Husqvarna M-ZT 52 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
M-ZT52 / 967177001
Please read the operator’s manual carefully and make sure
you understand the instructions before using the machine.

©2012 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
Mulch Kit ..........................................965 894001

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
MULCH KIT ...................................................... 26

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

5
ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION
FRAME
1.. 577 256802 ....1 ....PANEL, FILLER LT ORG
2.. 577 256902 ....1 ....PANEL, FILLER RT ORG
3.. 575 017202 ....1 ....PLATE, BATTERY ORG
4.. 539 132744 ....1 ....PLATE w/ SAFTY DECAL ORG
5.. 539 132380 ....1 ....PLATE, FOOTREST ORG
6.. 539 102587 ....7 ....GROMMET, BUMPER
7.. 575 348402 ....1 ....GUARD, REAR
8.. 521 921801 ....1 ....GUARD, SKID
9.. 539 104411 ....1 ....KNOB w/ STUD
10.. 539 977778 ....2 ....PAD, ABRASIVE LG
11.. 539 121322 ....2 ....PAD, ABRASIVE SM
12.. 577 259801 ....1 ....SIDE, LT BLK
13.. 577 259701 ....1 ....SIDE, RT BLK
14.. 505 256401 ....2 ....STOP, DECK
15.. 575 533602 ....2 ....MOUNT, TANK BLK
16.. 575 245202 ....2 ....BRACKET, DAMPENER BLK
17.. 539 104763 ....8 ....RETAINER-U TYPE
18.. 539 102335 ....2 ....HCS 5/16-18 x 4
19.. 525 464701 . . 16 ....HHFS 5/16-18 x ¾
20.. 539 131781 ....5 ....HHFS 3/8-16 x 2¾
21.. 539 131780 ....4 ....HHFS 5/16-18 x 3¾
22.. 539 990316 ....6 ....RHSNB 5/16-18 x ¾
23.. 539 109117 ....2 ....RHSNB 3/8-16 x ¾
24.. 539 990208 ....3 ....RHSNB 5/16-18 x 1
25.. 539 200282 ....5 ....NUT 3/8-16 HEX JAM NYLOC
26.. 539 112899 . . 17 ....NUT 5/16-18 HEX FLG NYLOC
27.. 521 996501 ....2 ....NUT 3/8-16 HEX FLG NYLOC
28.. 539 990188 ....2 ....WASHER 5/16 SAE FLT
29.. 539 109554 ....1 ....WASHER ½ FLT

6
ENGINE PLATE
1
27
18
38
11
30
14
15
5
2
3
17
12
9
7
10
4
6
29
16
17
37
44
839
40
37
42
45
36
32
22
13
21
26
24
31
43
19
28
20
23
46
44
25
34
39
39
47
33
25
35
41
41
48
38

7
ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION
ENGINE PLATE
1.. 574 846302 ....1 ....PLATE, ENGINE, BLK
2.. 574 846402 ....1 ....PLATE, IDLER SUPPORT, BLK
3.. 574 811001 ....1 ....PULLEY, V, 1.125 BORE
4.. 539 976688 ....1 ....PULLEY, IDLER
5.. 539 107620 ....1 ....PULLEY, IDLER SECONDARY
6.. 574 870901 ....1 ....BELT
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.. 575 017302 ....1 ....STOP, CLUTCH BLK
12.. 539 101364 ....1 ....PLUG, OIL
13.. 576 701801 ....1 ....MUFFLER, B&S CYCLONIC
14.. 539 101714 ....1 ....SOLENOID
15.. 510 254401 ....1 ....SPRING, PUMP
16.. 539 114662 ....1 ....SHIELD, DUST
17.. 510 254501 ....2 ....SHIELD, DUST
18.. 539 101362 ....1 ....HOSE, DRAIN
19.. 579150901 ....1 ....SHIELD, MUFFLER
20.. 539 102759 ....3 ....INSULATOR
21.. 539 101363 ....1 ....CLAMP
22.. 539 912757 ....1 ....KEY ¼ SQ x 1¼
23.. 539 104763 ....4 ....RETAINER, U TYPE
24.. 525 866201 ....1 ....HHFS 3/8-16 x 2
25.. 525 464701 . . 11 ....HHFS 5/16-18 x ¾
26.. 532 120616 ....4 ....HHFS 3/8-16 x 1 THD FRM
27.. 539 990302 ....2 ....SCREW ¼-20 x 8 THD FRM
28.. 532 183906 ....4 ....SCREW 5/16-18 x 1 SKT HD
29.. 539 107271 ....2 ....RHSSNB 5/16-18 x 1
30.. 539 100413 ....1 ....RHSNB 3/8-16 x 1¼
31.. 539 130235 ....1 ....RHSNB 3/8-16 x 2¾
32.. 539 991120 ....1 ....HCS 7/16-20 x 2½
33.. 539 990209 ....2 ....HCS 5/16-18 x 1
34.. 539 103433 ....1 ....HCS ½-13 x 3¼
35.. 539 990071 ....1 ....HCS ¼-20 x ½
36.. 521 991101 ....1 ....NUT ½-13 HEX FLANGE NYL
37.. 539 200282 ....4 ....NUT 3/8-16 HEX JAM NYLOC
38.. 521 996501 ....2 ....NUT 3/8-16 HEX FLANGE NYL
39.. 539 108120 ....4 ....NUT ¼-20 HEX THIN
40.. 539 990613 ....1 ....NUT 3/8-16 HEX WHIZLK
41.. 539 112899 . . 15 ....NUT 5/16-18 HEX FLANGE NYL
42.. 539 109562 ....1 ....WASHER 3/8 x ¾
43.. 539 990188 ....2 ....WASHER 5/16 SAE FLAT
44.. 539 109554 ....2 ....WASHER ½ FLAT ZD
45.. 539 990247 ....1 ....WASHER 7/16 SLW
46.. 539 990053 ....2 ....WASHER ¼ INT TOOTH LK
47.. 539 111897 ....1 ....WASHER, SPECIAL
48.. 539 115528 ....1 ....WASHER ½" BELLEVILLE
NOT SHOWN
539 107516 ...1 .... PIGTAIL CV490S
532 165391 ...1 .... GASKET, MUFFLER

8
STEERING
14
7
5
4
2
13
8
13
15
21
19
6
16
20
17
9
22
24
18
23
10
12
11
30
28
27
27
27
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.. 577 251801 ...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.. 539 101332 ....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.. 525 464701 ....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.. 539 990188 . . 12 ....WASHER 5/16 SAE FLT

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