HOMELITE
42cc/46cc CHAIN SAW
MODEL NOS. UT10517, UT10518 & UT10520
REPAIR SHEET
HOMELITE 42cc/46cc CHAIN SAWS – MODEL Nos. UT10517, UT10518 & UT10520
6
8
24
25
23
7
9
1
10
4
37
28 29 30
38
5
15
27
42
3
33
13
1
1
12
3
1
40
43
41
32
14
2
20
34
2
6
18
19
36
1
6
17
39
22
21
35
2
HOMELITE 42cc/46cc CHAIN SAWS – MODEL Nos. UT10517, UT10518 & UT10520
The model number will be found on a plate attached to the engine housing. Always mention the model number in all correspondence regarding your
CHAIN SAW or when ordering repair parts.
PARTS LIST
KEY
NO.
PART
NUMBER
KEY
NO.
PART
NUMBER
DESCRIPTION
QTY
DESCRIPTION
QTY
1
2
671076001
310627001
Guide Bar Nut (5/16-18) ............................................. 2
Guide Bar (UT10517 — 18 in. with SAFE-T-TIP)
24
671258001
Chain (UT10517 — .375 x 62 link, 18 in.)................... 1
Chain (UT10518 — .325 x 72 link, 18 in.)................... 1
Chain (UT10520 — .325 x 58 link, 20 in.)................... 1
Chain Cover Assembly............................................... 1
Pre-Filter..................................................................... 1
Inner Guide Plate........................................................ 1
E-Ring......................................................................... 1
Cupped Washer.......................................................... 1
9
01430001
00920027
9
(
Includes Key Nos. 42, 43).......................................... 1
25
300957015
900844001
631036001
671103001
631060001
300958001
3
10628001
10629001
Guide Bar (UT10518 — 18 in. with SAFE-T-TIP)
Includes Key Nos. 42, 43).......................................... 1
Guide Bar (UT10520 — 20 in. with SAFE-T-TIP)
Includes Key Nos. 42, 43).......................................... 1
(
26
27
3
(
28
29
30
3
4
5
6
7
308116001
631038001
T660619001
660636001
518042021
Guide Bar Adjustment Screw..................................... 1
Outer Guide Plate....................................................... 1
Screw (6-19 x 1/2 in. T.F.) ........................................... 1
Screw (10-16 x 1-1/2 in. Special)............................... 3
Top Cover, Black (UT10517)....................................... 1
Top Cover, Red (UT10518/UT10520) ......................... 1
Sprocket Drum and Bearing Assembly
(UT10517 — .375 chain)............................................. 1
300958002
Sprocket Drum and Bearing Assembly
(
UT10518/UT10520 — .325 chain)............................. 1
518042010
31
32
33
34
35
36
37
631039001
678027002
300759005
631035001
900894001
638455001
511709002
Spike Bar.................................................................... 1
Lock Nut (10-24)......................................................... 1
Fuel Filter.................................................................... 1
Chain Catcher ............................................................ 1
Muffler Gasket............................................................ 1
Heat Shield................................................................. 1
Choke Lever, Yellow (UT10517).................................. 1
Choke Lever, Black (UT10518/UT10520)................... 1
Ignition Switch............................................................ 1
Screw (10-14 x 7/8 in., Truss Hd.).............................. 2
Screw (10-24 x 1/2 in.) ............................................... 1
Screw (10-14 x 1/2 in.) ............................................... 1
Safety Tip (UT10517).................................................. 1
Safety Tip (UT10518/UT10520).................................. 1
Screw (Hex Head)....................................................... 1
Scabbard (UT10520, Not Shown) .............................. 1
Scabbard (UT10517/UT10518, Not Shown)............... 1
Operator’s Manual (960970011)
8
9
660617001
518049002
870174001
660625001
518055002
308067004
660632001
300948002
300949002
660624001
638467002
638673001
309310001
671079001
660626001
631055001
Screw (8-16 x 16 mm Torx T.F.) .................................. 1
Air Filter Cover............................................................ 1
Spark Plug (Champion RCJ6Y) .................................. 1
Screw (10-24 x 5/8 in. Torx Pan Hd.).......................... 1
Fan Housing Baffle..................................................... 1
Starter Cover Assembly ............................................. 1
Screw (10-14 x 5/8 in., Truss Hd.).............................. 2
Fuel Cap Assembly .................................................... 1
Oil Cap Assembly....................................................... 1
Screw (8-32 x 5/16 in.) ............................................... 1
Outlet.......................................................................... 1
Spark Screen.............................................................. 1
Muffler Assembly (Includes Key Nos. 17-19) ............. 1
Lock Nut (10-32)......................................................... 3
Muffler Bolt (Square Hd.)............................................ 3
Combination Wrench.................................................. 1
10
11
12
13
14
15
16
17
18
19
20
21
22
23
511709012
38
39
40
41
42
760338001
660637001
660621001
660618001
308949001
308944001
4
4
3
4
660640001
518061001
5
9
3
18061002
87000210
-11-09
(
REV:04)
3
HOMELITE 42cc/46cc CHAIN SAWS – MODEL Nos. UT10517, UT10518 & UT10520
1
SEE
FIGURE B
24
5
2
23
2
7
6
2
2
5
4
28
55
18
3
23
2
21
20
2
5
3
4
17
19
16
14
13
15
29
5
30
3
6
3
5
3
5
2
3
7
12
51
0
6
7
5
34
33
32
4
8
1
1
4
0
4
3
8
39
31
9
10
8
8
4
7
41
4
5
46
40
4
4
4
39
3
9
4
2
Figure A
4
HOMELITE 42cc/46cc CHAIN SAWS – MODEL Nos. UT10517, UT10518 & UT10520
The model number will be found on a plate attached to the engine housing. Always mention the model number in all correspondence regarding your
CHAIN SAW or when ordering repair parts.
PARTS LIST (FIGURE A)
KEY
NO.
PART
NUMBER
KEY
NO.
PART
NUMBER
DESCRIPTION
QTY
DESCRIPTION
QTY
1
2
3
4
5
6
7
8
9
700106001
671087001
570226001
660628001
671077001
560955001
671088001
671080001
660622001
690765001
300951004
Heat Reflector Tape.................................................... 1
Spacer Insert.............................................................. 4
Oil Outlet Grommet .................................................... 1
Guide Bar Bolt............................................................ 2
Speed Nut (“U”-type) ................................................ 2
Duck Bill Valve............................................................ 2
Element ...................................................................... 2
Washer ....................................................................... 4
Screw (10-24 x 2 in.)................................................... 4
Hose Clamp................................................................ 1
Chassis Assembly, Black (UT10517).......................... 1
Chassis Assembly, Gray (UT10518/UT10520) ........... 1
Speed Nut (“U”-type) ................................................ 1
Rubber Tubing/07454-22 ........................................... 1
Rubber Tubing/07454-34 ........................................... 1
Spring......................................................................... 1
Retaining Ring............................................................ 1
Hand guard, Black (UT10517).................................... 1
Hand guard, Gray (UT10518/UT10520)...................... 1
Handguard Actuating Pin ........................................... 1
Brake Band................................................................. 1
Spring Pin................................................................... 1
Spring......................................................................... 1
Chain Brake Cover ..................................................... 1
Screw (8-16 x 5/16 in.) ............................................... 3
Chain Brake Link Assembly ....................................... 1
Spring Pin (Small)....................................................... 1
Screw (8-32 x 5/8 in.) ................................................. 1
Pivot (Right Hand) ...................................................... 1
Pivot (Left Hand)......................................................... 1
Hair Pin....................................................................... 1
Throttle Cable............................................................. 1
31
32
33
34
308088001
570247004
570227001
518044002
518044012
511724001
Fuel Pump .................................................................. 1
Rubber Tubing............................................................ 1
Split Grommet ............................................................ 1
Control Panel, Black (UT10517) ................................. 1
Control Panel, Gray (UT10518/UT10520)................... 1
Front Handle, Black (UT10517) .................................. 1
Front Handle, Gray (UT10518/UT10520).................... 1
Screw (12-14 x 1 1/2 in.) ............................................ 1
Rear Handle, Black (UT10517)................................... 1
Rear Handle, Gray (UT10518/UT10520)..................... 1
Extension Spring ........................................................ 2
Screw (10-14 x 5/8 in.) ............................................... 2
Screw (10-14 x 1/2 in.) ............................................... 3
Lockout Throttle, Yellow (UT10517) ........................... 1
Lockout Throttle, Black (UT10518/UT10520)............. 1
Screw (10-14 x 3/4 in.) ............................................... 2
Screw (10-14 Thread Twin Helix)................................ 1
Spring Retainer........................................................... 1
Screw (10-14 x 1 3/8 in.) ............................................ 1
Handle Cover, Black (UT10517) ................................. 1
Handle Cover, Gray (UT10518/UT10520)................... 1
Torsion Ring................................................................ 1
Trigger, Yellow (UT10517)........................................... 1
Trigger, Black (UT10518/UT10520) ............................ 1
Plug, Black (UT10517)................................................ 1
Plug, Gray (UT10518/UT10520) ................................. 1
Isolator Plate .............................................................. 1
Isolator Spring............................................................ 1
Screw (10-24 x 5/8 in.) ............................................... 1
Screw (8-32 x 5/8 in.) ................................................. 2
Ignition Switch Harness ............................................. 1
Ignition Kit .................................................................. 1
35
511724011
3
3
6
7
660631001
511721004
511721014
10
38
39
40
41
671101001
660632001
660618001
518051003
11
300951014
12
13
14
15
16
17
671077002
570247002
570247003
638024001
671075001
511723101
518051013
42
43
44
45
46
660629001
660719001
631050001
660633001
511722003
511723111
18
19
20
21
22
23
24
25
26
27
28
29
30
620282001
631063002
671095001
678113001
511720002
660634001
300954001
671099001
660635001
671096001
671097001
631034002
900885001
511722013
4
4
7
8
678037001
518052001
518052011
49
518050001
518050011
50
51
52
53
54
55
631051001
T671980001
660630001
660639001
290195003
300953001
5
HOMELITE 42cc/46cc CHAIN SAWS – MODEL Nos. UT10517, UT10518 & UT10520
23
20
24
30
25
21
22
29
2
6
7 28
2
1
2
3
4
25
31
33
32
4
5
7
8
9
6
17
19
18
16
9
7
8
1
2
3
1
10
14
15
11
Figure B
6
HOMELITE 42cc/46cc CHAIN SAWS – MODEL Nos. UT10517, UT10518 & UT10520
The model number will be found on a plate attached to the engine housing. Always mention the model number in all correspondence regarding your
CHAIN SAW or when ordering repair parts.
PARTS LIST (FIGURE B)
KEY
NO.
PART
NUMBER
KEY
NO.
PART
NUMBER
DESCRIPTION
QTY
DESCRIPTION
QTY
1
2
3
4
5
6
7
8
9
640200004
678747001
640350002
678183001
620392001
309160001
570220001
570221002
671089002
640843001
660627001
678123001
631049001
309012001
300950001
300945001
T610389001
Cylinder ...................................................................... 1
Piston Ring................................................................. 1
Piston ......................................................................... 1
Retaining Ring............................................................ 2
Piston Pin ................................................................... 1
Crankshaft Assembly ................................................. 1
Shaft Seal................................................................... 2
Bearing Case.............................................................. 2
Ball Bearing ................................................................ 2
Crankcase .................................................................. 1
Screw (8-32 x 5/8 in.) ................................................. 2
Nut (5/14-24) .............................................................. 1
Flat Washer................................................................. 1
Flywheel Assembly..................................................... 1
Oil Intake Tube Assembly........................................... 1
Oil Pump Assembly.................................................... 1
Left Hand Worm ......................................................... 1
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
631061001
300960003
671267001
570243001
518047001
308081001
671072001
660629001
518045001
900886001
309364001
518048001
660634001
660655001
570242001
309890003
Thrust Washer ............................................................ 1
Clutch Assembly ........................................................ 1
Wire Clamp................................................................. 1
Intake Boot................................................................. 1
Carburetor Adaptor Seal ............................................ 1
Carburetor Adapter .................................................... 1
Flat Washer................................................................. 1
Screw (10-14 x 3/4 in.) ............................................... 3
Carburetor Plate......................................................... 1
Carburetor Gasket...................................................... 1
Carburetor Assembly.................................................. 1
Air Filter Base ............................................................. 1
Screw (8-16 x 5/16 in.) ............................................... 1
Screw (10-32 x 1 3/4 in.) ............................................ 2
Grommet .................................................................... 1
Short Block Assembly (Inc. Key Nos. 1-11) ............... 1
10
11
12
13
14
15
16
17
