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Murray 620301 4B Serie Manual De Instrucciones página 12

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ENGL/SH
MAINTENANCE
CHART
CUSTOMER RESPONSIBILITIES
SERVICE RECORDS
Fill in dates as you
complete regular
service•
Check And Tighten All Screws and Nuts
Check Spark Piug
Before
First
Every
Every
Every
Each
2
5
10
25
Each
Before
Use
Hours
Hours
Hours
Hours
Season
Storage
SERVICE DATES
Check Drive Belt
Check Fuel
I
I
I
I
I
I
._
Drain Fuel
Lubricate Chute ControI Flange
MAINTENANCE
NOTE: Illustrations
begin on page 3.
Use the following maintenance
section to keep
your unit in good operating condition. All the
maintenance
information for the engine is in the
engine manufacturer's
instructions.
Before you
start the engine, read this book.
,_
WARNING:
Before you make an in-
spection, adjustment
(except
carburettor),
or repair, disconnect
the wire from the spark plug.
General Recommendations
The warranty on this snow thrower does not cov-
er items that have been subjected to operator
abuse or negligence. To receive full value from
the warranty, the operator must maintain the
snow thrower as instructed in this manual.
Some adjustments must be made periodically to
properly maintain the snow thrower.
After
Each Use
Check for any loose or damaged parts.
Tighten anyIoose
fasteners.
Check and maintain the auger'.
Check controls to make sure they are
functioning propedy.
If any parts are worn or damaged, reptace
immediately.
All adjustments
in the Maintenance
section of
this manuat should be checked at least once
each season.
How To Remove
The Top Cover
(Figure
9)
1. Remove the five screws (1) from the top
cover (2)•
2. Remove the top cover (2).
3. To instalI the top cover (2), reverse the
above steps.
Lubrication
Before Storage (Figure 9)
1. Lubricate the clute control flange (7). Apply
a clinging type of grease such as Lubriplate.
F-001023M
How To Adjust
The Chute
Crank
If the chute crank wiil not rotate fully to the left or
right, adjust as follows.
1. (Figure
11) Loosen nuts (1).
2. Move the crank adjusting
bracket (2) to
allow 1/8 inch (3mm) clearance (3) between
the notch in the flange (4) and the outer di-
ameter of the worm gear (5).
3. Tighten the nuts (f).
How To Adjust
The Auger
Control
Cable
The auger" control cable is adjusted at the facto-
ry. Dudng normal use, the auger control cable
can become stretched and the auger drive lever
wili not propedy engage or disengage the auger.
1. (Figure
12) Remove the "Z" hook (f) from
the auger drive lever (2).
2. (Figure
13) Slide the cable boot (3) off the
cable adjustment
bracket (4).
3. Push the bottom of the auger control
cable
(5) through the cable adjustment
bracket
(4) until the "Z" hook (6) can be removed.
4. Remove the "Z" hook (6) from the cable
adjustment
bracket
(4). Move the "Z" hook
(6) down to the next adjustment hole.
5. Pull the auger control
cable (5) up through
the cable adjustment
bracket (4).
6. Put the cable boot (3) over the cable ad-
justment
bracket (4).
7. (Figure
12) Instatl the "Z" hook (1) to the
auger drive lever (2).
8. To checkthe
adjustment,
start the snow
thrower. Make sure the auger does not rotate
when the auger drive lever is released.
How To Remove
The Belt Cover
(Figure
10)
1. The belt cover (1) is fastened with ten
screws (2). Remove all ten screws.
2. There are five screws on the front of the belt
cover (1). Three screws on the bottom of the
belt cover (1). Two screws on the top of the
belt cover (1).
3. Remove the belt cover (1).
4. To install the belt cover (1), reverse the
above steps.
NOTE: One screw (3) is shorter than the oth-
er screws. Make sure to install
screw (3) in
the correct
location.
12
How To Replace The Drive Belt
The drive beIt is of special construction and
must be replaced with original factory replace-
ment belt available from your nearest authorized
service center.
1.
2.
3.
Remove the belt cover. See "How To Re-
move The BeIt Cover".
(Figure 14) Remove the drive belt (1) from
the idler pulley (2).
Remove the drive belt (1) from the engine
pulley (3). Be careful, not to bend the beIt
guides (4).
4. (Figure 15) Remove the drive belt (1) from
the auger pulley (5).
5. Remove the old drive belt (1).
6. To install the new drive belt (f), reverse the
above steps.
7. Make sure the drive belt (1) is seated prop-
erly on the pulleys.
NOTE: When the auger control lever is
engaged,
the belt guides
(4) must be 1/16"
from the drive belt
(1).
8. Install belt cover. See "How To Remove The
Belt Cover".
How To Replace
The Auger
(Figure
16)
1. Remove the belt cover. See "How To Re-
move The Belt Cover".
2. Remove the drive belt. See "How To Replace
The Drive Belt".
3. Remove the auger pulley (1) from the auger
shaft (threads are ieft hand; turn ciockwise to
remove).
4. To keep the auger (6) from rotating, set a
2"x4" piece of wood (2) on the center
paddle (3) to secure auger (6).
5. Remove the fasteners from the bearing
as-
sembly (4). Remove the bearing assembly
(4) from the auger housing (5).
6. Slide the auger (6) out of the bearing assem-
bly on the right side of the snow thrower.
7. Tip the auger (6) enough to allow the auger
(6) to slide out of the auger housing (5).
8. To install auger (6), reverse the above steps.

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