Page 1
OWNER'S GUIDE
ASSEMBLY • OPERATION • MAINTENANCE • PARTS
$1.00
Model Numbers
249-675-000
POWER
249-685-000
VACUUMS
249-689-000
24677-9
24687-9
Important: Read Safety Rules and Instructions Carefully
PRINTED IN U.S.A.
FORM NO. 770-5208D
Page 2
NDEX
Safe Operation Practices.............................................. 3
Assembly instructions
Operation ..................................................................... 9
Adjustments
Lubrication ................................................................. 10
.................................................................
..................................................
Instri étions given with this symbol are
A
for personal safety. Be sure to follow
them.
4
9
Maintenance
Off-Season Storage
Illustrated Parts
Replacement Parts List
.............................................................
..................................................
....................................................
........................................
10
V
12,14
13, 15
WARNING
A(
This unit is equipped with an internal combustion engine and should not be used on or near any unimproved
forest-covered, bursh-covered or grass-covered lar d unless the engine's exhaust system is equipped with a sparkarrester meeting applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effecti^
working order by the operator.
In the State of California the above is required by law (Section 4442 of the California Public Resources Code).
Other states may have similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available
through your nearest engine authorized service center.
Page 3
A
IMPORTANT
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 separate engine manual for proper
fuel and engine oil recommendations.
SAFE OPERATION PRACTICES FOR POWER VACUUMS
1. Read this operating and service instructing manual
carefuHy. Be thoroughly familiar with the controls
and proper use of the power vacuum.
2. Never allow children to operate this power
vaccum.
3. Keep the area of operation clear of 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.
Do not change engine governor settings.
o. Do not put hands near rotating parts for any
reason.
7. If the power vacuum should start to vibrate
abnormally, stop the engine and check immedi
ately for the cause. Vibration is generally a
warning of trouble.
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 storing 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 their
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.
8. Before cleaning, repairing or inspecting, make
certain 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
position.
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 attempting to remove the obstruction.
Disconnect spark plug wire to prevent accidental
starting.
17. Check the vacuum bag frequently for wear and
replace when necessary.
18. Never operate as a leaf blower unless impeller
guard and guard assembly are properly affixed in
their place.
19. Exercise caution whenever operating as a leaf
blower. Do Not allow discharge to be pointed in
the direction of persons.
20. No one should operate this unit while intoxicated
or while taking medication that impairs the senses
reactions.
Page 4
FIGURE 1
® \
VVT
T 8 I ®@®@
® ® ® /,
M
ASSEMBLY
INSTRUCTIONS
CONTENTS OF HARDWARE PACK
(See figure 1)
A (1) Clutch Grip Assembly*
B (1) Hair Pin Cotter*
C (1) Clevis Pin*
D (1) Extension Spring*
E (1) Lock Nut 1/4-20 Thread*
F (3) Hand Knobs
G (3) Belleville Washers
H (1) Heavy Flat Washer
I (4) Hex Bolts 1/4-20 x 1.75" Long
J (4) Hex Lock Nuts 1/4-20 Thread
K (2) Stud Pins
L (2) Push-on Speed Nuts
M (1) Hex Jam Nut 1/4-20 Thread*
LOOSE PARTS IN CARTON
(See figure 2)
W
X-
Y-
Z-
AB
N (1) Nozzle
0 (1) Upper Handle
P (1) Air Duct Assembly
Q (1) Clutch Rod*
R (1) Directional Discharge Assembly
S (1) Impeller Guard
T (1) Bag
*Self-Propelled Models Only.
TOW BAR KIT- Standard with push models.
(See figure 3) Optional with self-propelled models.
U (2) Hex Bolts 5/16-18 X 1.00" Long
V (4) Shoulder Spacers
W (2) Hex Nut 5/16-18 Thread
X (1) Truss Machine Screw 1/4-20 X .75" Long
Y (1) Lock Washer 1/4" I.D.
Z (1) Hex Nut 1/4-20 Thread
AA (1) Shoulder Bolt
AB (2) Belleville Washers 3/8" I.D.
AC (1) Hex Jam Lock Nut 3/8-16 Thread
(2) Tow Bar Halves (Not Shown)
FIGURE 3
Page 5
NOZZLE (N)
FIGURE 4
UPPER
HANDLE (O)
1. Place nozzle (N) in position on front of housing
so that it rests in flanges. Secure with one hand
knob (F) and belleville washer (G). See figure 4.
2. Place the upper handle (0) in position over lower
handle. Fasten with four hex bolts (I) and lock
nuts (J) provided. See figure 5. Two 7/16"
wrenches are required.
FIGURE 5
3. Place the stud pins (K) in holes in upper handle
(head of pins go to the inside of handle). Secure
pins with push-on speed nuts (L) by holding
speed nut with box wrench and tapping pin with
hammer. See figure 6.
Page 6
HAND
KNOB (F)
FIGURE 7
A'
STUD PIN
ON H\NDLE
Place air duct assembly (P) over opening on top
of housing. Secure with two hand knobs (F) and
belleville washer (G). See figure 7.
Assemble the bag by slipping the top straps on
5.
bag (T) over upper handle. Hook two small straps
over stud pins on handle. Slip elastic opening of
bag over air duct assembly. See figure 8.
FIGURE 8
NOTE
Be certain elastic on bag is placed over
the flanges on air duct assembly.
NOTE
Steps 6, 7, 8 and 9 are for self-propelled
units only.
Assemble the clutch grip (A) to the left hand
6.
side of upper handle. Secure in place with clevis
pin (C) and hair pin cotter (B). See figure 9. Headof clevis pin should be to the outside of handle.
FIGURE 9
Page 7
LOCK
NUT (E)
FIGURE 10
CLUTCH
BRACKET
ASSEMBLY
\
CLUTCH
ROD (Q)
EXTENSION
SPRING (D)
7. Slide the extension spring (D) onto clutch rod (Q)
as shown in figure 10. Thread lock nut (E) onto
clutch rod approximately 2-1/2 inches.
Hook top (hooked end) of clutch rod into clutch
8.
grip. Hook spring into clutch bracket assembly.
See figure 11. Spring should not have any slack.
Adjust nut so that when the clutch grip is all the
way up, there is no slack in the spring.
FIGURE 11
9. Thread hex jam nut (M) onto clutch rod, and
lock it against the lock nut (E).
ASSEMBLY INSTRUCTIONS
To Convert from a Vacuum to a Leaf Blower.
Ac WARNING ^
Engine must be stopped (off) and
spark plug wire disconnected.
1. Remove the bag.
2. Remove the air duct assembly by removing two
hand knobs and belleville washers.
Remove the nozzle by removing one hand knob
3.
and belleville washer.
Remove‘the hand knob and belleville washer
-4.
holding the housing to engine brace. See figure 12.
Page 8
5. Lift up and out on the housing and rotate it 105°
clockwise. Chute opening should be to the right
hand side when viewed from the front of unit.
See figure 13.
6. Place the impeller guard (S) into flanges on front
of housing. Line up hole in guard with hole on
housing. Secure with one hand knob, belleville
washer and heavy flat washer (H). See figure 13.
FIGURE 14
SHOULDER
SPACERS(V)
HAND KNOB
HEX
NUT (W)
TRUSS
MACHINE
SCREW (X).
DIRECTION i\L
DISCHARGE
ASSEMBLY ;r)
BELLEVILLE
WASHER (AB)
HEX JAM
LOCK NUr
(AC)
HITCH
PLA E
7. Place the directional discharge assembly (R) over
chute opening. Secure with two hand knobs and
belleville washers. See figure 14.
ASSEMBLY INSTRUCTIONS for Tow Bar Kit (Optional)
1. Remove the self-tapping screws on each side of
frame. Refer to drawing on page 12, reference
number 42.
2. Place tow bar half in position on frame. Place
one shoulder spacer (V) between frame and
tow bar. Next, place shoulder spacer (V) and hex
bolt (U) through tow bar and frame. Secure with
hex nut (W). See figure 15. Repeat for other side.
3. Secure the two tow bar ends together with truss
machine screw (X), lock washer (Y) and hex nut
(Z). See figure 15.
FIGURE 15
SHOULDER''
BOLT (AA)
BELLEVILLE
WASHER (AB!
To attach the tow bar to a hitch, place the shoulder
bolt (AA) up through the tow bar. Place one belleville
washer (AB) on the shoulder bolt, then the hitch
place and the other belleville washer. Cupped side of
the washers must be against the hitch plate. Secure
with hex jam lock nut (AC). See figure 15.
Page 9
OPERATION
BEFORE STARTING ENGINE
vice engine with gas and oil. See engine manual
.ked with vacuum for complete instructions for
care and maintenance of engine. READ DIREC
TIONS CAREFULLY.
A
CAUTION
REVOLVING BLADES-KEEP
HANDS AWAY FROM ALL
OPENINGS
TO START ENGINE
After the engine has been properly fueled and oiled
(refer to engine operating and maintenance instruc
tions), start engine following the instructions below.
1. Move choke lever on engine to CHOKE position.
NOTE
A warm engine may not require
choking.
Move throttle control lever on engine to FAST
position.
S. Crank engine by pulling recoil starter with a
quick, firm stroke Do not pull out so far the rope
stops with a jerk. Do not allow rope and
handle to snap back into place.
4. After two or three full firm pulls on recoil (or as
soon as engine fires), move choke control to
RUN position.
5. Self Propelled Models Only - To engage the drive
mechanism, squeeze the clutch grip against the
upper handle. Release the clutch grip to stop the
forward motion.
TO STOP ENGINE
1. To stop engine, move throttle control lever to
OFF position.
2. Disconnect spark plug wire and ground to prevent
accidental starting while equipment is unattended.
ADJUSTMENTS
A
Do not at any time make any adjust-
mentto the unit without first stopping
engine and disconnecting spark plug
wire.
HEIGHT ADJUSTMENT
The height adjustment crank is located on the right
hand side of the vacuum. See figure 17. Turn the crank
clockwise to raise the nozzle. Turn the crank counter
clockwise to lower.
CAUTION
Operate a new engine at intermediate speeds and light
load for the first few hours as you would a new
automotive engine.
IMPORTANT
The vacuum bag may have an air escape
located on the upper right hand side.
See figure 16. The air escape can be
opened if the vacuum is operated in
wet, sandy or muddy conditions.
FIGURE 17
Page 10
CARBURETOR ADJUSTMENT
▲
If any adjustments are made to the
engine while the engine is running
(e.g. carburetor), disengage all clutches.
Keep clear of all moving parts. Be
careful of heated surfaces and muffler.
If carburetor needs adjustment to start or for oper
ation, see "Carburetor Adjustment" section of enjiine
manual.
CLUTCH ROD ADJUSTMENT (Self Propelled Models Only)
To adjust the clutch rod, refer to step numbers 8 and
9 under assembly instructions.
i WARNING t
LUBRICATION
Wheels - Rear wheels are provided with oil ite
bearings. Place a few drops of SAE 30 oil on each
bearing once a season.
Gear Box (Self Propelled Models Only) - The gear box
lubricated with 2 ounces of High Temp. (450" F.)
grease. Order part number 737-0133. Periodically
check lubricant level by removing the two self-tap ting
screws on the gear box cover and lifting off the
cover. Do not change grease; simply add if necesstry.
MAINTENANCE
A
Disconnect spark plug wire and ground
it against the engine before performing
any repairs or maintenance.
BELT REPLACEMENT (Self Propelled Models O ily)
1. Remove the nozzle or impeller guard from f ont
of blower housing.
2. Remove hex bolt and lock washer from centc r of
impeller. See figure 18. A 9/16" socket wrench
with extension is needed.
3. Remove hand knob and belleville washer from
top of housing.
4. Remove two self-tapping screws which hold the
belt guard. See figure 19. A 3/8" wrenci is
required. Lift off belt guard.
I WARNING }
FiGURE 19
5. Slide belt off the impeller pulley. Slide housing
and impeller off engine crankshaft. Be careful
to not lose square key. See figure 20.
ENGINE
CRANKSHAFT
P.T.O.
PULLEY
FIGURE
10
Page 11
6. Slide impeller and blower housing assemblies off
crankshaft.
OFF-SEASON STORAGE
7. Remove belt from P.T.O. pulley and install new
belt. See figure 20.
NOTE
When reassembling the new belt, the
aid of another person will be helpful.
8. Turn the crankshaft until the key way on shaft is
directly on top. While holding housing assembly
and impeller assembly, line up the key way on the
pulley with the key on the crankshaft, and slide
housing and impeller assemblies onto crankshaft.
9. Secure impeller to crankshaft with hex bolt and
lockwasher, removed in step 2. Tighten securely.
10. Slip belt over impeller pulley and reassemble the
belt guard.
11. Secure blower housing with hand knob and
washer.
12. Reassemble the nozzle or impeller guard.
The following steps should be taken to prepare the
unit for storage.
1. Clean the engine and the entire unit thoroughly.
2. Refer to engine manual for correct engine storage
instructions.
3. Store unit in a clean, dry area.
NOTE
When storing any type of power
equipment in an unventilated or metal
storage shed, care should be taken to
rustproof the equipment. Using a light
oil or silicone, coat the equipment,
especially springs and bearings.
PROBLEM CAUSE
1. Excessive
vibration.
2. Height adjust
ment slips out
of lockout
position.
3. Engine fails
to start.
4. Hard starting
or loss of power.
5. Engine over
heats.
A. Bent crankshaft.
B. Vane plate out of balance.
Handle bent.
A. Check fuel tank for gas.
B. Spark plug lead wire
disconnected.
C. Faulty spark plug.
A. Spark plug wire loose.
B. Dirty air cleaner.
A. Carburetor not adjusted
properly.
B. Air flow restricted.
C. Engine oil level low.
TROUBLE SHOOTING CHART
REMEDY
A. Replace crankshaft (should be done by an authorized service
dealer).
B. Replace vane plate.
Replace index handle and index plate.
A. Fill tank if empty.
B. Connect lead wire.
C. Clean, adjust gap or replace.
A. Connect and tighten spark plug wire.
B. Clean air cleaner as described in engine manual.
A. Adjust carburetor. See engine manual.
B. Remove blower housing on engine and clean as described in the
engine manual.
C. Fill crankcase with the proper oil.
NOTE: For repairs beyond the minor adjustments listed above, please contact your local service dealer.
11
Page 12
Models 675, 685 and 689
12
Page 13
Models 675,685 and 689
PARTS LIST FOR MODELS 675, 685, 689, 24677 and 24687 POWER VACUUMS
NO.
COLOR
CODE
DESCRIPTION
Clutch Grip Ass'y- + 41 715-0246
Clevis Pin .375" Dia. x 1.88"t
747-0154
749-0787
749-0482
Clutch Rod 32" Lg. t
Handle Brace (Painted) N
Handle Brace (Chrome)
Part of Engine
710-0892 Hex L-Wash. Hd. AB Tap Scr.
1/4" X .62" Lg. t X .56" Lg. t
714-0114
14536
Square Key 1/4" x2.0"Lg. 48
Air Vane Plate Ass'y- (675 and
677)
14557A
710-0442
754-0219
Air Vane Plate Ass'y. w/pulley t
Hex Bolt 5/16-18 X 1.5" Lg.* X .62" Lg.
"V"-Belt 1/2" x26" Lg. t
Ass'y.
Cotter Pin 1/8" Dia. X 1.0" Lg.*
736-0187 Fl.-Wash. .63" I.D. x 1.25"
O.D.
736-0921
L.-Wash. 1/2" I.D.*
712-0206 Hex Nut 1/2-13 Thd.*
712-0107 Hex Cent. L.-Nut 1/4-20 Thd.
732-0411 Extension Spring .78" O.D.
X .75" Lg. t
734-1036 Swivel Caster Wheel 5" Dia.
X 1.25"
732-0409 Extension Spring .38" O.D.
X 7.50" Lg. t
716-0104
Snap "E"-Ring .50" Dia.
Shaft T
748-0142
14570
732-0376
Flange Bearing .502" I.D. t
Gear Box Mounting Bracket t 69
Extension Spring .75" O.D.x
3.28" Lg. t
14565
Clutch Bracket Ass'y. t
714-0229 #2 Woodruff Key 3/32" Dia.
x .81" Lg.t
748-0227
Hex Flange Bearing Bronze
.625" I.D. t
738-0516
717-0493
16273
08348
Pinion Shaft .50" Dia. x 5.0"t
Gear Box Ass'y. Comp. T
Caster Arm Ass'y.
Drive Shaft .624" Dia. x
22.75" Lg. t
748-0136
Bevel Gear .50" I.D. x 14
Teeth
748-0108
Flange Bearing .503" I.D. t
08189 Gear Box t
748-0110
08187
748-0135
Flange Bearing .630" I.D. t
Gear Box Cover t
Bevel Gear .62" I.D. x 28
Teeth t
NEW
PART
REF.
PART
NO.
NO.
COLOR
CODE
DESCRIPTION
Spring Pin Spiral 3/16" Dia.
X 1.25" Lg. t
42 710-0726 Hex Wash. Hd. "AB" Tap Scr.
5/16" X .75" Lq.
43
46 748-0201
Engine
Spacer .63 I.D. x .88" O.D.
14530-638 Side Plate
49
50
51
715-0247
748-0288 Drive Pinion t
710-0170 Hex Locking Bolt 5/16-24
736-0159
734-1184
Spring Pin Spiral 3/16" Dia.
X 1.0" Lg. t
Fl.-Wash. .34" I.D. x .87" O.D.
Wheel Ass'y. Comp. 10.5"
x4" (677 Only)
741-0313 Bearings (677 Only)
54 750-0194
748-0192
Spacer .63" I.D. x 1.00" O.D.
X .94" Lg. (675,685,687)
Spacer .63" I.D. x .878" O.D.
X .79" Lg. (677)
55 710-0118 Hex Bolt 5/16-18 X .75" Lg.*
57 747-0542
Height Adjustment Crank
58 736-0117 Fl.-Wash. 138" I.D. x .62" O.D.
59 720-0171
61 710-0136
62 764-0162A
63 1539-019
64 749-0785
Crank Knob
Hex Bolt 1/4-20 X 1.75" Lg.
Vacuum Bag - Felt N
Push Speed Nut .25" Dia. Stud
Lower Handle (Painted)
749-0481 Lower Handle (Chrome)
66
67
70
726-0100
711-0737
714-0145
749-0786
Push Nut 3/8" Dia.
Stud Pin .250" Dia. x 1.75"
Internal Cotter Pin 3/8" Dia.
Upper Handle (Painted)
749-0480 Upper Handle (Chrome) N
71 738-0185 Rear Axle .624" Dia. x 24.37"
715-0249 Spring Roll Pin 5/32" Dia.
72
X 1.12 t
73
74
75
750-0142 Spacer .82" I.D.x 1.00" O.D.
X .305 Lg. t
736-0175
710-0352
L.-Wash. .265" I.D. t
Hex Self Tap Scr. 1/4" x 3/8"
Lg. t
76
14556
R.H. Pinion Guard t
14555 L.H. Pinion Guard (Not Shown
77 712-0298 Hex Jam Nut 1/4-20 Thd. t
78
79
80
736-0242 Belleville Washer
736-0300 Fl.-Wash. .35" I.D. x .87" O.D.
750-0528
Spacer .38" I.D. x .50" O.D. x
.180" Lg.
81
82
83
711-0797
712-0354
736-0169
Ferrule 3/8-8 x .38" Dia.
Hex Nut 3/8-8 Thd.
L.-Wash. 3/8" I.D.*
PART
-J.
1 05778
2 711-0679
3
4
6
7 14558 Belt Guard t 47
8
9
10
11
12 736-0119 L.-Wash. 5/16" I.D. 53 734-1035 Wheel Ass'y. - Comp. 12" x 3"
13 712-0267 Hex Nut 5/16-18 Thd.* (Incl. Ball Bearings)
14 16454 Engine Mounting Frame
15 714-0115
16
17
18
JLR
21
22
23
24 756-0367 "V"-Pulley 5/8" X 6.50" O.D.t
25
26
27
28
29
30
31
32
33
34
35
36
37
40
NEW
PART
N
tParts for Self-Propelled Units (Models 685,689, and 24687) only.
13
Page 14
Models 675, 685 and 689
14
Page 15
Models 675, 685 and 689
PARTS LIST FOR MODELS 675,685,689, 24677 and 24687 POWER VACUUMS
Ref.
No.
1
2
3 720-0170
4
5
8
9
10 14563
11
12 736-0119
13
14
15 14536 -
16
17 14541
18
19
20
21
22
23 14539
24 728-0173
25 14569
26
28
29
30
31
32
34 738-0143
35
36
Part
No.
14532 - 638
736-0242
Color
Code
Description
Air Duct Assembly
Belleville Wash. 34" I.D. x .87" O.D.
3-Arm Thumb Scr. 5/16-18 x .75" Lg.
749-0501
731-0608
14479
14562B
Tow Bar Half
Impeller Guard
Directional Discharge Ass'y.
Nozzle Ass'y-
Nozzle Plate Ass'y.
712-0267 Hex Nut 5/16-18 Thd.*
L. Wash. 5/16" I.D.
710-0191 Hex Bolt 3/8-24 X 1.25" Lg.*
736-0217
638
L.-Wash. 3/8" I.D. H.D.
Air Vane Plate Ass'y. (675 and 24677)
14557 - 638 Air Vane Plate Ass'y. w/pulley (685, 689 and
24687)
14496 - 638
Blower Housing Complete
Right Angle Bracket
710-0600
Hex Self-tap Scr. 5/16-18 x .50" Lg.
736-0231 Fl.-Wash. 5/16" I.D.
711-0758
710-0260
Hex Shoulder Nut .50 I.D.
Carriage Bolt 5/16-18 x .62" Lg.*
710-0627 Hex Locking Bolt 5/16-24 x .75" Lg.
Housing - Engine Brace Ass'y.
Pop Rivet (5-Required)
Wiper Retaining Strip
735-0214 Nozzle Wiper
710-0602 Hex Bolt 5/16-18 x 1.00" Lg.* t
710-0255 Truss Mach. Scr. 1/4-20 x .75" Lg.*
712-0287
736-0329
Hex Nut 1/4-20 Thd.*t
L.-Wash. 1/4" I.D.*t
748-0234 Shoulder Spacer t
Shid. Bolt .496 Dia. t
736-0219 Belleville Wash. .39 I.D. x 1.12 O.D. t
712-0181
Hex Jam L-Nut 3/8-16 Thd. t
New
Part
N
tOptional Parts
*For faster service obtain standard nuts, bolts and washers
locally. If these items cannot be obtained locally, order by
part number and size as shown on parts list.
(638 - MTD Red)
(621 - Brilliant Fire Mist)
When ordering parts, if color or finish is important use
the appropriate color code shown above. (e.g. Red Finish
- 14542 (638).
NOTE
This instruction manual covers various
models and all specifications shown do not
necessarily apply to your model. Specifica
tions subject to change without notice or
obligation.
15
NOTE: The engine is not under warranty by
the vacuum manufacturer... If repairs or
service is needed on the engine, please
contact your nearest author
ized engine service outlet.
Check the “Yellow Pages" of
your telephone book under
“Engines—Gasoline.”
Find it Fast
In The
Yellow Pages
Page 16
Hose Attachment Kit Model 290-204-000
is available 3S optional equipment
REPLACEMENT PARTS • P.O. BOX 360900 • CLEVELAND, OHIO 44136
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