McCulloch 96188000300 User Manual

MC621

Owner's Manual

MC621

CONGRATULATIONS on your purchase of a new snow thrower. It has been designed, engineered and man u fac tured to

give best possible dependability and per for mance.
Should you experience any problem you cannot easily remedy, please contact your nearest authorized service center. We

have competent, well-trained tech ni cians and the proper tools to service or repair this unit.
Please read and retain this manual. The instructions will enable you to assemble and maintain your snow thrower prop er ly.

Always observe the “SAFETY RULES”.

Safe Operation Practices for Walk-Behind Snow Throwers

IMPORTANT: This snow thrower is capable of amputating hands and feet and throwing objects. Failure to observe the

following safety instructions could result in serious injury.

Look for this symbol to point out im por tant

safety precautions. It means CAUTION!!! BE­ COME ALERT!!! YOUR SAFE TY IS IN VOLVED.

WARNING: Always disconnect spark plug wire

and place it where it can not con tact plug in or­der to pre vent ac ci den tal start ing when setting
up, trans port ing, ad just ing or making re pairs.

WARNING: This snow thrower is for use on

sidewalks, driveways and other ground level
surfaces. Caution should be exercised while
using on sloping surfaces. Do not use snow
thrower on surfaces above ground level such
as roofs of residences, garages, porch es or
other such structures or buildings.

Training

1. Read, understand and follow all instructions on the
machine and in the manual(s) before operating this
unit. Be thoroughly familiar with the controls and the
proper use of the equipment. Know how to stop the
unit and disengage the controls quickly.

2. Never allow children to operate the equipment. Never
allow adults to operate the equipment without proper
instruction.

3. Keep the area of operation clear of all persons, par­ticularly small children.

4. Exercise caution to avoid slipping or falling, especially
when operating the snow thrower in reverse.

Preparation

1. Thoroughly inspect the area where the equipment is
to be used and remove all doormats, sleds, boards,
wires, and other foreign objects.

2. Disengage all clutches and shift into neutral before
starting the engine (motor) if equipped.

3. Do not operate the equipment without wearing adequate
winter garments. Avoid loose fitting clothing that can
get caught in moving parts. Wear footwear that will
improve footing on slippery surfaces.

4. Handle fuel with care; it is highly flammable
(a) Use an approved fuel container.
(b) Never add fuel to a running engine or hot engine.
(c) Fill fuel tank outdoors with extreme care. Never fill

fuel tank indoors.

WARNING: Snow throwers have ex posed

rotating parts, which can cause severe injury
from contact, or from material thrown from the
discharge chute. Keep the area of operation
clear of all persons, small children and pets at
all times including startup.

CAUTION: Muffler and other engine parts be-

come extremely hot during operation and remain
hot after engine has stopped. To avoid severe
burns on contact, stay away from these areas.

WARNING: Engine exhaust, some of its con-

stit u ents, and certain vehicle com po nents
contain or emit chem i cals known to the State
of Cal i for nia to cause can cer and birth defects
or oth er re pro duc tive harm.

(d) Never fill containers inside a vehicle or on a truck or

trailer bed with a plastic liner. Always place containers
on the ground, away from your vehicle, before filling.

(e) When practical, remove gas-powered equipment

from the truck or trailer and refuel it on the ground.
If this is not possible, then refuel such equipment
on a trailer with a portable container, rather than
from a gasoline dispenser nozzle.

(f) Keep the nozzle in contact with the rim of the fuel

tank or container opening at all times, until refueling
is complete. Do not use a nozzle lock-open device.

(g) Replace gasoline cap securely and wipe up spilled

fuel.

(h) If fuel is spilled on clothing, change clothing im-

mediately.

5. Use extension cords and receptacles as specified by
the manufacturer for all units with electric drive motors
or electric starting motors.

6. Never attempt to make any adjustments while the
engine (motor) is running (except when specifically
recommended by manufacturer).

7. Always wear safety glasses or eye shields during op­eration or while performing an adjustment or repair to
protect eyes from foreign objects that may be thrown
from the machine.

Operation

1. Do not put hands or feet near or under rotating parts.
Keep clear of the discharge opening at all times.

2

2. Exercise extreme caution when operating on or cross­ing gravel drives, walks, or roads. Stay alert for hidden
hazards or traffic.

3. After striking a foreign object, stop the engine (motor),
disconnect the cord on electric motors, thoroughly
inspect the snow thrower for any damage, and repair
the damage before restarting and operating the snow
thrower. Remove key.

4. If the unit should start to vibrate abnormally, stop the
engine (motor) and check immediately for the cause.
Vibration is generally a warning of trouble.

5. Stop the engine (motor) whenever you leave the op­erating position, before unclogging the auger housing
or discharge chute, and when making any repairs,
adjustments or inspections.

6. When cleaning, repairing or inspecting the snow thrower,
stop the engine and make certain the auger blades and
all moving parts have stopped. Remove key.

7. Do not run the engine indoors, except when starting
the engine and for transporting the snow thrower in or
out of the building. Open the outside doors; exhaust
fumes are dangerous.

8. Exercise extreme caution when operating on slopes.

9. Never operate the snow thrower without proper guards,
and other safety protective devices in place and working.

10. Never direct the discharge toward people or areas
where property damage can occur. Keep children and
others away.

11. Do not overload the machine capacity by attempting
to clear snow at too fast a rate.

12. Never operate the machine at high transport speeds
on slippery surfaces. Look behind and use care when
operating in reverse.

13. Disengage power to the auger blades when snow
thrower is transported or not in use.

14. Use only attachments and accessories approved by
the manufacturer of the snow thrower.

15. Never operate the snow thrower without good visibility
or light. Always be sure of your footing, and keep a firm
hold on the handles. Walk; never run.

16. Never touch a hot engine or muffler.

Clearing a Clogged Discharge Chute

Maintenance and Storage

1. Check shear bolts and other bolts at frequent intervals
for proper tightness to be sure the equipment is in safe
working condition.

2. Never store the machine with fuel in the fuel tank inside
a building where ignition sources are present such as
hot water heaters, space heaters, or clothes dryers.
Allow the engine to cool before storing in any enclosure.

3. Always refer to operator’s manual for important details
if the snow thrower is to be stored for an extended
period.

4. Maintain or replace safety and instruction labels, as
necessary.

5. Run the machine a few minutes after throwing snow
to prevent freeze-up of the collector/impeller.

SERIAL NUMBER: ___________________________
DATE OF PURCHASE: _______________________
THE MODEL AND SERIAL NUMBERS WILL BE FOUND

ON A DECAL ATTACHED TO THE REAR OF THE SNOW
THROWER HOUSING (Figure 1).

YOU SHOULD RECORD BOTH SERIAL NUMBER AND
DATE OF PURCHASE AND KEEP IN A SAFE PLACE
FOR FUTURE REFERENCE.

PRODUCT MAINTENANCE LEVEL

MODEL

CATALOG

FOR SERVICE CALL 1-800-849-1297

ASSEMBLED IN U.S.A.
Orangeburg, SC 29118

CONFORMS TO ANSI B71.3-2005 SAFETY STANDARDS

SERIAL

407435

Figure 1

CUSTOMER RESPONSIBILITIES

• Read and observe the safety rules.

• Follow a regular schedule in maintaining, caring for
and using your snow thrower.

• Follow the instructions under “Maintenance” and “Stor­ age” sec tions of this manual.

Hand contact with the rotating auger blades

inside the discharge chute is the most common
cause of injury associated with snow throwers.
Never use your hand to clean out the discharge
chute.

To clear the chute:

1. SHUT THE ENGINE OFF!

2. Wait 10 seconds to be sure the auger blades have
stopped rotating.

3. Always use a clearing tool at least 15 inches long.

PRODUCT SPECIFICATIONS

Gasoline Capacity 1.6 Quarts (1,5 Liters)
and Type: Unleaded Regular only

Oil Type SAE 30 (above 50°F)
(API SG–SL): SAE 5W-30 or 10W-30

(32° to 50°F)
SAE 5W-30 (below 32°F)

Oil Capacity: 16 Ounces (0,47 Liters)

Spark Plug: F6RTC
Gap: 0.030" (0,762 mm)

3

TABLE OF CONTENTS

SAFETY RULES ........................................................ 2-3

PRODUCT SPECIFICATIONS ...................................... 3

CUSTOMER RESPONSIBILITIES ................................ 3

SAFETY AND INSTRUCTIONAL DECALS ................. 4

SETUP........................................................................ 5-6

OPERATION ............................................................7-11

MAINTENANCE ..................................................... 11-15

STORAGE ................................................................... 16

TROUBLESHOOTING ................................................ 17

REPAIR PARTS ..................................................... 18-26

WARRANTY ................................................................ 28

KNOW YOUR SNOW THROWER

READ THIS OWNER'S MANUAL AND ALL SAFETY RULES BEFORE OPERATING YOUR SNOW THROWER. Com-

pare the illustrations with your snow thrower to familiarize yourself with the location of various controls and adjustments.
Save this manual for future reference.

These symbols may appear on your snow thrower or in literature supplied with the product. Learn and under­stand their meaning.

IMPORTANT: Safety and instruction decals are located near areas of potential danger. Replace damaged decals.

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4

Setup

Loose Parts

Use the chart below to verify that all parts have been shipped.

Procedure Description Qty. Use

1.

2.

No parts required – Unfold the handle.

Carriage bolts
Flange nuts
Washers
Knob
Chute
Deflector

5
4
2
1
1
1

Install the discharge chute.
Install the discharge chute.
Install the discharge chute.
Install the discharge chute.

1. Unfolding the Handle

Procedure

1. Loosen the two handle knobs and pull out the two
handle bolts until you can move the handle freely and
rotate the handle to the operating position (Figure 2).

1

2

Figure 2

1. Handle knobs 2. Handle bolt

2. Tighten the handle knobs until they are snug (Figure 3).

2. Installing the Discharge
Chute

5 Carriage bolts
4 Flange nuts
2 Washers
1 Knob
1 Chute
1 Deflector

Procedure

Install the discharge chute as shown (Figure 4).

1

4

3

2

3

5

4

6

Figure 3

Figure 4

1. Deflector

2. Carriage bolts

3. Flange nuts

IMPORTANT: Do not overtighten the flange nuts;
otherwise you may damage the discharge chute.

5

4. Washer

5. Knob

6. Discharge chute

3. Filling the Engine with Oil

ENGINE

See engine manual.

LUBRICATION

Use only high quality detergent oil rated with API service
classification SG–SL. Select the oil's SAE viscosity grade
according to your expected operating temperature.

NOTE: Although multi-viscosity oils (5W30, 10W30 etc.)
improve starting in cold weather, these multi-viscosity oils
will result in increased oil consumption when used above
32°F. Check your engine oil level more frequently to avoid
possible engine damage from running low on oil.

Change the oil after every 25 hours of operation or at least
once a year if the snow thrower is not used for 25 hours
in one year.

Check the crankcase oil level before starting the engine
and after each five (5) hours of continuous use. Tighten oil
fill cap / dipstick securely each time you check the oil level.

Product Overview

13

12

*11

1

2

4

3

5

6

7

8

Figure 5

NOTE: 10W30 synthetic oil is acceptable for use in cold
temperatures.

1. Move the snowthrower to a level surface.

2. Clean around the dipstick (Figure 6).
NOTE: Dipstick location may vary depending on engine

type.

3. Remove either side mounted filler cap dipstick or high
oil fill dipstick and wipe it clean.

1

Fill if oil
is below
“Add”
on the
dipstick

10

9

*11

Figure 7

1. Discharge chute

2. Chute deflector handle

3. Fuel tank cap

4. Control bar

5. Recoil start handle

6. Primer

8. Electric-start button

9. Oil drain plug

10. Drive belt cover
*11. Oil fill cap/dipstick

12. Ignition key

13. Chute deflector

7. Choke lever

* Dipstick location may vary depending on engine type.

Fill if oil is
below letter
“L” on the
ller cap

Figure 6

1. Oil filler cap/dipstick

4. Insert the dipstick into the filler neck and turn clockwise
until fully seated. Then remove the dipstick by turning
it counter-clockwise.

5. Fill oil to "FULL" on dipstick with the recommended oil.

6. Securely screw in the oil filler cap/dipstick.

6

Operation

NOTE: Determine the left and right sides of the machine

from the normal operating position.

• Gasoline is extremely flammable and explosive.
A fire or explosion from gasoline can burn you
and others.

• To prevent a static charge from igniting the gaso­line, place the container and/or snowthrower on
the ground before filling, not in a vehicle or on
an object.

• Fill the tank outdoors when the engine is cold.
Wipe up spills.

• Do not handle gasoline when smoking or around
an open flame or sparks.

• Store gasoline in an approved fuel container, out
of the reach of children.

• Do not tip the snowthrower with fuel in the fuel
tank.

The operation of any snow thrower can result
in foreign objects thrown into the eyes, which
can result in severe eye damage. Always wear
safety glasses or eye shields while operating
your snow thrower or performing any ad just-

ments or repairs. We recommend standard safe ty glasses
or a wide vision safety mask worn over spectacles.

IMPORTANT: Know how to operate all controls before
adding fuel or attempting to start the engine.

NOTE: For best results, purchase only the quantity of
gasoline that you expect to use in 30 days. Otherwise,
you may add fuel stabilizer to newly purchased gasoline
to keep it fresh for up to 6 months.

Checking the Engine Oil
Level

NOTE: 10W30 synthetic oil is acceptable for use in cold

temperatures.

1. Move the snowthrower to a level surface.

2. Clean around the dipstick (Figure 9).
NOTE: Dipstick location may vary depending on engine

type.

3. Remove either side mounted filler cap dipstick or high
oil fill dipstick and wipe it clean.

1

Fill if oil
is below
“Add”
on the
dipstick

Fill if oil is
below letter
“L” on the
ller cap

Filling the Fuel Tank

Fill the fuel tank with fresh unleaded gasoline, do not
exceed 87 octane rating (Figure 8).

Figure 8

IMPORTANT: Do not add oil to the gasoline.
IMPORTANT: Do not use E85 blended fuels. This engine

is not E20/E30/E85 compatible. Alternative fuels with
high alcohol content can cause hard starting, poor engine
performance, and may cause internal engine damage.

Figure 9

1. Oil filler cap/dipstick

4. Insert the dipstick into the filler neck and turn clockwise
until fully seated. Then remove the dipstick by turning
it counter-clockwise.

5. Fill oil to "FULL" on dipstick with the recommended oil.

6. Securely screw in the oil filler cap/dipstick.

NOTE: Running the engine with a low oil level can cause
engine damage. Always check the engine oil before start up.

NOTE: Running the engine with too much oil may cause
engine damage and excess smoke in the exhaust. Always
check the engine oil level before start up.

7

Starting the Engine

1. Push key in (Figure 10).

1

Figure 10

1. Key

2. Move choke lever to left position (Figure 11).

3. Firmly push in the primer 3 times with your thumb,
holding the primer in a for a second before releasing
it each time (Figure 12).

1

Figure 12

1. Primer

NOTE: Remove your glove when you push in the primer
so that air cannot escape from the primer hole.

IMPORTANT: Do not use the primer or the choke if the
engine has been running and is hot. Excessive priming
may flood the engine and prevent it from starting.

4. Connect an extension cord to the snowthrower and
plug the other end into a three-hole grounded 120
volt A.C. receptacle and push the electric-start button
(Figure 13), or pull the recoil start handle (Figure 14).

1. Choke lever

1

1

Figure 11

Figure 13

1. Electric start button

NOTE: Use only a UL-listed, 16-gauge extension cord
recommended for outdoor use that is not longer than 50
feet (15 m).

8

Engaging the Auger Blades

The electrical cord can become damaged, causing

a shock or fire.

Thoroughly inspect the electrical cord before plug-

ging it into a power source. If the cord is damaged,
do not use it to start the snowthrower. Replace or
repair the damaged cord immediately. Contact an
Authorized Service Dealer for assistance.

1

To engage the auger blades, hold the control bar against
the handle (Figure 15).

1

Figure 15

Figure 14

1. Recoil start handle

IMPORTANT: Run the electric starter no more than 10
times at intervals of 5 seconds on, then 5 seconds off.
Running the electric starter extensively can overheat and
damage it. If the engine does not start after this series
of attempts, wait at least 40 minutes to allow the starter
to cool before attempting to start it again. If the engine
does not start after the second series of attempts, take
the snowthrower to an Authorized Service Dealer for
service.

NOTE: If you pull the recoil handle and feel no resistance,
the starter may be frozen. Thaw out the starter before
attempting to start the snowthrower.

5. While the engine is running, move the choke lever
slowly to the right position.

6. Unplug the extension cord from the power source and
the snowthrower (Figure 13).

1. Control bar

Disengaging the Auger
Blades

To disengage the auger blades, release the control bar
(Figure 16).

1

Unplug the power cord whenever you are not start-

ing the snowthrower.

Figure 16

1. Control bar

9