Craftsman 4 Hp Snowblower Manual

							SEARS

owners
manual

Models
C950-52474-7
4 H.P. 21 Inch
C950-52475-7

5
H.P.
23
Inch
C950-52677-7

8
H.P. 25 Inch
• Assembly
• Operating
Instructions
• Replacement
Parts
• Warranty
CAUTION:

You must read and
understand this owners
manual before operating
unito
Serial No. _

CRAFTSMAN®

DUAL STAGE
SNOWBLOWER

SEARS CANADA
288 .
INC., TORONTO,
ONTARIOM5B

litho in Canada
Part No. 7524
Issue 5/87A 
						

							
AOANGERA

Gasoline is flammable and caution must be used whenhandling or storing il. Do not fili fuel tank while snow-blower is running, hot, or when snowblower Is in an enclo-sed area. Keep away from open flame, electrical spark,and DO NOT SMOKE while filling the fuel tank. Never filifuel tank completely; but fili the tank to within 1/4-1/2 inchfrom top to provide space for expansion of fuel. Alwaysfili fuel tank outdoors and use a funnel or spout to pre-vent spilling. Make sure to wipe up any spilled fuel beforestarting the engine.
Store gasoline in a clean, approved container, and keepthe cap in piace on the container. Keep gasoline in a coolwell ventilated piace; never in the house. Never buy moretllan a 30 day supply of gasoline to assure volatility. Gaso-line is intended to be used as a fuel for internai combus-tlon engines; therefore, do not use gasoline for any otherpurpose. Since many chlldren like the smell
01
gasoline,keep it out of their reach because the fumes are dange-rous to inhale, as well as being explosive.

5. Check to make sure that spark plug is tightened
securely into engine and spark plug wire is attached
to spark plug. Il torque wrench is available, torque
plug to 18-23 ft-Ibs.
To Start Engine
Be sure that engine has sufficient oil.
The snowblower engine is equipped with a recoil start-
ero The speed of this engine is controlled by the throt-
tle controllever (Figure 10). Before starting engine, be
certain that you have read and followed ali instructions
on the preceding pages.
Cold Engine Start (Recoil Starter)
(See figure 10 on page 7).
(Engine has not been run recently.)
1. Be sure auger drive clutch lever and traction drive
clutch lever are in the disengaged position,
RELEASED
2. Move throttle control (UP) to FAST position. Insert
key into ignition slot. Be sure it snaps into piace
(Figure 10). Do not turn key.
3. Aotate choke knob lo FULL choke position.
NOTE: Do noi choke a warm engine. (See Warm
Engine Start.)
4. Push primer button(Figure 10) 2 times. NOTE: Do
not prime a warm engine. (See warm Engine Start.)
5. PiJII starter handle (Figure 10) rapidly. NOTE: Do
not allow handle to snap back, but allow it to rewind
slowly while keeping a firm hold on the starter
handle.
6. As engine warms up and begins to operate evenly,
rotate choke knob slowly to OFF position. If engine
falters, return to 1/2 choke until it runs smoothly.
then move to OFF choke position.NOTE: Allow the
engine to warm up for a few minutes as the engine
will not develop full power until it reaches operating
temperature.
7. Aun engine at or near top speed.
8. To stop engine, move throttle control lever to stop
position and remove key. Do not turn key.
Warm Engine Start (Recoil Starter)
(Engine stili warm from recent running.)
1. Be sure auger drive clutch lever and traction drive
clutch lever are in the disengaged position,
RELEASED
2. Move throttle control (UP) to FAST position. Insert
key into ignition slot. Be sure it snaps into piace.
(Figure 10). Do not turn key.
3. Aotate choke knob lo OFF posilion. Do not use
primer button.
4. Pull starter handle (Figure 10) rapidly. NOTE: Do
not allow handle lo snap back, but allow il to rewind
slowly while keeping a firm hold on the starter
handle.

OIL FILL CAP/DIPSTlCK
CARBURETOR .COVER
OIL ORAIN PLUG
FIGURE 10

5. If engine fails to start after a reasonable number of
starting attempts rotate choke knob to FULL posi-
tion and repeat instruction number 4.
When engine starts, rotate choke knob gradually to
OFF position.
6. Run engine at or near top speed.
7. To stop engine, move throttle control lever to stop
position and remove key. Do not turn key.
IMPORTANT: To help prevent possible freeze-up of
rewind starter and engine controls, proceed as follows
after each snow removal job.
1. With engine running, pull starter rope hard with a
continuous full arrn stroke three or four times. Pul-
ling of starter rope will produce a loud clattering
sound. This is not harmful to the engine or starter.
7 
						

							
2.
With engine not running wipe ali snow and
moisture fram carburetor cover (Figure 10) in area
of contrai levers. Also move controllevers backward
and forward several times.
IMPORTANT: After each use of the snowblower, stop
the engine, remove the ignition key, remove ali accu-
mulated snow
tram
the snowblower and wipe clean.
Store the snowblower in a protected area.
Never cover snowblower while engine and exhaust
area are stili warm.
DO NOT LOSE IGNITION KEY. KEEP IT IN A
SAFE PLACE. ENGINE WILL NOT START
WITHOUT IGNITION KEY.
USE OF ELECTRIC ST ARTER
On models so equipped

A
WARNING: THIS STARTER IS EQUIPPEO
.. WITH A THREE-WIRE POWER CORO ANO
PLUG ANO IS DESIGNEO TO OPERATE ON 120
VOL T AC HOUSEHOLO CURRENT. IT MUST BE
PROPERL Y GROUNOEO AT ALL TIMES TO AVOlO
THE POSSIBILlTY OF ELECTRIC SHOCK WHICH
MAY BE INJURIOUS TO THE OPERATOR. FOLLOW
ALL INSTRUCTIONS CARE FULL Y AS SET FORTH
BELOW. OETERMINE THAT YOUR HOUSE WIRING
IS A THREE·WIRE GROUNOEO SYSTEM. ASK A
LlCENSEO ElECTRICIAN IF YOU ARE NOl SURE.
IF YOUR HOUSE WIRING SYSTEM IS NOT A THREE-
WIRIi GROUNOED SYSTEM, DO NOT USE THIS
ElECTRIC ST ARTER UNOER ANY CONOITION. IF
YOUR SYSTEM IS GROUNOED ANO A THREE-HOlE
RECEPT AClE IS NOT AVAILABLE AT THE POINT
YOUR ST ARlER WllL NORMALL Y BE USEO, ONE
SHOULO BE INST AllEO BY A LICENSEO ElEC-
TRICIAN.

A
WARNING: WHEN CONNECTING 120 VOlT
.. POWER CORO, ALWAYS CONNECT CORO
TO SWITCH BOX ON ENGINE FIRSl, ANO THEN
PlUG THE OTHER END INTO THREE-HOLE
GROUNDEO RECEPT ACLE.

A
WARNING: WHEN OISCONNECTING
.. POWER CORO, AlWAYS UNPLUG lHE
END IN THE THREE-HOLE GROUNOED RECEPT A-
CLE FIRST.
çold Engine Start (Electric Starter)
(See figures 11 and 11 A on page 8)
(Engine has not been run recently.)
NOTE: DO NOT USE PRE-SlARTING PRIMER
WHEN USING 120 VOL l ELECTRIC ST ARTER.
1. Be sure auger drive clutch lever and traction drive
clutch lever are in the disengaged position,
 RELEASEO.
2. Move Throttle Control (UP) to Fast position. Insert
key into ignition slot. Be sure it snaps into piace.
(Figure 11). Do not turn
key.

3.
Rotate CHOKE knob to OFF (Figure 11).

4.
Connect POWER CORO to SWITCHBOX. (Figure
11 A)
OIL FIL CAP/DIPSTICK
.........5TARTERHANDLE
IGNITION KEVTHAOTTLE CONTROLOIL DRAIN PLUG LEVER
FIGURE 11
ELECTRIC 5T ARTER
FIGURE 11A
5. Plug other end of POWER CORO into a three hole,
GROUNDED 120V, AC receptacte. (See warning
at beginning of these instructions).
6. START ENGINE:
A. Push STARTER BUTTON (Figure 11A) to
engage starter motor and crank engine.
B. Move CHOKE on engine to Full while cran-
king engine.

8 
						

							NOTE: THIS ELECTRIC ST ARTER IS THER-
MALLV PROTECTEO. IF OVERHEATED IT
WILL STOP AUTOMATICALL V, ANO CAN BE
REST ARTEO ONL V WHEN IT HAS COOLEO
TO A SAFE TEMPERATURE. (A WAIT OF
ABOUT 5 TO 10 MINUTES IS REQUIREO:j
C. When engine starts, release ST ARTER BUT-
TON and move CHOKE gradually to Off.
D. If engine falters, move CHOKE immediately to
Full and then gradually to Off.
E. Disconnect POWER CORO trom receptacle,
first, and then trom SWITCHBOX.
7. As engine warms up and begins to operate evenly,
rotate choke knob slowly to OFF position. It engine
talters, return to 1/2 choke until it runs smoothly,
then move to OFF choke position. NOTE: Allow the
engine to warm uptoratewminutes as the engine
will not develop tull power until it reaches operat-
ing temperature.
8. Run engine at or near top speed.
9. To stop engine, move throttle control lever to stop
position and remove key. Do not turn key.
It, after following the preceding instructions, your en-
gine tails to start, have it checked by your nearby Autho-
rized Sears Service Outlet.
Warm Engine Start (Electric Starter)
(Engine stili warm from recent running). Proceed with
the following instructions.
NOTE: Warm engine may start without choking.
NOTE: WARNING PERTAINING TO SAFE USE
OF 3-WIRE GROUNDED ELECTRICAL SYSTEM, ON
PAGE 8. ELECTRIC STARTER - 120 VOLT AC
ALSO APPLIES TO THESE INSTRUCTIONS. REVIEW
THIS WARNING BEFORE PROCEEDING.
NOTE: DO NOT USE PRE-STARTING PRIMER
WHEN USING 120 VOLT ELECTRIC STARTER.
1. Be sure auger drive clutch lever and traction drive
clutch lever are in the disengaged position,
RELEASED .
2. Move Throttle Control (UP) to Fast position. In-
sert key into ignition slot. Be sure it snaps into piace.
(Figure 11) Do not turn key.
3. Rotate CHOKE knob to OFF (Figure 11).
4. Connect POWER CORO to SWITCHBOX. (Figure
11A)
5. Plug other end of POWER CORO into a three hole,
GROUNDED 120V, AC receptacle. (See warning
at beginning of these instructions).
6. START ENGINE:

A.
Push ST ARTER BUTTON (Figure 11A) to en-
gage starter rnotor and crank engine.
B. Move CHOKE on engine to Full while crank-
ing engine.
NOTE: THIS ELECTRIC ST ARTER IS THER-
MALL V PROTECTEO. IF OVERHEATEO IT
WILL STOP AUTOMA TICALL Y, ANO CAN BE
REST ARTEO ONL V WHEN IT HAS COOLEO
TO A SAFE TEMPERATURE. (A WAIT OF
ABOUT 5 TO 10 MINUTES IS REQUIREO.)
C. When engine starts, release STARTER BUT-
TON and move CHOKE gradually to Off.
D. If engine falters, move CHOKE immediately to
Full and then gradually to
Oft.

E. Disconnect POWER CORO trom receptacle,
first, and then from SWITCHBOX.
7. Run engine at or near top speed.
8. To stop engine, move throttle control lever to stop
position and remove key. Do not turn key.
If, after tollowing the preceding instructions, your en-
gine tails to start, have it checked by your nearby Autho-
rized Sears Service Outlet.
DO NOT LOSE IGNITION KEY. KEEP IT IN A
SAFE PLACE. ENGINE WILL NOT START
WITHOUT IGNITION KEY.

9 
						

							Snowblower Operation
The most effective use of the snowblower will be es-
tablished by experience, taking into consideration the
terrain, wind conditions and building location which will
determine the diraction of the discharge chute.
NOTE: Do not blow snow towards a building as hid-
den objects could be blown with sufficient force to
cause damage.
1 . Start the engine as described in paragraph To Start
Engine.
ENGINE WILL NOT ST ART
UNLESS IGNITION KEY IS
INSERTED INTO IGNITION
SLOT IN CARBURETOR
COVER. DO NOT TURN
IGNITION KEY.
IGNITION KEY

2. Adjust snow chute deflector.
3. Using crank, position the discharge chute lo
discharge snow with the wind.
4. Select proper speed for snow conditions as outlined
below and set speed select lever to desired position.
NOTE: Always release traction drive clutch lever
before moving speed select lever.
Ground speed is determined by snow conditions. Select
Ihe speed you desire by moving the speed selector into
the appropriate coloured area on the control pane!.
Red - Wel, Heavy, Slushy, Extra Deep
Amber - Moderate
White - Very Light
Green - Transport Only
For additional operating instructions see OPERATING
TIPS page 18.
5. Engage auger drive clutch lever (right hand).
IMPORTANT: Be sure front of unit is clear of
bystanders or obstacles before operating.

AUGER DRIVECLUTCH LEVERDISENGAGED
TRACTION DRIVECLUTCH LEVERDISENGAGED
FIGURE 12

ìì
6. Engage traction drive clutch lever (Ieft hand). As the
snowblower starts to move, maintain a firm hold on
the handles and guide the snowblower along the
cutting path. Do not attempt to push the
snowblower.
7. To stop forward motion, release traction drive clutch
lever (Ieft han d).
8. To stop auger, release auger drive clutch lever (right
hand).
9. To move the snowblower backwards, move speed
select lever into first or second reverse and engage
traction drive clutch lever (Ieft hand). To stop,
release traction drive clutch lever.

A
DANGER
A

Never run engine Indoors or in enclosed, poorly ventilatedareas. Engine exhausl contains CARBON MONOXIDE, anODORLESS and DEAOL Y GAS.
Keep hands, leet, hair and loose clothing away trom anymoving parts on engine and snowblower.
WARNING - Temperature of muffler and nearby areasmayexceed 150°F. Avoid these areas.
DO NOT allo w children or young teenagers to operate orbe near snowblower while it is operating.

ADANGERA

Do not attempt to remove any item that may becomelodged in auger without taking the following precautions:
1. Release auger and drive clutch levers.2. Move throttle lever lo STOP position.3. Remove ignition key.4. Disconnect spark plug wire.5. Do not piace your hands in the auger or dischargechute. Use a pry bar.

10