gear
and/or bearing darhage.
1. Auger Gear Case
2. Gear Lube Fill
3. Ariens Special L-2 Gear Lube
Figures: Auger Gear Case
Gear cases are filled to the correct level at the
factory. Unless there is evidence of leakage, no
additional lubricant should be required. Check for
evidence of leakage every 25 hours of operation.
To insure adequate oil level, (2 oz. mininum), the
following checking procedure is recommended,
especially if there is evidence of leakage. Find a flat
level surface adjacent to a vertical surface (floor next
to wall or post etc). Make a mark on the vertical
surface with marker or tape 10.0 inches up from the
flat level surface. (One inch wide masking or
wrapping tape works especially well).
Remove the gear case oil fill plug. Wipe the inside
end clean with a soft cloth and replace finger tight.
Move the front of the sno thro near the vertical
surface and slowly raise the handlebars until the
mark is seen at the top of the auger/impeller housing.
Count to 100 while holding at the position to insure
that the lubricant has had time to seek a stable level.
Return the sno thro to its level operating position and
remove the gear case oil fill plug to determine if the
end previously wiped clean has been “wetted” by the
lubricant. If so, lubricant level is adequate. Replace
the fill plug.
When adding lubricant, add only Ariens special gear
lube L-2 (Part Number 000080). After adding
lubricant, you may want to check to insure the level is
not too high. To do this, repeat the above procedure
with the mark on the vertical surface one inch higher.
Allow plenty of time to drain at this position with the
fill plug removed. 5 inch high blocks inserted under
the wheels of all models serve well to hold them in a
“drain-to-maximum-level” position.
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