11.
(Figure 15)
To check the adjustment,
depress the drive lever and check the
length
“A”
of the
drive spring (7).
In correct
adjustment, the
length “A”
of the
drive
spring (7)
is as follows:
minimum 3 inches (76 mm)
maximum 3-3/8 inches (85 mm).
12.
(Figure 14)
Install the
bottom panel (2)
.
13.Tighten the
bolts (3)
on each side of the
bottom panel (2)
.
How To Adjust The Belts
The belts will stretch during normal use. If you
need to adjust the belts due to wear or stretch,
proceed as follows.
How To Adjust The Auger Drive Belt
If the snow thrower will not discharge snow,
check the adjustment of the auger drive cable.
See “How To Check And Adjust The Cables” in
the Maintenance section. If the adjustment is
correct, then check the condition of the auger
drive belt. If the auger drive belt is damaged,
replace the auger drive belt. See “How To
Replace The Belts” in the Maintenance section.
If the auger drive belt is loose, adjust as follows.
1. Disconnect the spark plug wire.
2.
(Figure 18)
Remove
screw (2)
from
belt
cover (1)
. Remove the
belt cover (1)
.
3.
(Figure 19)
Loosen the
nut (2)
on the
idler
pulley (3)
Move the
idler pulley (3)
1/8 inch
(3 mm) toward the
auger drive belt (4)
.
4. Tighten the
nut (2)
.
5.
(Figure 22)
Depress the auger drive lever.
Check the tension on the
auger drive belt
(4)
. In correct adjustment, the
auger drive
belt (4)
will deflect
1/2 inch (12.5 mm) (5)
with moderate pressure. If the adjustment is
not correct, repeat the adjustment.
6.
(Figure 18)
Install the
belt cover (1)
. Tighten
screw (2)
.
7. Check the adjustment of the auger drive
cable. See “How To Check And Adjust The
Cables” in the Maintenance section.
8. Attach the spark plug wire.
Traction Drive Belt
The traction drive belt has constant spring
pressure and does not require an adjustment.
If the traction drive belt is slipping, replace
the belt. See “How To Replace The Belts” in
the Maintenance section.
How To Replace The Belts
The drive belts are of special construction and
must be replaced with original factory
replacement belts available from your nearest
authorized service center.
Some steps require the assistance of a second
person.
How To Remove the Auger Drive Belt
If the auger drive belt is damaged, the snow
thrower will not discharge snow. Replace the
damaged belt as follows.
1. Disconnect the spark plug wire.
2.
(Figure 14)
Loosen the
bolts (3)
on each
side of the
bottom panel (2)
.
3. Remove the
bottom panel (2).
4.
(Figure 18)
Remove
screw (2)
from
belt
cover (1)
. Remove the
belt cover (1)
.
5.
(Figure 19)
Loosen the
belt guide (9).
Pull
the
belt guide (9)
away from the
engine
pulley (10).
6. Pull the
idler pulley (3)
away from the
auger
drive belt (4)
and slip the
auger drive belt
(4)
off of the
idler pulley (3)
.
7. Remove the
auger drive belt (4)
from the
engine pulley (10).
To remove the
auger
drive belt (4),
the
engine pulley (10)
may
have to be partially rotated.
8.
(Figure 20)
Remove the top four
bolts (21)
that hold together the
auger housing (22)
and the
motor box (23)
. Loosen the bottom
two
bolts (24).
The
auger housing (22)
and
the
motor box (23)
can now be split apart for
removal of the belt.
9.
(Figure 19)
Remove the old
auger drive
belt (4)
from the
auger drive pulley (11)
.
Replace the
auger drive belt (4)
with an
original factory replacement belt available
from an authorized service center.
10.Install the new
auger drive belt (4)
onto the
auger drive pulley (11)
.
11. Assemble the
auger housing (22)
to the
motor box (23)
with the four
bolts (21)
that
were removed in step 8. Tighten the bottom
two
bolts (24).
12.Install the
auger drive belt (4)
onto the
engine pulley (10)
.
13.Slip the
auger drive belt (4)
under the
idler
pulley (3)
.
14.Adjust the
auger drive belt (4)
. See “How To
Adjust The Auger Drive Belt” in the
Maintenance section.
15.Adjust the
belt guide (9)
. See “How To
Adjust The Belt Guide” in the Maintenance
section.
16.
(Figure 18)
Install the
belt cover (1)
. Tighten
screw (2)
.
17.Check the adjustment of the cables. See
“How To Check And Adjust The Cables” in
the Maintenance section.
18.Connect the spark plug wire.
How To Remove the Traction Drive Belt
If the snow thrower will not move forward, check
the traction drive belt for wear or damage. If the
traction drive belt is worn or damaged, replace
the belt as follows.
1. Disconnect the spark plug wire.
2. Remove the auger drive belt. See “How To
Remove The Auger Drive Belt” in the
Maintenance section.
3.
(Figure 19)
Remove the
e
�
ring (17)
from
one end of the
swing plate axle rod (18).
Remove the
swing plate axle rod (18)
to
allow the the swing plate to pivot forward.
4. Remove the
traction drive spring (16).
5. Remove the old
traction drive belt (13)
from
the
traction drive pulley (14)
and from the
engine pulley (15)
. Replace the
traction
drive belt (13)
with an original factory
replacement belt available from an
authorized service center.
6. Install the new
traction drive belt (13)
onto
the
traction drive pulley (14)
and onto
engine pulley (15)
.
7. Make sure the
traction drive idler pulley
(12)
is properly aligned with the
traction
drive belt (13)
.
8. Attach the
traction drive spring (16).
9. Install the
swing plate axle rod (18)
and
secure with the
e�ring
(17)
removed earlier
.
10.
(Figure 31)
The bottom of the
swing plate
(20)
must be positioned between the
alignment tabs (19).
Make sure the
swing
plate (20)
is properly secured.
NOTE: If the drive will not engage after
the traction drive belt has been replaced,
then check to make sure that the swing
plate is positioned between the alignment
tabs (19).
11.
(Figure 19)
Install and adjust the
auger
drive belt (4)
. See “How To Remove The
Auger Drive Belt” in the Maintenance section.
12.Adjust the
belt guide (9)
. See “How To
Adjust The Belt Guide” in the Maintenance
section.
13.
(Figure 14)
Install the
bottom panel (2)
.
14.Tighten the
bolts (3)
on each side of the
bottom panel (2)
.
15.
(Figure 18)
Install the
belt cover (1)
. Tighten
screw (2)
.
16.Check the adjustment of the cables. See
“How To Check And Adjust The Cables” in
the Maintenance section.
17.Connect the spark plug wire.
How To Adjust The Belt Guide
1. Disconnect spark plug wire.
2.
(Figure 18)
Remove
screw (2)
. Remove the
belt cover (1)
.
3.
(Figure 1)
Engage the
auger drive lever (5)
.
4.
(Figure 24)
Measure the distance between
the
belt guide (2)
and
auger drive belt (3)
.
The
correct distance (4)
is 1/8 inch (3 mm).
5. If an adjustment is necessary, loosen the
mounting bolt for the
belt guide (2)
. Move
the
belt guide (2)
to the
correct position
(4)
. Tighten the mounting bolt for the
belt
guide (2)
.
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 14)
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 Neutral speed.
12
Summary of Contents for SP-SB2621
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Page 2: ...1 7 19 17 5 1 2 6 3 4 20 21 11 10 12 8 9 14 15 13 02 ...
Page 5: ...Stop engine and remove keys when performing maintenance on equipment 05 ...
Page 15: ...2 2 GB5780 M8x45 2 GB6184 M8 15 ...
Page 16: ...3 4 6 2 3 1 7 5 6 2 1 5 4 6 7 3 15 5 18 11 1 12 16 4 1 2 3 4 16 ...
Page 17: ...8 9 9 1 2 10 11 5 6 7 12 1 2 2 13 1 1 2 1 8 1 2 8 3 17 ...
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