Husqvarna MZ5424S User manual

Gasoline containing up to
10% ethanol (E10) is acceptable
for use in this machine.
The use of any gasoline exceeding
10% ethanol (E10) will void the
product warranty.
Parts Manual
MZ5424S / 967003903
Please read the operator’s manual carefully and make sure
you understand the instructions before using the machine.

©2013 All rights reserved.
Orangeburg SC. Printed in U.S.A.
When you need spare parts or support in service
questions, warranty issues, etc., please consult
the following professional:
Manufacturing Number
The machine’s manufacturing number can be found on
the printed plate affixed to the engine compartment.
Stated on the plate, from the top are:
• The machine’s type designation (I.D.).
• The manufacturer’s type number (Model).
• The machine’s serial number (Serial no.)
Please have the type designation and serial number
available when ordering spare parts.
This manual belongs to the machine with the
manufacturing number:
Engine Transmission
The engine’s manufacturing number is stamped on
one of the valve covers.
The plate states:
• The engine’s model.
• The engine’s type.
• Code
Please have these available when ordering spare
parts.
The wheel motors and hydrostatic pumps have a
barcode decal affixed at the rear.
Accessories Available
COLLECTION SYSTEM ..................966 721201
MULCH KIT .....................................531 309643

CONTENTS
NOTE: ALL FASTENERS ARE GRADE 5 UNLESS OTHERWISE SPECIFIED.
FRAME ..................................................................... 4
ENGINE PLATE ........................................................ 6
STEERING ............................................................... 8
IGNITION ................................................................ 10
PARKING BRAKE .................................................. 12
HYDRAULIC PUMP-MOTOR ................................. 14
WHEELS ................................................................ 16
MOWER LIFT / DECK LIFT .................................... 18
MOWER DECK / CUTTING DECK ........................ 20
SEAT ...................................................................... 22
DECALS ................................................................. 24
ACCESSORIES
BAGGER .......................................................... 26
CHUTES .......................................................... 28

4
FRAME
7
2
1
25
4
3
26
9
6
27
24
10
12
5
23
13
30
20
32
15
33
19
8
14
28
28
23
30
22
30
19
17
25
11
16
21
30
30
30
31
18
28
29
19

5
ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION
FRAME
1.. 575 017202 ....1 ....PLATE, BATTERY, BLK
2.. 575 348402 ....1 ....GUARD, REAR GRY
3.. 577 256802 ....1 ....PANEL, LT ORG
4.. 577 256902 ....1 ....PANEL, RT ORG
5.. 539 132744 ....1 ....PLATE w/ SAFTY DECAL ORG
6.. 539 132380 ....1 ....PLATE, FOOTREST ORG
7.. 539 131579 ....1 ....SIDE, RT ORG
8.. 539 131577 ....1 ....SIDE, LT ORG
9.. 539 977778 ....2 ....PAD, ABRASIVE LG
10.. 539 121322 ....2 ....PAD, ABRASIVE SM
11.. 575 245202 ....2 ....BRACKET, DAMPENER
12.. 575 230402 ....1 ....SHIELD, MUFFLER BLK
13.. 505 256401 ....2 ....STOP, DECK
14.. 575 533602 ....2 ....MOUNT, TANK BLK
15.. 539 102587 ....5 ....BUMPER
16.. 539 104411 ....1 ....KNOB w/ STUD
17.. 539 132859 ....1 ....SHIELD, HEAT
18.. 539 104763 ....8 ....RETAINER, U TYPE 5/16-18
19.. 525 464701 ....5 ....HHFS 5/16-18 x ¾
20.. 539 131780 ....4 ....HHFS 5/16-18 x 3¾
21.. 525 544001 ....1 ....HHFS 5/16-18 x 1¼ TPBLT
22.. 539 131781 ....2 ....HHFS 3/8-16 x 2¾
23.. 539 133006 ....4 ....HHFS 3/8-16 x 2½
24.. 539 102335 ....2 ....HCS 5/16-18 x 4
25.. 539 990316 ....6 ....RHSNB 5/16-18 x ¾
26.. 539 990208 ....3 ....RHSNB 5/16-18 x 1
27.. 872 050606 ....2 ....RHSNB 3/8-16 x ¾
28.. 539 107475 . . 12 ....BOLT 5/16-18 x ¾ THD FRM
29.. 539 200282 ....6 ....NUT 3/8-16 HEX JAM NYLOC
30.. 539 112899 ....6 ....NUT 5/16-18 HEX FLANGE NYL
31.. 521 996501 ....2 ....NUT 3/8-16 HEX FLG NYLOC
32.. 539 990250 ....1 ....WASHER
33.. 539 990188 ....2 ....WASHER 5/16 SAE FLAT

6
ENGINE PLATE
1
33
11
41
40
36
17
14
12
23
30
20
28
15
13
43
5
4
6
42
27
51
10
21
7
9
34
29
37
47
35
49
19
2
3
24
50
38
43
18
48
16
31
48
42
23
44
39
46
45
22
8
41
24
25
32
28
43
38
26
52

7
ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION
ENGINE PLATE
1.. 575 608801 ....1 ....PLATE, ENGINE w/ DECAL
2.. 574 870901 ....1 ....BELT
3.. 532 175820 ....1 ....PULLEY, IDLER SECONDARY
4.. 574 811001 ....1 ....PULLEY, V 11/8 BORE
5.. 539 976688 ....1 ....PULLEY, IDLER
6.. 574 846402 ....1 ....PLATE, IDLER SUPPORT
7.. 525 435601 ....1 ....PIVOT, IDLER
8.. 510 206301 ....1 ....PIVOT, BEARING
9.. 510 041603 ....1 ....ARM, IDLER w/ BEARINGS
10.. 574 607001 ....1 ....CLUTCH, 200 FT-LB
11.. 539 101714 ....1 ....SOLENOID
12.. 575 017302 ....1 ....STOP, CLUTCH
13.. 532 424765 ....1 ....EXHAUST TUBE, RT
14.. 532 424766 ....1 ....EXHAUST TUBE, LT
15.. 539 131604 ....1 ....MUFFLER ASM TWIN
16.. 584 825501 ....1 ....HOSE, DRAIN
17.. 539 912757 ....1 ....KEY ¼ SQ x 1¼
18.. 522 599001 ....1 ....ADAPTER
19.. 539 104763 ....4 ....RETAINER, U TYPE
20.. 575 229902 ....1 ....BRACKET, MUFFLER, BLK
21.. 510 254401 ....1 ....SPRING, PUMP
22.. 539 114662 ....1 ....SHIELD, DUST
23.. 510 254501 ....2 ....SHIELD, DUST
24.. 539 102759 ....3 ....INSULATOR
25.. 539 101363 ....1 ....CLAMP
26.. 539 102757 ....1 ....CABLE
27.. 874 490632 ....1 ....HHFS 3/8-16 x 2
28.. 874 490512 . . 11 ....HHFS 5/16-18 x ¾
29.. 539 990209 ....2 ....HCS 5/16-18 x 1
30.. 581 332802 ....1 ....HCS 7/16-20 x 2
31.. 539 103433 ....1 ....HCS ½-13 x 3¼
32.. 539 990071 ....1 ....HCS ¼-20 x ½
33.. 539 976949 ....4 ....HCS 3/8-16 x 1¾
34.. 539 990302 ....2 ....SCREW ¼ x 3/8 THD FRM
35.. 539 130235 ....1 ....RHSNB 3/8-16 x 2¾
36.. 539 107271 ....2 ....RHSNB 5/16-18 x 1
37.. 539 100413 ....1 ....RHSNB 3/8-16 x 1¼
38.. 539 107475 ....2 ....BOLT 5/16-18 x ¾ THD FRM
39.. 521 991101 ....1 ....NUT ½-13 HEX FLG NYLOC
40.. 539 990613 ....1 ....NUT 3/8-16 HEX WHIZLK
41.. 539 200282 ....4 ....NUT 3/8-16 HEX JAM NYLOC
42.. 521 996501 ....2 ....NUT 3/8-16 HEX FLG NYLOC
43.. 539 112899 . . 15 ....NUT 5/16-18 HEX FLG NYLOC
44.. 539 108120 ....3 ....NUT ¼-20 HEX THIN NYLOC
45.. 539 115528 ....1 ....WASHER ½" BELLEVILLE
46.. 539 109554 ....2 ....WASHER ½ FLAT ZD
47.. 539 990247 ....1 ....WASHER 7/16 SLW
48.. 539 990118 ....1 ....WASHER 3/8 SPLT LK
49.. 539 990188 ....2 ....WASHER 5/16 SAE FLAT
50.. 539 990053 ....2 ....WASHER ¼ INT TOOTH LK
51.. 539 111897 ....1 ....WASHER, SPECIAL
52.. 539 109562 ....1 ....WASHER 3/8 x ¾
NOT SHOWN
575 018301 ...1 .... PIGTAIL

8
STEERING
14
7
5
4
2
13
8
13
15
21
19
6
16
20
17
9
22
24
18
23
23
10
12
11
30
28
27
27
27
30
30
29
27
29
30
25
18
18
26

9
ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION
STEERING
1.. 539 132009 ....1 ....LEVER w/ GRIP RT
2.. 539 132010 ....1 ....LEVER w/ GRIP LT
3.. 539 130894 ....2 ....GRIP, FOAM
4.. 577 251701 ....2 ....BRACKET, CONTROL
5.. 539 131518 ....4 ....BEARING, FLANGE
6.. 576 140301 ....2 ....LEVER, CONTROL
7.. 577 420001 ....2 ....LEVER, HANDLE
8.. 577 252401 ....2 ....SPACER, PIVOT CONTROL
9.. 539 102720 ....2 ....DAMPENER
10.. 581 437501 ...2 ....BLOCK, TRACKING
11.. 539 102845 ....1 ....SPRING
12.. 576 850301 ....1 ....SPRING
13.. 539 131799 ....1 ....KNOB
14.. 574 811401 ....2 ....ROD, MOTION CONTROL
15.. 539 116689 ....2 ....COUPLER, ROD END
16.. 539 116690 ....2 ....ROD END LT
17.. 539 115729 ....2 ....ROD END RT
18.. 539 990627 ....5 ....HCS 5/16-18 x 1¼
19.. 874 780844 ....2 ....HCS ½-13 x 2¾
20.. 539 976935 ....4 ....HCS 5/16-18 x 1½
21.. 576 850402 ....2 ....SCREW 5/16-18 X 1¾ BTN HD
22.. 874 490512 ....8 ....HHFS 5/16-18 X ¾
23.. 525 544001 ....4 ....HHFS 5/16-18 x 1¼ TPBLT
24.. 539 990223 ....4 ....NUT 5/16-24 HEX
25.. 539 108010 ....2 ....NUT ½-13 HEX JAM NYL GR2
26.. 539 991073 ....2 ....NUT 5/16-24 HEX JAM LH
27.. 539 112899 . . 10 ....NUT 5/16-18 HEX FLG NYLOC
28.. 539 990717 ....6 ....NUT 5/16-18 HEX NYLOC
29.. 539 990585 ....4 ....NUT 5/16-18 HEX WHIZLK
30.. 819 111116 . . 12 ....WASHER 5/16 SAE FLT

10
IGNITION
3
4
11
10
13
45
17
19
21
22
44
24
25
15
37
42
41
38
26
30 8
2
1
34
20 23
16
45
43
9
14
5
6
27
28
29
36
39
35
41
41
40
7
18
33
32
31
19
12