Operator’s Manual
Rear-tine Tiller Model
664D—Pony®
E666M—Pony®
IMPORTANT:READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brush-
covered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any).
If a spark arrester is used, it should be maintained in effective 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 by contacting the service department at Troy-Bilt LLC, P.O. Box 361131 Cleveland, Ohio 44136-0019.
TROY-BILT LLC, P.O. BOX 361131, CLEVELAND, OH 44136-0019
PRINTED IN USA
FROM NO. 770-10597A
(11/2002)
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Parts List 29
Models 664D & E666M
HANDLEBAR ASSEMBLY and CONTROL LEVERS
REF.
No.
PART
No.
REF.
No.
PART
No.
DESCRIPTION
QTY.
DESCRIPTION
QTY.
1
2
3
3A
4
5
5A
6
7
8
9
1918811
GW-9126
777I22088
777D05553
1916784
1186347
GW-9955
1900475
710-0514
736-3050
712-3000
1918791
GW-9442
Handlebars (Incl. Refs. 2, 3 & 3A).......
Grip .....................................................
Decal, Control Panel ...........................
Decal, Model Name/Logo ....................
Reverse Clutch Control Cable ..............
Height Adjustment Screw ...................
Washer, Keyed.....................................
Bracket, Handlebar Height Adjustment
Hex Hd. Screw, 3/8-16 x 1*.................
Washer, Plain (flat) 3/8, S.A.E. ............
Hex Locknut, 3/8-16............................
Cable, Forward Clutch Control.............
Wheel Gear Control and Cable Assy.
(Incl. Refs. 14, 15, 19, 21, 22 & 23)
Knob, Wheel Gear Control Lever..........
1
2
1
1
1
1
1
1
2
2
2
1
15
16
17
19
21
22
23
24
25
1186211
710-0216
736-0169
725-0157
1114748
1100240
1186208
GW-9390
1918840
Hex Nut, 5/16-24 .................................
Hex Hd. Screw, 3/8-16 x 3/4*..............
Lockwasher, 3/8 ..................................
Cable Ties, Plastic................................
Round Hd. Screw, #10-32 x 1/2 ..........
Lockwasher, #10 .................................
Hex Nut, #10-32 ..................................
Grip .....................................................
Bail, Forward Clutch Control (Incl.
two Ref. 24).....................................
Sems Nut.............................................
Bracket, Bail Support...........................
Hex Flange Screw, self-tapping,
2
2
2
2
6
2
2
2
1
4
2
35
36
42
GW-9853
GW-20806
710-0599
10
13
1
1
1/4-20 x 1/2*...................................
2
14
GW-9057
* Specify GRADE 5 if ordering part locally.
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30 Parts List
Models 664D & E666M
ENGINE, SUPPORT BRACKETS, PULLEYS, BELTS, BELT COVER
36
5
6
1
Reverse
Clutch Cable
7
7
2
3
4
9
10
20
55
13
11
35
14
16
17
15
56
16
45
52
35
40
20
39
42
46
18
48
21
45
(Screw, Ref. 47, secures
Forward Clutch Cable –
page 28, Ref. 10)
20
43
38
44
49
51
50
43
44
53
54
8
22
12
47
9
37
24
25
41
23
26
27
30
3
28
29
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Parts List 31
Models 664D & E666M
ENGINE, SUPPORT BRACKETS, PULLEYS, BELTS, BELT COVER
REF.
No.
PART
No.
REF.
No.
PART
No.
DESCRIPTION
QTY.
DESCRIPTION
QTY.
1
**
**
Engine – standard recoil start ............
Engine – electric start ........................
Bracket, Clutch Cable ..........................
Lockwasher–5/16................................
Hex Hd. Screw, 5/16-24 x 1/2.............
Decal, Hot Surfaces/Belt Warning .......
Cover (Incl. Ref. 5)..............................
Flange Lock Nut, 5/16-18....................
Key, 3/16 x 1-1/2 ................................
Shim ...................................................
Pulley, Engine Drive ............................
Belleville Washer.................................
Hex Hd. Screw, 5/16–24 x 1-1/8.........
Hex Hd. Screw, 5/16–18 x 2 ...............
Reverse Idler Arm ...............................
Pulley, Reverse Idler ...........................
Flat Washer, 5/16................................
Belt Guide, Wire Formed ....................
Hex Head Screw, 5/16-24 x 1..............
Washer, Shoulder ...............................
Washer, Flat, 1-1/8..............................
Spring, Reverse Return.......................
Transmission Pulley............................
Support Washer..................................
Reverse Clutch Belt.............................
Forward Clutch Belt.............................
Self-tapping Screw, #10-32 x 1/2, ......
1
1
1
6
2
1
1
2
1
1
1
2
1
1
1
1
2
1
1
1
3
1
1
1
1
1
4
27
28
29
30
31
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
GW-20339
712-0267
1186329
1916797
1916796
710-0805
777I20942
1918774
GW-90063
710-3037
736-0275
1918846
GW-55088
736-0119
712-0267
1917746
1918744
1767754
1916727
712-3000
GW-9090
710-0347
712-0158
1754128
736-0463
714-04029
710-0539
Guard, Belts/Pulleys............................
Hex Nut, 5/16–18................................
Hex Flange Screw, 5/16-18 x 3/4* ......
Engine Support Bracket, left side ........
Engine Support Bracket, right side......
Hex Hd. Screw, 5/16–18 x 1-1/2.........
Decal, Stabilization..............................
Mounting Bar ......................................
Hex Flange Screw, 5/16-18 x 1 ...........
Hex Hd. Screw, 5/16-18 x 2-1/4*........
Flat Washer, 5/16'...............................
Belt Guide, Pony .................................
Pivot Bushing......................................
Lockwasher, 5/16................................
Hex Nut, 5/16-18.................................
Washer, Shoulder ...............................
Idler Arm, Forward Tiller Direction......
Screw, self tapping, #10-24 ................
Spring .................................................
Hex Locknut, 5/16-18 .........................
Idler Pulley, Forward ..........................
Screw, 3/8-16 x 1-3/4 .........................
Hex Lock Nut, 5/16-18........................
Screw, 1/4-20 x 3/4 ............................
Flat Washer–1/4..................................
Key, .188 x 1.75..................................
Screw, 3/8-24 x 1.75...........................
1
4
4
1
1
5
1
2
4
1
1
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1917326
736-0119
710-0107
777S30651
1917139
712-3004A
1108841
GW-1138-1
619-04015
GW-9944
GW-9572
710-3103
1918731
1916535
1107382
1916725
710-0117
1917746
GW-9929
1916728
1916522
GW-1440
1918812
1909404
1900396
* Specify GRADE 5 if ordering part locally.
** See your local authorized engine service dealer for engine parts or
service. Refer to engine nameplate for engine type and code
information.
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32 Parts List
Models 664D & E666M
TRANSMISSION HOUSING, COVERS, SEALS, GASKETS, PLUGS
NOTE 1: These screws are a special sealing screw
that cannot be reused without risking the loss of
transmission oil. If these screws are loosened or
removed, they must be replaced with new screws.
REF.
No.
PART
No.
REF.
No.
PART
No.
DESCRIPTION
QTY.
DESCRIPTION
QTY.
1
2
3
4
5
6
GW-9621
1105620
721-04001
1186329
1983632
GW-11513
Oil Seal (Double Lip), Wheel Shaft......
Pipe Plug, 1/4, ...................................
Seal, Transmission Bore .....................
Hex Flange Screw, 5/16-18 x 3/4* ......
Oil Seal, Input Pinion Shaft .................
Transmission Cover (Incl. four Ref. 18
and two ea. Refs. 21 & 22)..............
Gasket, Transmission Top Cover ........
Transmission Case Assy. ....................
Plug ....................................................
Mounting Plate, Wheel Clutch Cable ...
Oil Seal, Tiller Shaft.............................
Hex Flange Screw, 5/16-18 x 5/8* ......
2
2
1
6
1
13
14
GW-20873
GW-1129-1
Tiller Housing Cover, left side .............
Gasket, Tiller Housing Cover, .010"
(fits all covers) ................................ A/R
Screw Kit: Incl. three 1/4-20 x 7/8
Self-Sealing Screws ........................ A/R
Rear Bearing Cap ................................
Gasket, Rear Bearing Cap, .010"
Thick ............................................... A/R
Hex Flange Screw, 5/16-18 x 1* .........
Screw Kit: Incl. five 1/4-20 x 5/8
Self-Sealing Screws ........................ A/R
Lockwasher, 3/8..................................
Hex Hd. Screw, 3/8-16 x 3/4*.............
1
15
1915089
16
17
GW-1115
GW-1124-2
1
1
1
1
1
1
2
2
7
8
9
10
11
12
GW-20694
619-04010
GW-9467
GW-20889
721-04035
1186328
18
19
GW-90063
1915087
4
21
22
736-0169
710-0216
2
2
* Specify GRADE 5 if ordering part locally.
A/R – As Required
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Parts List 33
Models 664D & E666M
DRIVE SHAFT, INPUT PINION SHAFT and GEAR ASSEMBLIES
REF.
No.
PART
No.
REF.
No.
PART
No.
DESCRIPTION
QTY.
DESCRIPTION
QTY.
MAIN DRIVE SHAFT
INPUT PINION SHAFT & GEAR ASSEMBLY
1
2
3
4
GW-1714
GW-20718
GW-9301
GW-20912
Bearing, Tapered Roller with Race ....
Spur Gear..........................................
Key, 3/16 sq. x 1 ...............................
Main Drive Shaft (Drive shaft is one-
piece with integral, single-lead,
work-hardened front worm, and
integral, six-lead, work-hardened
rear worm. Also includes pressed-
on GW-1714 and GW-9301)..........
Shim, Rear Bearing Cap, .010" thick
(see Note below) ........................... A/R
Shim, same as above, but .030" thick
(see Note)...................................... A/R
Shim, same as above, but .005" thick
(see Note)...................................... A/R
Shim Set (Incl. two GW-1224-1; two
1224-2 and one GW-1224-3) ........ A/R
1
1
1
6
7
GW-9572
GW-9944
Hex Hd. Screw, 5/16-24 x 1-1/8*......
Washer, Disc Spring (concave
1
surface faces pulley)......................
Key, 3/16 sq. x 1-1/2.........................
Transmission Drive Pulley.................
Support Washer ................................
Oil Seal, Input Pinion Shaft................
Retaining Ring (external) ..................
Thrust Washer...................................
Bushing.............................................
Set Screw, 5/16-18 x 3/8*.................
Input Pinion (steel shaft)...................
Input Pinion Gear ..............................
Retaining Ring (external) l.................
Pinion Assy. (Incl. one each Refs. 16,
1
1
1
1
1
1
2
1
1
1
1
1
8
9
1108841
1916522
10
11
12
13
14
15
16
17
18
19
GW-1440
721-04044
1113527
GW-9953
GW-9428
GW-9677
GW-20791
GW-20792
GW-9093
GW-20799
1
5
5
GW-1224-1
GW-1224-2
GW-1224-3
GW-1325C
5
...
17 and 18 ...................................... A/R
Retaining Ring (internal) ..................
20
GW-9517
1
NOTE: Shim between drive shaft rear bearing and rear bearing cap to achieve 5-to-10 thousandths of an inch (.005-.010) end play on drive shaft.
A/R - As Required
* Specify GRADE 5 if ordering part locally.
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34 Parts List
Models 664D & E666M
WHEEL SHAFT, ECCENTRIC SHAFT and TILLER SHAFT ASSEMBLIES
REF.
No.
PART
No.
REF.
No.
PART
No.
DESCRIPTION
QTY.
DESCRIPTION
QTY.
1
2
3
---
---
---
4
5
6
7
8
721-04031
1909950
GW-1166-1
GW-1166-2
GW-1166-3
GW-1166-4
GW-1086
711-04091
GW-9373
GW-20914
GW-9935
Oil Seal..............................................
Retaining Ring (heavy-duty, external)
Shim, 1-1/64 I.D., .062" thick ............ A/R
Shim, as above, but .030" thick ......... A/R
Shim, as above, but .015" thick ......... A/R
Shim, as above, but .010" thick ......... A/R
Bushing.............................................
Wheel Shaft (Incl. Ref. 6) ..................
Hi-Pro Key, 1/4 x 1-5/16....................
Wheel Drive Worm Gear (cast-iron) ..
Shim (between key and gear),
2
2
9
10
11
12
13
14
15
16
17
18
19
GW-20712
611-04002
GW-1442
GW-9055
721-04034
GW-20700
710-3013
741-3037
711-04080
GW-1104
GW-20913
Wheel Drive Clutch (cast-iron) ..........
Eccentric Shaft ..................................
Pin, Eccentric Shaft ...........................
Spring ...............................................
Oil Seal..............................................
Eccentric Shaft Lever.........................
Hex Hd. Screw, 1/4-20 x 1/2* ...........
Ball Bearing .......................................
Tiller Shaft (Incl. Ref. 18) ..................
Woodruff Key, 1/4 x 1-1/4.................
Tiller Drive Worm Gear (bronze) .......
1
1
1
1
1
1
1
2
1
1
1
2
1
1
1
1.016 I.D. x 1.468 O.D. x .062
Thick..............................................
1
* Specify GRADE 5 if ordering part locally.
A/R - As Required
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Parts List 35
Models 664D & E666M
BOLO TINES, WHEELS
NOTE 1: Custom Tilling Tines are
available for your tiller. These are
special hard-faced tines that are
thicker than standard tines.
13
13
IMPORTANT: Left and right sides of
tiller are determined by standing in
operator position and facing direc-
tion of forward travel.
REF.
No.
PART
No.
REF.
No.
PART
No.
DESCRIPTION
QTY.
DESCRIPTION
QTY.
1
2
710-3105
Hex Hd. Screw, 3/8-16 x 1-1/4*.......... 16
--
--
--
GW-2475-1
Custom Tilling Bolo Tine, Left hand
tine (see Note 1 above) ...................
Custom Tilling Bolo Tine, Right hand
tine (see Note 1 above) ...................
Custom Tilling Bolo Tine Replacement
Set (Incl. eight ea. right hand and
left hand custom tines, and sixteen
each of Refs. 1 and 3).....................
GW-1270-2A Bolo Tine-single. Right hand tine
used on left side of tiller. (Incl.
8
8
GW-2475-2
GW-10802
two ea. Refs. 1 and 3) .....................
8
2
2
3
5
7
712-0375
710-3096
Hex Locknut, 3/8-16 ...........................
Hex Hd. Screw, 3/8-16 x 2, Grade 8....
GW-1270-1A Bolo Tine-single. Left hand tine
used on right side of tiller. (Incl.
1
two ea. Refs. 1, 9 and 10) ...............
1902154010 Tine Holder. For left and right sides ....
8
2
9
10
11
12
13
712-3017
736-0169
GW-9380
GW-9338
1917487
Hex Nut, 3/8-16................................... 16
Lock Washer, 3/8................................ 16
8
--
1901118
Bolo Tine Replacement Set (Incl. eight
ea. right hand and left hand tines,
and sixteen ea. Refs. 1 and 3).........
Clevis Pin, .312 x 1-3/4 ......................
Hitch Pin .............................................
Wheel and Tire Assembly ...................
2
2
2
1
* Specify GRADE 5 if ordering part locally.
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36 Parts List
Models 664D & E666M
ROW MARKER ATTACHMENT
(See Detail A)
ROW MARKER ATTACHMENT – OEM-290-257
(Complete – Attaches to Furrower Attachment)
DETAIL A
MAIN SUPPORT/YOKE ASSEMBLY
PART # 1904522001
BUMPER ATTACHMENT
20
19
23
22
21
BUMPER
OEM-290-254
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Parts List 37
Models 664D & E666M
ROW MARKER ATTACHMENT & BUMPER ATTACHMENT
REF
No.
PART
No.
REF
No.
PART
No.
DESCRIPTION
QTY.
DESCRIPTION
QTY.
Row Marker Attachment (option) – OEM-290-254
Row Marker Main Support & Yoke Assembly – Part #1904522001
1
1904522001 Main Support & Yoke Assy–
complete. (Incl. Ref. No.'s
10
1186349
Screw–hex flanged locking,
3/8-16 x 1-1/2* .............................
Stop Bar ............................................
Yoke..................................................
Tube Key–square...............................
Washer–friction.................................
Main Support ....................................
Washer–square hole..........................
Washer–disc spring ..........................
Nut–hex 3/8-16 .................................
1
1
1
1
2
1
1
1
1
10,11,12,13,14,15,16,17 & 18)..........
Marker Blade–blade only...................
1904524001 Marker Arm–main arm ......................
1904523001 Marker Arm–extension arm with
stop pin .........................................
1
1
1
11
12
13
14
15
16
17
18
GW-1593
GW-1592
GW-1591
GW-1590
GW-1588
GW-1589
GW-9925
1186231
2
3
4
GW-1594
1
1
5
6
GW-9347
Hitch Pin–(incl. in Hardware Pkg
GW-1837)......................................
Thumbscrew–1/4-20 x 1/2, not
avail. sep. (see hardware pkg.
GW-1837)......................................
Nut Bar–(incl. in hardware pkg
GW-1837)......................................
Nut–hex, 10-24 w/attached start
washers, not avail. sep. (see
GW-9786
2
1
Bumper – OEM-290-254
7
8
GW-1596
GW-9828
19
20
21
1918749001 Bumper (includes Ref. 20) ...............
1
1
777S30653
710-3073
Decal - Caution..................................
Screw–hex hd., 5/16-18 x 2-1/4*,
not avail. separately
hardware pkg #1837) ....................
Screw–round hd.,10-24 x 1, not
avail. sep. (see hardware pkg
GW-1837)......................................
Hardware Package–includes: one
GW-9347 hitch pin (Ref. 5), two
GW-9786 thumbscrews (Ref. 6),
one GW-1596 nut bar (Ref. 7),
two GW-9828 hex nuts (Ref. 8),
two 1100135 screws (Ref. 9) ........
2
2
9
1100135
GW-1837
(order #1918781 hardware kit) ..
Lockwasher–5/16*, not avail.
separately (order #1918781
hardware kit) ...............................
Nut–hex, 5/16-18*, not avail.
separately (order #1918781
hardware kit) ...............................
Hardware Kit: Incl. four each of
Refs. 21, 22 and 23 .......................
4
4
22
23
---
736-0119
712-0267
1918781
---
4
1
1
Note: Common hardware listed above as “not available separately” can be found at
most hardware stores.
* Specify GRADE 5 if ordering part locally.
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38 Parts List
Models 664D & E666M
HOOD, BRACKET and DEPTH REGULATOR
REF.
No.
PART
No.
REF.
No.
PART
No.
DESCRIPTION
QTY.
DESCRIPTION
QTY.
1
1917605
Tine Hood (Incl. hood flap and
11
12
13
14
15
16
17
18
GW-9120
GW-9119
710-3005
GW-1113-1
712-0798
GW-20775
777S30649
GW-9553
Retaining Ring (tolerance ring)...........
Knob, Depth Regulator (Incl. Ref. 11).
Hex Hd. Screw, 3/8-16 x 1-1/4*..........
Bushing, Drag Bar...............................
Hex Nut, 3/8-16...................................
Drag Bar .............................................
Decal, operating instructions ..............
Hex Hd. Screw, self-tapping,
1
1
2
2
2
1
1
Ref.17)............................................
Lockwasher, 3/8..................................
Bracket–hood & depth regulator
1
2
2
3
710-0169
GW-2527
(Incl. Ref. No. 9).............................
Hex Flange Screw, 5/16-18 x 5/8* ......
Hex Locknut, 1/4-20 ...........................
Hex Hd. Screw, 1/4-20 x 1* ................
Spring .................................................
Spacer.................................................
Roll Pin (spiral), 1/4 x 1 .....................
Depth Adjustment Bar Assembly
1
2
1
1
1
1
1
4
5
6
7
8
9
10
1186328
712-0291
710-0597
GW-9384
GW-9534
1185469
GW-1117A
5/16-18 x 1/2* ................................
Hex Flange Screw, self-tapping,
1/4-20 x 1/2* ..................................
2
2
19
710-0599
(Incl. Refs. 11 and 12) ....................
1
* Specify GRADE 5 if ordering part locally.
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Parts List 39
Models 664D & E666M
HILLER/FURROWER ATTACHMENT
HILLER/FURROWER – OEM-290-251
(Viewed from front of tiller)
REF.
No.
PART
No.
REF.
No.
PART
No.
DESCRIPTION
QTY.
DESCRIPTION
QTY.
1
2
3
4
5
6
7
8
1900771001 Furrower Blade..................................
1
4
4
4
4
1
1
1
9
10
11
12
GW-9725
1100243
1186231
GW-9318
Carriage Bolt, 3/8-16 x 1-1/2.............
Lockwasher, 3/8, plated ....................
Hex Nut, 3/8-16, plated .....................
Clinch Pin..........................................
2
2
2
1
1186098
1177548
GW-9902
GW-9824
Carriage Bolt, 5/16-18 x 3/4 ..............
Star Washer, External Tooth, 5/16.....
Plain Washer, 5/16 S.A.E...................
Wing Nut, 5/16-18.............................
1900773001 Hiller Wing, left..................................
1900774001 Hiller Wing, right ...............................
1900772001 Blade Mounting Bracket ....................
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40 Parts List
Model E666M
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Parts List 41
Model E666M
ELECTRIC START ASSEMBLY
REF.
No.
PART
No.
REF.
No.
PART
No.
DESCRIPTION
QTY.
DESCRIPTION
QTY.
1
2
3
4
5
1186073
1186211
1186390
1186389
1901202
Carriage Screw, 1/4-20 x 1.25...........
Hex Nut, 5/16-24...............................
Flange Screw, 1/4-20 x .625..............
Hex Locknut, 1/4-20..........................
Cable (ground wire to starter
motor bracket)...............................
Recharge Wire Assembly ..................
Wire Harness Assy. (available as
complete assembly only). Incl.
wire assy. w/connector to large
solenoid stud (red wire); wire
2
2
2
2
8
9
1917262
686-04024
710-0599
712-3006
725-0157
725-0267
725-1706
736-0119
736-0147
736-0607
GW-2614
96510
Ground Wire Assy. (shut off) ............
Battery Bracket Assembly, Pony........
Self-tapping Screw, 1/4-20 x .5.........
Hex Nut, 1/4-20.................................
Cable Tie............................................
Ignition Switch ..................................
Battery, 270 CCA...............................
Lock Washer 5/16 .............................
Lock Washer, #10 .............................
External Lock Washer, 5/16...............
Keyswitch Clamp...............................
Cable (solenoid to starter motor) ......
Solenoid (Incl. nuts and washers
1
1
3
2
1
1
1
2
1
2
1
1
10
11
12
13
14
15
16
17
18
19
20
2
1
6
7
1901894
1908118
assy. w/connector to small
solenoid stud (red wire); wire
96514
assy. w/connector to solenoid
grounding screw (red wire); wire
assy w/connector to engine ground
shut-off (green wire); plastic
for cables and wires).....................
Boot, Insulating.................................
Hex Locknut, #10-32.........................
Label, Ignition Switch........................
1
2
1
1
21
22
—
97020
9853
777S30648
protector tube; wire terminal .........
1
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