Murray 6291500X61 Instruction Book page 14

6. (Figure 18) Install the belt cover (1). Tighten
screw (2).
7. Connect the spark plug wire.
How To Adjust Or Replace The Friction
Wheel
How To Check The Friction Wheel
If the snow thrower will not move forward, check
the traction drive belt, the traction drive cable or
the friction wheel. If the friction wheel is worn or
damaged, it must be replaced. See "How To
Replace the Friction Wheel" in this section. If the
friction wheel is not worn or damaged, check as
follows.
1. (Figure 1) Remove the gas from the gas
tank. Stand the snow thrower up on the front
end of the auger housing (4).
WARNING: Drain the gasoline
outdoors, away from fire or flame.
2. Disconnect the spark plug wire.
3. (Figure 22) Loosen the bolts (3) on each
side of the bottom panel (2).
4. Remove the bottom panel (2).
5. (Figure 1) Position the shift speed lever (6)
in the lowest forward speed.
6. (Figure 24) Note the position of the friction
wheel (4). The correct distance "A" from the
right side of the friction wheel (4) to the
outside of the motorbox is as follows:
Tire Size Distance "A"
12 and 13 inch 4-1/8" (10.5 cm)
16 inch 4-5/16" (10.95 cm)
If the friction wheel (4) is not in the correct
position, adjust as follows.
How To Adjust The Friction Wheel
1. (Figure 1) Position the shift speed lever (6)
in the lowest forward speed.
2. (Figure 9) Loosen hex jam nut (9) on speed
select rod (2).
3. (Figure 24) Move the friction wheel (4) to
the correct position.
4. (Figure 9) Turn the adaptor (10) until the
ball joint (6) is aligned with the mounting
hole in the shifter rod (7). When aligned,
attach the ball joint (6) to the shifter rod (7).
5. (Figure 22) Install the bottom panel (2).
6. Tighten the bolts (3) on each side of the
bottom panel (2).
How To Replace The Friction Wheel
If the friction wheel is worn or damaged, the
snow thrower will not move forward. The friction
wheel must be replaced as follows.
1. (Figure 1) Remove the gas from the gas
tank. Stand the snow thrower up on the front
end of the auger housing (4).
WARNING: Drain the gasoline
outdoors, away from fire or flame.
2. Disconnect the spark plug wire.
3. (Figure 28) Remove the fasteners that
secure the left wheel (10). Remove the left
wheel (10) from the axle (11).
4. Loosen the bolts (3) on each side of the
bottom panel (2).
5. Remove the bottom panel (2).
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6. (Figure 29) Remove the fasteners that
secure the drive sprocket (12) to the axle
(11).
7. Remove the right wheel, axle (11), and drive
sprocket (12).
8. (Figure 30) Remove the four bolts (16) that
hold the bearings (7) on each side of the
hex shaft (8).
9. (Figure 31) Remove the hex shaft (8) and
bearings (7).
NOTE: Take special note of the position of
the washers (17).
10. (Figure 26) Remove the three fasteners (4)
that hold the friction wheel (5) to the hub
(6).
11. (Figure 26) Remove the friction wheel (5)
from the hub (6). Slip the friction wheel (5)
off the hex shaft (8).
12. Assemble the new friction wheel (5) onto
hub (6) with the fasteners removed earlier.
13. (Figure 31) Install the hex shaft (8) and
bearings (7) with the four bolts removed
earlier.
Make sure the washers (17) are properly
installed in the original position. Also,
make sure the two washers (13) are
properly aligned with the actuator
arms (14).
14. Make sure the hex shaft (8) turns freely.
15. (Figure 29) Install the right wheel, axle (11),
and drive sprocket (12) with the fasteners
removed earlier. Install the chain (15) onto
the drive sprocket (12).
16. Check the adjustment of the friction wheel.
See "How To Adjust The Friction Wheel" in
this section.
17. Make sure the friction wheel and the disc
drive plate are free from grease or oil.
18. (Figure 22) Install the bottom panel (2).
19. Tighten the bolts (3) on each side of the
bottom panel (2).
20. Install the left wheel (10) to the axle (11)
with the fasteners removed earlier.
21. Connect the spark plug wire.
How To Replace the Auger Shear Bolt
The augers are secured to the auger shaft with
special shear bolts. These shear bolts are
designed to break and protect the machine if an
object becomes lodged in the auger housing. Do
not use a harder bolt as the protection provided
by the shear bolt will be lost.
WARNING: For safety and to
protect the machine, use only
original equipment shear bolts.
To replace a broken shear bolt, proceed as
follows. Extra shear bolts were provided in the
assembly parts bag.
1. (Figure 1) Move the stop switch (13) to the
stop position. Disengage all controls.
2. Disconnect the spark plug wire. Make sure
all moving parts have stopped.
3. (Figure 14) Lubricate the auger shaft Zerk
fitting (1), if equipped, with a grease gun.
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4. (Figure 25) Align the hole in the auger with
the hole in the auger shaft. Install the new
shear bolt (2), spacer (3), and locknut (4).
5. Connect the spark plug wire.
How To Prepare The Snow Thrower For
Storage
WARNING: Do not remove gasoline
while inside a building, near a fire,
or while you smoke. Gasoline
fumes can cause an explosion or a fire.
If the snow thrower is to be stored for an
extended period, refer to the engine
manufacturer's operating manual (included with
some models) for important maintenance or
storage details.
1. Drain the fuel tank.
2. Let the engine run until it is out of gasoline.
3. Never store the snow thrower with fuel in the
tank inside a building where ignition sources
are present such as hot water and space
heaters, clothes dryers, and the like. Allow the
engine (motor) to cool before storing in any
enclosure.
4. Drain the oil from the warm engine. Fill the
engine crankcase with new oil.
5. Remove the spark plug from the cylinder.
Pour one ounce (29.5 ml) of oil into the
cylinder. Slowly pull the recoil−start grip so
that the oil will protect the cylinder. Install a
new spark plug in the cylinder.
6. Remove the spark plug and pour about 15 ml
(1/2 oz) of engine oil into the cylinder.
Replace the spark plug and crank slowly to
distribute the oil.
7. Thoroughly clean the snow thrower.
8. Lubricate all lubrication points. See the
Maintenance section.
9. Be sure that all nuts, bolts and screws are
securely fastened. Inspect all visible moving
parts for damage, breakage and wear.
Replace if necessary.
10. Cover the bare metal parts of the blower
housing, auger, and the impeller with spray
rust preventative lubricant.
11. Put the unit in a building that has good
ventilation. Store in a clean and dry area, but
NOT near a stove, furnace or water heater
which uses a pilot light or any device that can
create a spark.
12. If the machine must be stored outdoors,
block up the snow thrower to be sure the
entire machine is off the ground.
13. Cover the snow thrower with a suitable
protective cover that does not retain
moisture. Do not use plastic.
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