MTD 246-680A User Manual

Owner's Operating

Service Instruction

10*

Manual

• ASSEMBLY

• OPERATION

• REPAIR PARTS

Model Nos.

246-670A
246-680A

MTD PRODUCTS INC

PRINTED IN U.S.A.

• 5389 WEST 130t)i STREET •

P. 0. BOX 2741 CLEVELAND OHIO 44111

FORM NO. 770-6144.

I M P O R T A N T

It is suggested that this manual be read in its entirety before attempting to assemble or operate. Keep this
manual in a safe place for future reference and for ordering replacement parts.

This unit is shipped WITHOUT GASOLINE or OIL. After assembly, see operating section of this manual for
proper fuel and amount.

SAFE OPERATION PRACTICES FOR POWER VACUUMS

1. Read the operating and service instructing manua,!
carefully. Be thoroughly familiar with the controls

and proper use of the power vacuum.

2. Never allow children to operate this power vac

uum.

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

4. Check fuel before starting engine. Do not fill fuel
tank indoors, when engine is running, or while

engine is hot. Wipe off any spilled fuel before

starting engine.

5. Do not change engine governor settings.

6. Do not put hands near rotating parts for any rea
son.

7. If the power vacuum should start io vibrate ab
normally, stop the engine and check immediately

for the cause. Vibration is generally a warning of
trouble.

8. Before cleaning, repairing or inspecting make cer
tain all moving parts have come to a complete
stop. Disconnect spark plug wire and keep wire
away from plug to prevent accidental starting.
Also keep throttle control lever in the stop posi
tion.

9. If the power vacuum should become blocked with
debris at any point shut engine off and wait until
the impeller comes to a complete stop before at
tempting to remove the obstruction. Disconnect
spark plug wire to prevent accidental starting.

10. Check all bolts for tightness at frequent periods.

11. Never store this power vacuum with fuel in the
tank. Allow engine to cool before starting in any
enclosure.

12. Keep bag and equipment free of debris when not
in use.

13. Never operate this power vacuum unless air duct
and vacuum bag are properly affixed in tfieir
place. Large zippered end of bag must be closed

when operating to prevent objects from being
blown out.

14. Never empty vacuum bag when engine is running.

15. Never change inlet nozzle or auxiliary hose attach
ment when engine is running.

16. The manufacturer recommends that the operator
wear safety glasses or some other suitable eye

protection when operating this machine.

17. Check the vacuum bag frequently for wear and
replace when necessary.

ASSEMBLY INSTRUCTIONS

(Refer to figures 1, 2 and 3)

1. Place the upper handle in position and fasten with
four (4) hex screws and hex centerlock nuts pro
vided.

16. Engage and disengage control lever, check for
free pivoting action. It may be necessary to read
just the control rod.

OPERATION

2. Place the air duct liner in the elbow of the air
duct and fasten in position as you assemble the
air duct in step 3. (See figure 1.)

3. Place the air duct in position on the blower hous

ing and fasten with four (4) flat washers and hex
nuts provided.

4. Slide the vacuum bag over the back of the upper
handle and snap the four flaps to hold the bag.

5. Fasten the deflector on the top of the air duct with

three hex screws, flat washers and hex nuts. (See
figure 1.)

6. Slide the bag over the air duct.

7. Fasten the nozzle to the front of the vacuum with
four flat washers and thumb nuts provided.

8. Use the following steps on the self propelled unit

only.

9. Fasten the throttle control to the right hand side

of the upper handle with one hex screw and hex
center locknut provided.

10. Secure throttle control cable to the lower handle
with the cable clip provided.

NOTE

Cable clip must be assembled to lower
handle with the open end towards the
engine. This will prevent wear to the

bag.

1. Service engine with gas and oil. See engine man
ual packed with lawn mowet for complete instruc
tions for care and maintenance of engine. READ
DIRECTIONS CAREFULLY.

START ENGINE

After the engine has been properly fueled and oiled
(refer to engine operating and maintenance instruc
tions), start engine in the following manner.

PUSH MODEL

1. Move throttle control lever on engine to START po
sition.

2. Crank engine. Pull recoil with a quick firm pull.

Do not pull out so far that rope stops with a jerk as
this will cause rope failure. Do not allow rope and
handle to snap back into place.

3. After two or three full firm pulls on recoil (or as
soon as engine fires), move speed control to run

position.

4. Operate a new engine at intermediate speeds and
light load for the first few hours as you would a
new automotive engine.

5. To stop engine, move speed control lever on en

gine to STOP position.

6. If carburetor needs adjustment to start or for oper

ation, see "Carburetor Readjustment" section.

11. Place ferrule through control lever.

12. Place flat washer over ferrule and thread control
rod into ferrule about eight or nine turns.

13. Hook formed end of control rod in the shifting
finger.

14. Place curved face of spacer towards the outside
of upper handle left hand side.

15. Fasten control lever in position with hex screw and

two hex nuts provided.

SELF PROPELLED MODEL

1. Place drive engagement lever in the neutral posi
tion (towards the operator).

2. Move throttle control lever on handle to START
position.

3. Crank engine. Pull recoil with a quick firm pull.
Do not pull out so far that rope stops with a Jerk
as this will cause rope failure. Do not allow rope
and handle to snap back into place.

246-670A
246-680A

IF YOU WRITE TO US ABOUT THIS AliTICLE

OR IF YOU ORDER REPLACEMENT PARTS AL

WAYS MENTION THIS MODEL & SERIAL NO

MODEL

cape located on the uppe/ right

hand side. This should be open
when the bag becomes half full.

FIGURE 1. EXPLODED VIEW OF UPPER HANDLE