MTD 769-04164 - Manuel (Page 12)

12
Always stop engine,
disconnect spark
plug, and ground
against engine before
cleaning, lubricating
or doing any kind
of maintenance or
adjustments on your
machine.
WARNING
6
Maintenance
& Service
General Recommendations
1. Always observe safety rules when performing any
maintenance.
2. The warranty on this snow thrower does not cover
items that have been subjected to operator abuse or
negligence. To receive full value from the war-
ranty, operator must maintain the snow thrower as
instructed in this manual.
3. Periodically check all fasteners and hardware to
make sure these are tight.
WARNING: Before servicing, repairing,
lubricating or inspecting, disengage all
controls and stop engine. Wait until all
moving parts have come to a complete
stop. Disconnect spark plug wire and
ground it against the engine to prevent
unintended starting. Always wear safety
glasses during operation or while per-
forming any adjustments or repairs.
Shave Plate and Skid Shoes
The shave plate and skid shoes on the bottom of the
snow thrower are subject to wear. They should be
checked periodically and replaced when necessary.
To remove skid shoes:
1. Remove the four carriage bolts and hex flange nuts
which secure them to the snow thrower.
2. Reassemble new skid shoes with the four carriage
bolts (two on each side) and hex flange nuts. Refer
to Figure 9.
To remove shave plate:
1. Remove the carriage bolts and hex nuts which attach
it and the skid shoes to the snow thrower housing.
2. Reassemble new shave plate, making sure heads of
carriage bolts are to the inside of housing. Tighten
securely.
Augers
• The augers are secured to the spiral shaft with two
shear pins and cotter pins. If the auger should strike
a foreign object or ice jam, the snow thrower is
designed so that the pins may shear.
• If the augers will not turn, check to see if the pins
have sheared. When replacing pins, spray an oil
lubricant into shaft before inserting new pins.
Lubrication
1. Lubricate pivot points on the auger control and drive
control with a light engine oil once a season. See
Figure 10.
2. Lubricate the face of the auger idler bracket with a
light weight cold weather lubricant at least once a
season. See Figure 10.
Engine
Refer to the separate engine manual packed with your
unit for all engine maintenance.
Check V-Belts
Follow instructions below to check condition of drive belts
every 50 hours of operation.
1. Remove the plastic belt cover on the front of the
engine by removing the self-tapping screw and press-
ing the plastic tabs to release the belt cover.
2. Visually inspect for frayed, cracked, or excessively
worn out belts. Replace, if necessary.
Replacing Belts
NOTE: There are two belts on this snow thrower: an
auger belt and drive belt. It is recommended that both
belts be replaced at the same time.
1. Remove the spark plug wire from spark plug and ground it
against the engine to prevent accidental starting.
2. Drain gasoline from the gas tank, or place a piece
of plastic sheet underneath the gas cap to prevent
gasoline leakage.
Figure 10
NOTE: If auger contin-
ues to rotate with the
control disengaged,
shut off engine and
re-adjust.
Lubricate
Lubricate
Figure 9
Shear Pin
Cotter Pin
Carriage
Bolt
Shave Plate
Hex Nut
Skid Shoe
Carriage
Bolt
Hex Nut
NEVER replace the
auger shear pins with
standard pins or fas-
teners. Any damage
to the auger gearbox
or other components,
as a result of doing
so, will NOT be
covered by your snow
thrower’s warranty.