Husqvarna MZ25 / 968999780 User manual

English
Parts Manual
MZ25 / 968999780 MZ5226 / 965879901
MZD52 / 968999781 MZD61 / 968999782
Please read the operator’s manual carefully and make sure
you understand the instructions before using the machine.

MODEL
I.D.
SERIALNO
401N CO MMERCE STREET
BEATRICENE 68310U.S.A.
MADEIN U. S.A.
©2010 HTC. All rights reserved.
Beatrice, NE. Printed in U.S.A.
The machine’s manufacturing
number can be found on the
printed plate affixed to the engine
compartment. Illustration at left
shown with engine removed.
When you need spare parts or support in service
questions, warranty issues, etc., please consult
the following professional:
Manufacturing Number
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.
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 afxed at the rear.
This Parts Manual belongs to the machine with the
manufacturing number:
Engine Transmission

CONTENTS
NOTE: ALL FASTENERS ARE GRADE 5 UNLESS OTHERWISE SPECIFIED.
FRAME ..................................................................... 4
ENGINE PLATE
968999780 ......................................................... 6
965879901 ......................................................... 8
STEERING ............................................................. 10
IGNITION SYSTEM ................................................ 12
PARKING BRAKE .................................................. 14
HYDRAULIC PUMP-MOTOR ................................. 16
WHEELS AND TIRES ............................................ 18
MOWER LIFT / DECK LIFT .................................... 22
MOWING DECK / CUTTING DECK
MZD52 / 965999781 ........................................ 24
MZD61 / 965999782 ........................................ 26
SEAT ...................................................................... 28
DECALS ................................................................. 30

4
FRAME
7
2
1
25
4
3
19
9
6
21
27
20
17
10
12
5
28
23
7
8
11
11
13
17
18
22
16
15
33
32
31
24
29
26
8
30
34
17
14

5
ITEM PARTNO. QTY. DESCRIPTION ITEM PARTNO. QTY. DESCRIPTION
FRAME
539 1315941.. ....1 ....GUARD, REAR
539 1316922.. ....2 ....MOUNT, TANK, REAR
539 1317513.. ....2 ....SUPPORT, TOP
539 2006844.. ..12 ....RIVET 3/16 STAVEX
539 1081205.. ....6 ....NUT ¼-20 HEX THIN NYLOC
539 1317536.. ....2 ....PANEL, HEX, RR
539 1128997.. ..15 ....NUT 5/16-18 FLANGE NYLOC
539 1317808.. ....8 ....SCREW, HX FLG 5/16-18 x 3¾
539 1117779.. ....6 ....RHSSNB ¼-20 x ½
539 97697810.. ....4 ....NUT ¼-20 HEX NYLOC
539 11178611.. ....4 ....RHSSNB ¼-20 x 5/8
539 99031612.. ....4 ....BOLT, RD HD 5/16-18 x ¾
539 99071713.. ....4 ....NUT 5/16-18 HEX NYLOC
505 25640114.. ....2 ....STOP, DECK
539 13153715.. ....1 ....MOUNT, BATTERY
539 97777816.. ....2 ....ABRASIVE PAD
539 10747517.. ..16 ....BOLT 5/16-18 x ¾ THD FRM
539 10476318.. ..12 ....RETAINER, U TYPE
539 20028219.. ....6 ....NUT 3/8-16 HEX JAM NYLOC
539 13178120.. ....2 ....SCREW, HX FLG 3/8-16 x 2¾
539 97697921.. ....2 ....NUT 3/8-16 HEX NYLOC
539 10441122.. ....1 ....KNOB w/ STUD
539 99013423.. ....2 ....BOLT, HEX 3/8-16 x ¾
539 10258724.. ....7 ....GROMMET, BUMPER
539 12132225.. ....2 ....FOOT PAD
539 99020826.. ....3 ....BOLT, RD HD 5/16-18 x 1
539 13157927.. ....1 ....SIDE, RT
539 13238028.. ....1 ....PLATE, FOOTREST
539 13274429.. ....1 ....PLATE, FLOOR w/ DECALS
539 13274330.. ....1 ....FRAME w/ DECALS
Serial # prior to 095106013
575 725301 ....1 .... FRAME w/ DECALS
Serial # 095106013 and after
539 13158931.. ....1 ....PANEL, FILLER, LT
539 13157732.. ....1 ....SIDE, LT
539 13159133.. ....1 ....PANEL, FILLER, RT
539 13300634.. ....4 ....SCREW, HX FLG 3/8-16 x 2½

6
ENGINE PLATE
1
26
27
19
21
18
22
36
38
22
20
11
31
25
Torque to 50 ft/lbs
24
51
14
23 21 15
5
23
13
12
9
7
10
4
6
29
28
16
17
26
27
33
37 35
34
8
39
40
41
42
44
45
46
47
48
49
27
50
52
32
30
50
43
968999780
47
53

7
ITEM PARTNO. QTY. DESCRIPTION ITEM PARTNO. QTY. DESCRIPTION
ENGINE PLATE
539 1317261.. ....1 ....PLATE, ENGINE
539 1012312.. ....1 ....IDLER SPINDLE
539 1103113.. ....1 ....IDLER PULLEY
539 1120924.. ....1 ....IDLER ARM WLDMT
539 1083465.. ....1 ....BOLT, HEX ½-13 x 2½
539 1013316.. ....1 ....NUT ½ HEX NYLOC
539 9906927.. ....1 ....WASHER 5/16 STD FLT
539 9905508.. ....1 ....WASHER ½ STD FLT
539 1019779.. ....1 ....TRACTION SPRING
539 97697910.. ....3 ....NUT 3/8-16 HEX NYLOC
539 11012211.. ....1 ....BOLT, HEX 3/8-16 x 2½ TPBLT
539 99061312.. ....1 ....NUT 3/8-16 HEX WHIZLK
539 10261213.. ....1 ....BOLT, HEX 3/8-16 x 2¾
539 10963914.. ....1 ....PULLEY
539 13172815.. ....1 ....TIE DOWN, CLUTCH
539 13172916.. ....1 ....DRAIN, OIL
539 10721017.. ....1 ....GROMMET
539 10136418.. ....1 ....PLUG-OIL
539 10171419.. ....1 ....SOLENOID
539 99007420.. ....2 ....BOLT, RD HD ¼-20 x ¾ GR2
539 97697821.. ....6 ....NUT ¼-20 HEX NYLOC
539 10812022.. ....3 ....NUT ¼-20 HEX THIN NYLOC
532 12061623.. ....4 ....BOLT 3/8-16 x 1 THD FRM
539 99024724.. ....1 ....WASH 7/16 SLW
539 99112025.. ....1 ....BOLT, HEX 7/16-20 x 2½
539 99020926.. ....5 ....BOLT, HEX 5/16-18 x 1
539 11289927.. ....7 ....NUT 5/16-18 FLANGE NYLOC
539 10136328.. ....2 ....CLAMP
539 99007129.. ....2 ....BOLT, HEX ¼-20 x ½
539 91275730.. ....1 ....KEY ¼ SQ x 1¼
539 99054631.. ....1 ....NUT 3/8-16 HEX CNTRLK
539 99030232.. ....2 ....SCREW ¼-20 x 3/8 THD FRM
539 10709833.. ....2 ....CLAMP
539 91632534.. ....1 ....FUEL VALVE
539 91222235.. ....4 ....HOSE CLAMP
539 10538236.. ....1 ....FUEL LINE-30"
539 10821237.. ....1 ....FUEL LINE-13"
539 10275938.. ....3 ....INSULATOR
539 99005339.. ....1 ....WASHER ¼ INT TOOTH LK
521 97500240.. ....1 ....MANIFOLD, FT
521 97500141.. ....1 ....MANIFOLD, RR
539 13160442.. ....1 ....MUFFLER ASM TWIN
539 11567543.. ....1 ....WASHER
539 13176944.. ....1 ....GUARD, MUFFLER
539 13177145.. ....1 ....MOUNT, MUFFLER
539 10476346.. ....4 ....RETAINER, U TYPE
539 10747547.. ....6 ....BOLT 5/16-18 x ¾ THD FRM
539 99031648.. ....2 ....BOLT, RD HD 5/16-18 x ¾
539 99030249.. ....2 ....SCREW ¼-20 x 3/8 THD FRM
539 97693450.. ....4 ....BOLT, HEX 5/16-18 x ¾
539 13273351.. ....1 ....CLUTCH
539 13241252.. ....1 ....CABLE, POSITIVE
539 13175853.. ....1 ....SHIELD, HEAT
NOT SHOWN
539 107516 ....1 .... PIGTAIL

8
ENGINE PLATE
965879901
1
19
21
18
22
38
20
11
31
25
Torque to 50 ft/lbs
24
52
14
23 21 15
5
23
13
12
9
7
10
4
6
29
28
16
17
26
27
33
37
3534
8
39
40
41
42
43
44
45
47
48
49
27
51
53
32
30
51
36
46
50
54
55

9
ITEM PARTNO. QTY. DESCRIPTION ITEM PARTNO. QTY. DESCRIPTION
ENGINE PLATE
539 1317261.. ....1 ....PLATE, ENGINE
539 1012312.. ....1 ....IDLER SPINDLE
539 1103113.. ....1 ....IDLER PULLEY
539 1120924.. ....1 ....IDLER ARM WLDMT
539 1083465.. ....1 ....BOLT, HEX ½-13 x 2½
539 1013316.. ....1 ....NUT ½ HEX NYLOC
539 9906927.. ....1 ....WASHER 5/16 STD FLT
539 9905508.. ....1 ....WASHER ½ STD FLT
539 1019779.. ....1 ....TRACTION SPRING
539 97697910.. ....3 ....NUT 3/8-16 HEX NYLOC
539 11012211.. ....1 ....BOLT, HEX 3/8-16 x 2½ TPBLT
539 99061312.. ....1 ....NUT 3/8-16 HEX WHIZLK
539 10261213.. ....1 ....BOLT, HEX 3/8-16 x 2¾
539 10963914.. ....1 ....PULLEY
539 13172815.. ....1 ....TIE DOWN, CLUTCH
539 13172916.. ....1 ....DRAIN, OIL
539 10721017.. ....1 ....GROMMET
539 10136418.. ....1 ....PLUG-OIL
539 10171419.. ....1 ....SOLENOID
539 99007420.. ....2 ....BOLT, RD HD ¼-20 x ¾ GR2
539 97697821.. ....6 ....NUT ¼-20 HEX NYLOC
539 10812022.. ....2 ....NUT ¼-20 HEX THIN NYLOC
532 12061623.. ....3 ....BOLT 3/8-16 x 1 THD FRM
539 99024724.. ....1 ....WASH 7/16 SLW
539 99112025.. ....1 ....BOLT, HEX 7/16-20 x 2½
539 99020926.. ....4 ....BOLT, HEX 5/16-18 x 1
539 11289927.. ....6 ....NUT 5/16-18 FLANGE NYLOC
539 10136328.. ....2 ....CLAMP
539 99007129.. ....2 ....BOLT, HEX ¼-20 x ½
539 91275730.. ....1 ....KEY ¼ SQ x 1¼
539 99054631.. ....1 ....NUT 3/8-16 HEX CNTRLK
539 99030232.. ....2 ....SCREW ¼-20 x 3/8 THD FRM
539 99066933.. ....1 ....BOLT, HEX 5/16-18 x 1¾
539 91632534.. ....1 ....FUEL VALVE
539 91222235.. ....4 ....HOSE CLAMP
539 11567536.. ....1 ....WASHER
539 10821237.. ....1 ....FUEL LINE-13"
539 10275938.. ....3 ....INSULATOR
539 99005339.. ....1 ....WASHER ¼ INT TOOTH LK
539 13173940.. ....1 ....MANIFOLD, FT
539 13174041.. ....1 ....MANIFOLD, RR
539 13160442.. ....1 ....MUFFLER ASM TWIN
539 13175843.. ....1 ....SHIELD, HEAT
539 13176944.. ....1 ....GUARD, MUFFLER
539 13177145.. ....1 ....MOUNT, MUFFLER
539 10476346.. ....4 ....RETAINER, U TYPE
539 10747547.. ....6 ....BOLT 5/16-18 x ¾ THD FRM
539 99031648.. ....2 ....BOLT, RD HD 5/16-18 x ¾
539 99030249.. ....2 ....SCREW ¼-20 x 3/8 THD FRM
539 11579950.. ....1 ....CABLE, GROUND
539 97693451.. ....4 ....BOLT, HEX 5/16-18 x ¾
539 13273252.. ....1 ....CLUTCH
539 13241253.. ....1 ....CABLE, POSITIVE
539 10538254.. ....1 ....FUEL LINE
539 10709855.. ....2 ....CLAMP
NOT SHOWN
539 107516 ....1 .... PIGTAIL

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