HOMELITE
42cc/46cc CHAIN SAW
MODEL NOS. UT10517, UT10518 & UT10520
REPAIR SHEET
HOMELITE 42cc/46cc CHAIN SAWS – MODEL Nos. UT10517, UT10518 & UT10520
Part Numbers List
(View Parts Diagram Below)
1 671076001 Guide Bar Nut (5/16-18) 2
2 310627001 Guide Bar (UT10517 — 18 in with SAFE-T-TIP) (Includes Key Nos 42, 43) 1
310628001 Guide Bar (UT10518 — 18 in with SAFE-T-TIP)
(Includes Key Nos 42, 43) 1
310629001 Guide Bar (UT10520 — 20 in with SAFE-T-TIP) (Includes Key Nos 42, 43) 1
3 308116001 Guide Bar Adjustment Screw 1
4 631038001 Outer Guide Plate 1
5 T660619001 Screw (6-19 x 1/2 in TF) 1
6 660636001 Screw (10-16 x 1-1/2 in Special) 3
7 518042021 Top Cover, Black (UT10517) 1
518042010 Top Cover, Red (UT10518/UT10520) 1
8 660617001 Screw (8-16 x 16 mm Torx TF) 1
9 518049002 Air Filter Cover 1
10 870174001 Spark Plug (Champion RCJ6Y) 1
11 660625001 Screw (10-24 x 5/8 in Torx Pan Hd) 1
12 518055002 Fan Housing Baffle 1
13 308067004 Starter Cover Assembly 1
14 660632001 Screw (10-14 x 5/8 in, Truss Hd) 2
15 300948002 Fuel Cap Assembly 1
16 300949002 Oil Cap Assembly 1
17 660624001 Screw (8-32 x 5/16 in) 1
18 638467002 Outlet 1
19 638673001 Spark Screen 1
20 309310001 Muffler Assembly (Includes Key Nos 17-19) 1
21 671079001 Lock Nut (10-32) 3
22 660626001 Muffler Bolt (Square Hd) 3
23 631055001 Combination Wrench 1
24 671258001 Chain (UT10517 — 375 x 62 link, 18 in) 1
901430001 Chain (UT10518 — 325 x 72 link, 18 in) 1
900920027 Chain (UT10520 — 325 x 58 link, 20 in) 1
25 300957015 Chain Cover Assembly 1
26 900844001 Pre-Filter 1
27 631036001 Inner Guide Plate 1
28 671103001 E-Ring 1
29 631060001 Cupped Washer 1
30 300958001 Sprocket Drum and Bearing Assembly
(UT10517 — 375 chain) 1
300958002 Sprocket Drum and Bearing Assembly
(UT10518/UT10520 — 325 chain) 1
31 631039001 Spike Bar 1
32 678027002 Lock Nut (10-24) 1
33 300759005 Fuel Filter 1
34 631035001 Chain Catcher 1
35 900894001 Muffler Gasket 1
36 638455001 Heat Shield 1
37 511709002 Choke Lever, Yellow (UT10517) 1 511709012 Choke Lever, Black (UT10518/UT10520) 1
38 760338001 Ignition Switch 1
39 660637001 Screw (10-14 x 7/8 in, Truss Hd) 2
40 660621001 Screw (10-24 x 1/2 in) 1
41 660618001 Screw (10-14 x 1/2 in) 1
42 308949001 Safety Tip (UT10517) 1
308944001 Safety Tip (UT10518/UT10520) 1
43 660640001 Screw (Hex Head) 1
44 518061001 Scabbard (UT10520, Not Shown) 1 518061002 Scabbard (UT10517/UT10518, Not Shown) 1
987000210 Operator’s Manual (960970011)
3-11-09
(REV:04)
PARTS LIST (FIGURE A)
1 700106001 Heat Reflector Tape 1
2 671087001 Spacer Insert 4
3 570226001 Oil Outlet Grommet 1
4 660628001 Guide Bar Bolt 2
5 671077001 Speed Nut (“U”-type) 2
6 560955001 Duck Bill Valve 2
7 671088001 Element 2
8 671080001 Washer 4
9 660622001 Screw (10-24 x 2 in) 4
10 690765001 Hose Clamp 1
11 300951004 Chassis Assembly, Black (UT10517) 1
300951014 Chassis Assembly, Gray (UT10518/UT10520) 1
12 671077002 Speed Nut (“U”-type) 1
13 570247002 Rubber Tubing/07454-22 1
14 570247003 Rubber Tubing/07454-34 1
15 638024001 Spring 1
16 671075001 Retaining Ring 1
17 511723101 Hand guard, Black (UT10517) 1
511723111 Hand guard, Gray (UT10518/UT10520) 1
18 620282001 Handguard Actuating Pin 1
19 631063002 Brake Band 1
20 671095001 Spring Pin 1
21 678113001 Spring 1
22 511720002 Chain Brake Cover 1
23 660634001 Screw (8-16 x 5/16 in) 3
24 300954001 Chain Brake Link Assembly 1
25 671099001 Spring Pin (Small) 1
26 660635001 Screw (8-32 x 5/8 in) 1
27 671096001 Pivot (Right Hand) 1
28 671097001 Pivot (Left Hand) 1
29 631034002 Hair Pin 1
30 900885001 Throttle Cable 1
31 308088001 Fuel Pump 1
32 570247004 Rubber Tubing 1
33 570227001 Split Grommet 1
34 518044002 Control Panel, Black (UT10517) 1
518044012 Control Panel, Gray (UT10518/UT10520) 1
35 511724001 Front Handle, Black (UT10517) 1
511724011 Front Handle, Gray (UT10518/UT10520) 1
36 660631001 Screw (12-14 x 1 1/2 in) 1
37 511721004 Rear Handle, Black (UT10517) 1 511721014 Rear Handle, Gray (UT10518/UT10520) 1
38 671101001 Extension Spring 2
39 660632001 Screw (10-14 x 5/8 in) 2
40 660618001 Screw (10-14 x 1/2 in) 3
41 518051003 Lockout Throttle, Yellow (UT10517) 1
518051013 Lockout Throttle, Black (UT10518/UT10520) 1
42 660629001 Screw (10-14 x 3/4 in) 2
43 660719001 Screw (10-14 Thread Twin Helix) 1
44 631050001 Spring Retainer 1
45 660633001 Screw (10-14 x 1 3/8 in) 1
46 511722003 Handle Cover, Black (UT10517) 1
511722013 Handle Cover, Gray (UT10518/UT10520) 1
47 678037001 Torsion Ring 1
48 518052001 Trigger, Yellow (UT10517) 1
518052011 Trigger, Black (UT10518/UT10520) 1
49 518050001 Plug, Black (UT10517) 1
518050011 Plug, Gray (UT10518/UT10520) 1
50 631051001 Isolator Plate 1
51 T671980001 Isolator Spring 1
52 660630001 Screw (10-24 x 5/8 in) 1
53 660639001 Screw (8-32 x 5/8 in) 2
54 290195003 Ignition Switch Harness 1
55 300953001 Ignition Kit 1
PARTS LIST (FIGURE B)
1 640200004 Cylinder 1
2 678747001 Piston Ring 1
3 640350002 Piston 1
4 678183001 Retaining Ring 2
5 620392001 Piston Pin 1
6 309160001 Crankshaft Assembly 1
7 570220001 Shaft Seal 2
8 570221002 Bearing Case 2
9 671089002 Ball Bearing 2
10 640843001 Crankcase 1
11 660627001 Screw (8-32 x 5/8 in) 2
12 678123001 Nut (5/14-24) 1
13 631049001 Flat Washer 1
14 309012001 Flywheel Assembly 1
15 300950001 Oil Intake Tube Assembly 1
16 300945001 Oil Pump Assembly 1
17 T610389001 Left Hand Worm 1
18 631061001 Thrust Washer 1
19 300960003 Clutch Assembly 1
20 671267001 Wire Clamp 1
21 570243001 Intake Boot 1
22 518047001 Carburetor Adaptor Seal 1
23 308081001 Carburetor Adapter 1
24 671072001 Flat Washer 1
25 660629001 Screw (10-14 x 3/4 in) 3
26 518045001 Carburetor Plate 1
27 900886001 Carburetor Gasket 1
28 309364001 Carburetor Assembly 1
29 518048001 Air Filter Base 1
30 660634001 Screw (8-16 x 5/16 in) 1
31 660655001 Screw (10-32 x 1 3/4 in) 2
32 570242001 Grommet 1
33 309890003 Short Block Assembly (Inc Key Nos 1-11) 1