Homelite UT21506 Quick setup guide

HOMELITE
26cc MIGHTYLITE STRING TRIMMER
MODEL NOS. UT21506, UT21546, UT21907, UT21947
ALL VERSIONS
REPAIR SHEET

HOMELITE 26cc MIGHTYLITE STRING TRIMMER – MODEL NUMBERS UT21506 AND UT21907
2
1
4
25 26 27
5
7
6
8
3
11
13
15
14
23
17
18
19
21
20
24
9
16
2
22
10
12
13
15
28
29
FIGURE A

HOMELITE 26cc MIGHTYLITE STRING TRIMMER – MODEL NUMBERS UT21506 AND UT21907
3
KEY PART
NO. NUMBER DESCRIPTION QTY
PARTS LIST (FIGURE A)
* STANDARD HARDWARE ITEM – MAY BE PURCHASED LOCALLY
The model number will be found on a plate attached to the engine housing. Always mention the model number in all correspondence regarding your
STRING TRIMMER or when ordering repair parts.
1 870174001 * Spark Plug (Champion RCJ6Y) .........................1
2 940734008 Starting Label ....................................................1
3 678029002 * Hex Nut (M6)......................................................1
4 518496001 Choke Dial Cover...............................................1
5 678434001 Flat Washer........................................................1
6 678435001 * Hex Nut (M4)......................................................1
7 678434002 Wavy Washer.....................................................1
8 308680001 Fuel Cap ............................................................1
9 660697002 * Bolt (M6 x 20 mm) .............................................1
10 270032001 Throttle Cable ....................................................1
11 518529001 Throttle Trigger ..................................................1
12 518674001 Handle ...............................................................1
13 660643008 * Bolt (1/4-20 x 40 mm)........................................2
14 678034001 * Wing Nut (1/4-20) ..............................................1
15 678008001 Flat Washer........................................................2
16 660634001 * Screw (8-16 x 5/16 in.).......................................1
17 T308744001 Curved Shaft Grass Deflector
(Incl. Key Nos. 13-15) ........................................1
18 308746001 String Head Housing .........................................1
19 308044006 Single Line Spool and String .............................1
20 308042002 Spool Retainer...................................................1
21 678022001 Spring ................................................................1
22 940642020 Warning Label....................................................1
23 000998357 Boom Assembly (Inc. Key Nos. 2 and 22) .........1
24 120151001 String Head Assembly .......................................1
25 760700002 Switch................................................................1
26 940642025 Logo Label.........................................................1
27 940647008 Choke Label ......................................................1
28 518949001 * Wing Nut (1/4-20) ..............................................1
29 308741001 Handle Assembly
(Inc. Key Nos. 12, 13, 15 and 28) ......................1
987000037 Operator’s Manual (960089001)
5-14-08
(REV:06)
KEY PART
NO. NUMBER DESCRIPTION QTY

4
HOMELITE 26cc MIGHTYLITE STRING TRIMMER – MODEL NUMBERS UT21546 AND UT21947
10
3
1
2
23
14
17
31
32 18
19
20
24
21
22
4
56
7
9
8
11
25
26 29
28
27
12
15
13
16
30
FIGURE B

5
HOMELITE 26cc MIGHTYLITE STRING TRIMMER – MODEL NUMBERS UT21546 AND UT21947
KEY PART
NO. NUMBER DESCRIPTION QTY
PARTS LIST (FIGURE B)
* STANDARD HARDWARE ITEM – MAY BE PURCHASED LOCALLY
The model number will be found on a plate attached to the engine housing. Always mention the model number in all correspondence regarding your
STRING TRIMMER or when ordering repair parts.
1 870174001 * Spark Plug (Champion RCJ6Y) .........................1
2 940734008 Starting Label ....................................................1
3 678029002 * Hex Nut (M6)......................................................1
4 518496001 Choke Dial Cover...............................................1
5 678434001 Flat Washer........................................................1
6 678435001 * Hex Nut (M4)......................................................1
7 678434002 Wavy Washer.....................................................1
8 308680001 Fuel Cap ............................................................1
9 660697002 * Bolt (M6 x 20 mm) .............................................1
10 270032001 Throttle Cable ....................................................1
11 518529001 Throttle Trigger ..................................................1
12 518674001 Handle ...............................................................1
13 678008001 * Flat Washer........................................................1
14 678034001 Wing Nut (1/4-20) ..............................................1
15 660643008 * Bolt (1/4-20 x 40 mm)........................................1
16 518949001 * Wing Nut (1/4-20) ..............................................1
17 678436001 Mounting Bracket ..............................................1
18 308781001 Straight Shaft Grass Deflector
(Inc. Key Nos. 14 and 17) ..................................1
19 308746002 Large String Head Housing ...............................1
20 308044007 Dual Line Spool and String................................1
21 308042003 Spool Retainer...................................................1
22 000998358 Boom Assembly ................................................1
23 940642020 Warning Label....................................................1
24 678022001 Spring ................................................................1
25 120152001 String Head Assembly .......................................1
26 760700002 Switch................................................................1
27 660634001 * Screw (8-16 x 5/16 in.).......................................1
28 940642026 Logo Label.........................................................1
29 940647008 Choke Label ......................................................1
30 308741001 Handle Assembly
(Inc. Key Nos. 12, 13, 15, and 16) .....................1
31 678011002 Flange Washer...................................................1
32 678019002 Shaft Adapter ....................................................1
KEY PART
NO. NUMBER DESCRIPTION QTY

6
HOMELITE 26cc MIGHTYLITE STRING TRIMMER –
MODEL NUMBERS UT21506, UT21546, UT21907, UT21947
11
12
13
14
1
10
15 16
17
18
19
20
25
27
28
29
30
3
4
5
7
9
8
6
2
21
22
23
32
33
34
24
26
31

7
HOMELITE 26cc MIGHTYLITE STRING TRIMMER –
MODEL NUMBERS UT21506, UT21546, UT21907, UT21947
* STANDARD HARDWARE ITEM – MAY BE PURCHASED LOCALLY
KEY PART
NO. NUMBER DESCRIPTION QTY
PARTS LIST
The model number will be found on a plate attached to the engine housing. Always mention the model number in all correspondence regarding your
STRING TRIMMER or when ordering repair parts.
1 308891001 Short Block Assembly (Inc. Key Nos. 32-34).....1
2 660968001 * Screw (M4 x 19 mm)..........................................2
3 660967001 * Screw (M4 x 14 mm)..........................................3
4 638389001 Pulley Retainer...................................................3
5 308386001 Starter Pulley Assembly.....................................1
6 518502001 Pulley Handle.....................................................1
7 638033001 Spring & Container Assembly............................1
8 308672001 Front Housing ....................................................1
9 660970001 * Screw (M4 x 16 mm)..........................................4
10 308671001 Front Housing Assembly (Inc. Key Nos. 3-8;
Plus Key Nos. 10, 11 and 25 from pages 2 & 3) ...1
11 518504001 Rear Housing.....................................................1
12 660466001 * Screw (M4 x 8 mm)............................................4
13 901551001 * Intake Gasket.....................................................1
14 518497001 Heat Dam...........................................................1
15 518685001 Heat Dam Deflector ...........................................1
16 901552001 Carburetor Gasket .............................................1
17 308054001 Carburetor .........................................................1
18 518498001 Choke Base .......................................................1
19 660454001 * Screw (M5 x 70 mm)..........................................1
20 660453001 Double Sided Hex Bolt ......................................1
21 850108002 Ignition Module..................................................1
22 308863001 Lead Assembly ..................................................1
23 901452001 Muffler Gasket ...................................................1
24 308990016 Muffler Assembly...............................................1
25 308675002 Fuel Tank Assembly w/Cap
(UT21506 & UT21546) .......................................1
308675001 Fuel Tank Assembly w/Cap
(UT21907 & UT21947) .......................................1
26 638442001 Heat Shield ........................................................1
27 660970002 * Screw (M4 x 10 mm Shoulder) ..........................3
28 308811001 Flywheel Assembly ............................................1
29 631049001 Washer...............................................................1
30 638348001 Drive Connector.................................................1
31 660638003 * Screw (10-24 x 2-3/16 in.) .................................2
32 901550001 Gasket ...............................................................1
33 638337001 Crankcase Cover ...............................................1
34 660925003 * Screw (M4 x 12 mm)..........................................6
35 900849002 Starter Rope (42 in. (Not Shown).......................1
KEY PART
NO. NUMBER DESCRIPTION QTY