MTD TMO-33849A User Manual
.50
ASSEMBLY
OPERATION
MAINTENANCE
PARTS LIST
IMPORTANT;
Read Safety Rules
and Instructions
PRINTED IN U.S.A.
MODEL NUMBERS
190-469A
TMO-33849A
36”
SNOW THROWER
ATTACHMENT
FORM No. 770-0106
(Rev. 8/79)
LIMITED WARRANTY
For one year from the date of original retail purchase, MTD PRODUCTS INC will either
repair or replace, at its option, free of charge, F.O.B. factory or authorized service firm,
any part or parts found to be defective in material or workmanship. Transportation charges
under this warranty must be paid by the purchaser unless return is requested by
MTD PRODUCTS INC.
This warranty will not apply to any part which has become inoperative due to misuse,
excessive use, accident, neglect, improper maintenance, alterations, or unless the unit
has been operated and maintained in accordance with the instructions furnished. This
warranty does not apply to the engine, motor, battery, battery charger or component parts
thereof. Please refer to the applicable manufacturer’s warranty on these items.
This warranty will not apply where the unit has been used commercially.
Warranty service is available through your local authorized service dealer or distributor. If
you do not know the dealer or distributor in your area, please write to the Customer Service
Department of MTD.
The return of a complete unit will not be accepted by the factory unless prior written
permission has been extended by MTD.
This warranty gives you specific legal rights. You may also have other rights which vary
from state to state.
IMPORTANT
Safe Operation Practices for Snow Throwers
TRAINING
1. Read the owner's guide instruction manual careful
ly. Be thoroughly familiar with the controls and
proper use of the equipment. Know how to stop the
unit and disengage the controls quickly.
2. Never allow children to operate equipment. Never
allow adults to operate equipment without proper
instruction.
3. Keep the area of operation clear of all persons, es
pecially small children and pets.
4. Exercise caution to avoid slipping or falling, es
pecially when operating in reverse.
PREPARATION
1. Thoroughly inspect the area where the equipment
is to be used and remove all door mats, sleds,
boards, wires and other foreign objects.
2. Disengage all clutches and shift into neutral before
starting engine or motor.
3. Do not operate equipment without wearing ade
quate winter outer garments. Wear footwear which
will improve footing on slippery surfaces.
4. Handle fuel with care, it is highly flamamble.
(A) Use approved fuel container.
(B) Never add fuel to a running engine or hot en
gine.
(C) Fill fuel tank outdoors with extreme care. Never
fill fuel tank indoors.
(D) Replace gasoline cap securely and wipe up
spilled fuel.
(E) Open doors if engine is run in the garage—ex
haust fumes are dangerous.
5. Adjust coilector housing height to clear gravel or
crushed rock surface.
6. Never attempt to make any adjustments while en
gine or motor is running (except where specifically
recommended by manufacturer).
7. Never operate the snow thrower without good vis
ibility or light.
8. Let engine and machine adjust to outdoor tempera
tures before starting to clear snow.
OPERATION
1. Do not put hands or feet near rotating parts. Keep
clear of discharge opening at all times.
2. Exercise extreme caution when operating on or
crossing a gravel drive, walks, or roads. Stay alert
for hidden hazards and traffic. Do not carry pas
sengers.
3. After striking a foreign object, stop the engine
(motor), remove wire from spark plug, thorough
ly inspect the snow thrower for any damage, and
repair the damage before restarting and operat
ing the snow thrower.
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 engine (motor) whenever you leave the oper
ating position, before unclogging the collector/
impeller housing or discharge guide, and making
any repairs, adjustments, or inspections.
6. Take ail possible precaution when leaving the ve
hicle unattended, disengage the power take-off,
lower the attachment, shift into neutral, set the
parking brake, stop the engine, remove the key.
/. When cleaning, repairing, or inspecting make cer
tain collector/impeller, and all moving parts have
stopped. Disconnect spark plug wire and keep
wire away from plug to prevent accidental start
ing. Disconnect cord on electric motors.
8. Do not run engine indoors, exhaust fumes are
dangerous.
9. Do not clear snow across the face of slopes. Ex
ercise extreme caution when changing direction
on slopes. Do not attempt to clear steep slopes.
10. Never operate snow thrower without guards,
plates, or other safety protective devices in place.
n. Never operate snow thrower near glass enclosure,
automobiles, window wells, drop-offs, etc., with
out proper adjustment of snow discharge angle.
Keep children and pets away.
12. Do not overload machine capacity by attempting
to clear snow at too fast a rate.
13. Never operate machine at high transport speeds
on slippery surfaces. Use care when backing.
14. Never direct discharge at bystanders or allow any
one in front of unit.
15. Disengage power to collector/impeller when
transporting or not in use.
16. Only use attachments and accessories approved by
manufacturer of snow thrower (such as wheel
weights, counter weights, cabs, etc.).
MAINTENANCE AND STORAGE
1. Check shear bolts, engine mounting bolts, etc. at
frequent intervals for proper tightness to be sure
equipment is in safe working condition.
2. Never store machine with fuel in the fuel tank in
side a building where open flame or spark are pres
ent. Allow engine to cool before storing in any
enclosure.
3. Always refer to owner's guide instructions for im
portant details if snow thrower is to be stored for
an extended period.
4. Ron machine a few minutes after throwing snow
to prevent freeze up of collector/impeller.
LIST OF CONTENTS IN HARDWARE PACK
SEE FIGURE 1
+
G
FIGURE 1
A (1)
B (2)
C (2)
D (2)
E
— F
0
1
J
\
/
N
I
/
R*"
t
p
wm
S—
T
Q-'
G
H (4)
I
J
K (2)
L (2)
M (2)
N (2)
0 (2)
P (2)
Q (8)
R-(2)
S (4)
T (4)
U (4)
V (2)
W (2)
X (6)
Y (3)
Z (2)
AA (1)
"V"-Belt 1/2" X 85" long
Clevis Pins
Flat Washers
Hair Pin Cotters
Hair Pin Cotters
(7)
Hex Top Lock Nut 5/16-18 Thread
(2)
Flat Washers
(2)
Carriage Bolts 5/16-18 x 5/8" long
Lock Washers 5/16" I.D.
(8)
Hex Nuts 5/16-18 Thread
(4)
Flat Washers
Hex Bolts 5/16-18 x 1.00" long
Hex Bolts 5/16-18 x .75" long
Hex Bolts 5/16-18 x 1.25" long
Hex Bolts 3/8-16 X 1.00" long
Lock Washers 3/8" I.D.
Hex Nuts 5/16-18 Thread
External Lock Washers 5/16" I.D.
Lock Washers 1/2" I.D.
Hex Nuts 1/2-13 Thread
Hex Bolts 1/2-13 X 1.25" long
Hex Bolts 5/16-18 x 2.00" long
Flat Washers
Hex Center Lock Nuts 1/4-20 Thread
Chute Flange Keeper Ass'yHelper Springs
Lift Handle Shaft
FIGURE 2
FIGURE 3
LIST OF LOOSE PARTS IN CARTON
SEE FIGURES 2 and 3.
AB (1)
AC (1)
AD (1)
AE
AF
AG (2)
AH (2)
Preassembled Chute Crank & Support
Channel Supporting Bracket - L.H.
Channel Supporting Bracket - R.H.
Linkage Arm Assembly - L.H.
(1)
Linkage Arm Assembly - R.H.
(1)
Linkage Brackets
Drift Cutters
_AI (1} Preassembled Chute Assembly
AJ (1) Preassembled Idler Assembly
TOOLS REQUIRED
1. Adjustable Wrench
2. A strong piece of wire
3. A screwdriver
4. A pair of pliers
5. A 7/16" Open End Wrench
6. A 1/2" Open End Wrench
7. A 9/16" Open End Wrench
8. A 3/4" Open End Wrench
FIGURE 4
HEX BOLT (U)
LOCKWASHER (S)
ASSEMBLY INSTRUCTIONS
1. Remove the snow thrower, all loose parts and
hardware package from the carton.
2. Tip the snow thrower forward, so that the augers
are face down.
■ 3. Assemble the linkage arms (Ref. AE & AF) to the
housing assembly as shown in figure 4. Be sure
the linkage arms have the large notch up. Secure
with four hex bolts (U) 1/2-13 x 1.25" Lg., four
hex nuts (T) and lockwashers (S) provided.
HELPER bPRING (Z)
FIGURES
4. Place helper spring (Z) in position on linkage arm
assemblies. Secure with flat washers (W) and hex
bolts (V) provided in hardware pack. See figure
5. Thread bolt approximately one inch into the
spring insert. Adjustment is made in step number
26.
Tip the snow thrower back in normal position so
that is rests on linkage arms.
Assemble the drift cutters (AH) to the snow
thrower housing with four carriage bolts (H),
lockwashers (I) and hex nuts (J). See figure 6.
Heads of carriage bolts assemble from the inside
of housing.
DRIFT
CUTTER
CARRIAGE BOLT
(H)
LOCK WASHER (I)
HEX NUT (J)
FIGURES
FIGURE 7
CHUTE ASSEMBLY (Al)
NOTE
Before setting the chute assembly on
the spiral housing assembly, grease the
housing for ease of operation. See
figure 7.
7. Assemble the chute assembly (Al) to the housing
using three chute flange keepers (Y) and six hex
lock nuts (X). See figure 7.
■8. Place the 85" belt (A) in position on the idler of
the snow thrower as shown in figure 8.
NOTE
FIGURES
IDLER PULLEY
The idler bracket has three holes for
belt tension adjustment. Normally, the
idler pulley is assembled in the center
hole. If the belt is too tight to
assemble, the idler pulley may be
moved to the top hole.
PREPARING THE LAWN
TRACTOR FOR ASSEMBLY
OF SNOW THROWER
1. Remove the gas cap and place a piece of plastic
film on the gas cap to prevent gas from leaking out
of the tank.
NOTE
If unit is electric start remove the
battery.
2. Remove the spark plug wire from spark plug and
grounrd.
3. Remove the mowing deck.
4. With a piece of wire hold the front left hand deck
hanger out of the way. See figure 9.
FIGURE 9
NOTE
This hanger bracket is straight.
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