Husqvarna RZ4216/966455801 User manual

Parts Manual
RZ4216 / 966455801
Please read the operator’s manual carefully and make sure you
understand the instructions before using the machine.

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 afxed 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.
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.
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
©2009 HTC. All rights reserved.
Beatrice, NE. Printed in U.S.A.

CONTENTS
NOTE: ALL FASTENERS ARE GRADE 5 UNLESS OTHERWISE SPECIFIED.
CHASSIS / FRAME .................................................. 4
ENGINE PLATE........................................................ 6
STEERING ............................................................... 8
IGNITION................................................................ 10
HYDRAULIC PUMP / MOTOR ............................... 12
WHEELS / TIRES................................................... 14
BRAKE / DECK LIFT.............................................. 16
MOWER DECK / CUTTING DECK ........................ 18
SEAT ...................................................................... 20
DECALS ................................................................. 22

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

ITEM PARTNO. QTY. DESCRIPTION ITEM PARTNO. QTY. DESCRIPTION
5
FRAME
525 4547021.. ....1 .... FRAME TUBE, LH
525 4549022.. ....1 .... FRAME TUBE, RH
574 3564023.. ....1 .... SEAT SUPPORT, REAR
532 1951614.. ....2 .... STUD w/ ANTI-ROTATE
539 9903625.. ....6 .... SCREW ¼-20 x 5/8 SLF TAP
525 8645026.. ....1 .... BRACKET, FUEL TANK
539 9769417.. ....2 .... HCS 3/8-16 x 1¼
539 1128998.. ..14 .... NUT 5/16-18 FLANGE NYLOC
539 9901889.. ..12 .... WASHER 5/16 SAE FLAT
539 97693810.. ....4 .... HCS 5/16-18 x 2¼
539 99012211.. ....8 .... WASHER 3/8 SAE FLT
539 20028212.. ....8 .... NUT 3/8-16 HEX JAM NYLOC
539 11197613.. ....4 .... BOLT 3/8-16 x 25/8 THD FRM
521 99650114.. ..14 .... NUT 3/8-16 FLANGE NYLOC
539 99064515.. ....2 .... RHSNB 3/8-16 x 1
574 35470216.. ....1 .... GUARD, REAR
539 11178517.. ....6 .... RHSNB 3/8-16 x ¾
539 99062918.. ....8 .... HCS 3/8-16 x 2¼
539 97698919.. ....2 .... HAIRPIN
539 97698220.. ....2 .... WASHER 5/8 SAE FLT
574 35600221.. ....1 .... FOOT REST
539 10258722.. ....8 .... GROMMET, BUMPER
575 66130223.. ....1 .... PANEL, SEAT SUPPORT
539 10476324.. ....4 .... U TYPE RETAINER
574 35620225.. ....1 .... FOOT PLATE
539 10172126.. ....2 .... HCS 5/16-18 x 2¾
539 99058527.. ....4 .... NUT 5/16-18 HEX WHIZLK
539 11908728.. ....2 .... BUSHING
539 99071729.. ....6 .... NUT 5/16-18 HEX NYLOC
539 97693730.. ....2 .... HCS 5/16-18 x 2
539 12263231.. ....2 .... SPRING, SEAT
539 11988432.. ....2 .... CAP, SPRING
525 81380233.. ....1 .... PLATE, RH
525 81390234.. ....1 .... PLATE, LH
574 17290135.. ....2 .... GUIDE, BELT
539 99031636.. ....2 .... RHSNB 5/16-18 x ¾
539 97693437.. ....4 .... HCS 5/16-18 x ¾
525 79840238.. ....1 .... SUPPORT, TANK
525 60550239.. ....1 .... BRACKET, FRONT DECK

6
ENGINE PLATE
16
Torque to
55-75 ft-lbs
1
2
3
4
5
7
8
9
10
11
12
13
14
15
17
18
19
20
6
7
2
7

ITEM PARTNO. QTY. DESCRIPTION ITEM PARTNO. QTY. DESCRIPTION
7
ENGINE PLATE
532 1206161.. ....3 .... HHFS 3/8-16 x 1 THD FRM
539 1128992.. ....2 .... NUT 5/16-18 FLANGE NYLOC
539 9769373.. ....1 .... HCS 5/16-18 x 2
539 9905884.. ....1 .... HCS 3/8-16 x 2
539 9901885.. ....2 .... WASHER 5/16 SAE FLAT
539 9170336.. ....1 .... KEY ¼ SQ x 2½ LG
539 9905177.. ....3 .... WASHER 3/8 FLAT STD
539 1143878.. ....1 .... SPACER
539 2002829.. ....1 .... NUT 3/8-16 HEX JAM NYLOC
539 12081210.. ....1 .... PULLEY, IDLER
539 11527011.. ....1 .... BUSHING, METAL
574 35580212.. ....1 .... PLATE, ENGINE
539 97693813.. ....1 .... HCS 5/16-18 x 2¼
539 11635014.. ....1 .... SPRING 3½
574 49750415.. ....1 .... IDLER ARM
539 92338816.. ....1 .... HCS 7/16-20 x 3
539 11554617.. ....1 .... WASHER
574 382001 18.. ...1 .... PULLEY, ENGINE
539 99058519.. ....1 .... NUT 5/16-18 HEX WHIZLK
539 97697920.. ....3 .... NUT 3/8-16 HEX NYLOC

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

ITEM PARTNO. QTY. DESCRIPTION ITEM PARTNO. QTY. DESCRIPTION
9
STEERING
539 1208991.. ....2 .... GRIP
539 1201602.. ....2 .... LEVER, UPPER
539 1179493.. ....1 .... STOP, STEER CNTRL RH
539 1179504.. ....1 .... STOP, STEER CNTRL LH
539 1209845.. ....1 .... PIVOT, RH
539 1209836.. ....1 .... PIVOT, LH
539 1144537.. ....2 .... DAMPENER
539 1201598.. ....1 .... LOWER LEVER, RH
539 1201629.. ....1 .... LOWER LEVER, LH
539 97693510.. ....4 .... HCS 5/16-18 x 1½
539 10133211.. ....2 .... HCS ½-13 x 2¾
539 99025012.. ....6 .... WASHER ½ SAE
539 91112113.. ....4 .... WASHER 5/8 BELLEVILLE
539 99020914.. ....2 .... HCS 5/16-18 x 1
539 99031615.. ....2 .... RHSNB 5/16-18 x ¾
539 10839616.. ....2 .... BOLT, HEX 5/16-18 x 2½ TPBLT
539 99019617.. ....2 .... NUT, 5/16-18 HEX
539 11563818.. ....2 .... ZERK
539 12095619.. ....2 .... BUSHING ½ ID x ¾ OD
539 99058520.. ....2 .... NUT 5/16-18 HEX WHIZLK
539 99071721.. ....6 .... NUT 5/16-18 HEX NYLOC
539 10801022.. ....2 .... NUT ½-13 JAM NYLOC GR 2
539 11557023.. ....2 .... WASHER, SPECIAL
539 11034024.. ....2 .... NUT 5/8-11 NYLOC
539 99100325.. ....2 .... HCS ¼-20 x 1¾
539 99111226.. ....2 .... NUT ¼-20 JAM

10
IGNITION
1
2
3
4
5
7
8
9
10
11
12
13
14
15
1617
18
19
20
21
22
23
24
25
26
6
28 29
30
31
32
33
34
27
23 26
24 25
3
35

ITEM PARTNO. QTY. DESCRIPTION ITEM PARTNO. QTY. DESCRIPTION
11
IGNITION
525 5947011.. ....1 .... FENDER, RH
525 5947022.. ....1 .... FENDER, LH
539 1010803.. ....4 .... SWITCH
539 1017144.. ....1 .... SOLENOID
539 1024365.. ....1 .... BATTERY
539 1075416.. ....1 .... SWITCH, IGNITION
539 1076287.. ....1 .... BATTERY HOLD DOWN
539 1076298.. ....2 .... NUT ¼ PUSH NYLON
539 1075449.. ....1 .... KEY, IGNITION
525 59860110.. ....1 .... PANEL, CONTROLS
522 73010111.. ....1 .... CABLE, THROTTLE
575 66150112.. ....1 .... CLUTCH ASSY w/ CABLE
539 11640013.. ....3 .... TERMINAL COVER, SM
539 12019514.. ....1 .... TANK, FUEL
539 13039315.. ....1 .... CAP, FUEL
539 12480416.. ....1 .... ELBOW w/ FILTER
539 12621717.. ....1 .... FITTING, TANK
539 91632518.. ....1 .... VALVE, FUEL
539 91222219.. ....4 .... CLAMP, HOSE
539 11573620.. ....1 .... HOSE ¼ x 8
539 12148621.. ....1 .... HOSE, ¼ x 2
539 99058022.. ....2 .... HCS ¼-20 x ¾
539 99005523.. ....4 .... WASHER ¼ FLAT SAE
539 97695224.. ....8 .... SCREW #10-24 x 5/8
539 97697725.. ....8 .... NUT #10-24 HEX NYLOC
539 97697826.. ....4 .... NUT ¼-20 HEX NYLOC
539 10812027.. ....1 .... NUT ¼-20 HEX THIN NYLOC
539 99031628.. ....2 .... RHSNB 5/16-18 x ¾
539 11289929.. ....2 .... NUT 5/16-18 FLANGE NYLOC
539 10763230.. ....2 .... BOLT ¼ x 7½
539 99007431.. ....2 .... RHSNB ¼-20 x ¾ GR2
539 11006832.. ....1 .... BATTERY CABLE, NEGATIVE
539 99036233.. ....9 .... SCREW ¼-20 x 5/8 SLF TAP
539 13262434.. ....1 .... KNOB, CLUTCH
532 19323535.. ....1 .... CABLE, CLUTCH
NOT SHOWN
539 104974 ...1 .... CABLE, POSITIVE
539 103306 ...1 .... CABLE, POSITIVE LONG
574 658201 ...1 .... WIRING HARNESS
539 110290 ...2 .... FOAM STRIP, TANK

12
1
2
3
4
5
7
8
9
10
11
12
13
14
15
16
17
18
19
20
6
13
1
13
4
6
HYDRAULIC PUMP / MOTOR

ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION
13
539 1128991.. .. 10 .... NUT 5/16-18 FLANGE NYLOC
539 1201522.. .... 1 .... HYDRO, RH
539 1201533.. .... 1 .... HYDRO, LH
539 9906294.. .... 4 .... HCS 3/8-16 x 2¼
574 3565015.. .... 2 .... SPACER, HYDRO
539 9905176.. .... 4 .... WASHER 3/8FLAT STD
539 1157297.. .... 2 .... ROD END, RH
539 1166908.. .... 2 .... ROD END, MALE LH
539 1155029.. .... 4 .... NUT 5/16-24 HEX JAM
539 12016910.. .... 2 .... ROD, CONTROL
539 11668911.. .... 2 .... ROD END COUPLER
539 99107312.. .... 2 .... NUT 5/16-24 HEX JAM LH
539 99018813.. .. 10 .... WASHER 5/16 SAE FLAT
539 10172114.. .... 4 .... HCS 5/16-18 x 2¾
575 85240115.. .... 1 .... BELT, EZT
539 12015616.. .... 1 .... RELEASE HANDLE, LH
539 12015717.. .... 1 .... RELEASE HANDLE, RH
539 97698818.. .... 2 .... HAIRPIN COTTER
539 97693819.. .... 2 .... HCS 5/16-18 x 2¼
539 99020920.. .... 4 .... HCS 5/16-18 x 1
HYDRAULIC PUMP / MOTOR

14
WHEELS / TIRES
1
7
8
9
10
11
12
13
14
15
16
17 18 19
20
21
22
34 56 2
23244

ITEM PARTNO. QTY. DESCRIPTION ITEM PARTNO. QTY. DESCRIPTION
15
WHEELS / TIRES
539 1103331.. ....2 .... CASTER TIRE ASSY
539 1033002.. ....2 .... ZERK
539 1024843.. ....4 .... BEARING, FLANGED
539 9122344.. ....4 .... VALVE
539 1069945.. ....2 .... RIM
539 1069956.. ....2 .... TIRE
539 1156387.. ....2 .... ZERK
539 1157478.. ....2 .... SPRING, CASTER
539 1179019.. ....2 .... BUSHING, CASTER
539 11567510.. ....2 .... WASHER
539 10253511.. ....2 .... CAP, GREASE
539 11574912.. ....2 .... PLUG, CASTER
539 11266013.. ....2 .... BEARING, FLANGED
539 11556614.. ....2 .... HHB 5/16-18 x 1 NYLOC
539 10554315.. ....2 .... SPACER
539 12115916.. ....2 .... RHSNB ½-13 x 6½
539 10133117.. ....2 .... NUT ½ HEX NYLOC
539 10955418.. ....2 .... WASHER ½ FLAT
510 18650119.. ....2 .... YOKE, CASTER
539 11480520.. ....4 .... SPACER 5/16
574 38370121.. ....2 .... WHEEL ASSY REAR
539 10117322.. ....8 .... NUT ½ LUG
539 11755523.. ....2 .... TIRE 4 PLY 18 x 7.5 x 8
574 38360124.. ....2 .... RIM

16
BRAKE / DECK LIFT
1
2
3
4
5
7
8
9
10 11
12
13
14
15
16
17
18
19
20
21
22
23
24
25 26
6
16
9
1011
27

ITEM PARTNO. QTY. DESCRIPTION ITEM PARTNO. QTY. DESCRIPTION
17
BRAKE / DECK LIFT
525 5804021.. ....1 .... HANDLE, LIFT
574 3568022.. ....1 .... SHAFT, LIFT
525 5802013.. ....2 .... BELLCRANK, BRAKE
574 3566014.. ....1 .... ROD, BRAKE
539 1093685.. ....2 .... BUSHING, PLASTIC
539 9910346.. ....2 .... SCREW 10-24 x 5/8" WSH HD
539 1181797.. ....2 .... SWIVEL
539 1152478.. ....2 .... L-ROD 31/8"
539 9769799.. ....3 .... NUT 3/8-16 HEX NYLOC
539 99051710.. ....7 .... WASHER 3/8 FLAT STD
539 97698911.. ....6 .... HAIRPIN
539 11230812.. ....2 .... SWIVEL, BRAKE
539 10108213.. ....2 .... ROLL PIN 3/16"
525 73570114.. ....1 .... LINKAGE, UPPER
539 10122415.. ....2 .... SPRING
539 99018816.. ....6 .... WASHER 5/16 SAE FLAT
539 99071717.. ....2 .... NUT 5/16-18 HEX NYLOC
539 97698818.. ....4 .... HAIRPIN COTTER
525 58360119.. ....1 .... LINKAGE, BRAKE RT
525 58370120.. ....1 .... LINKAGE, BRAKE LT
539 12022021.. ....1 .... PIVOT, BRAKE ARM
525 48560222.. ....1 .... HANDLE, BRAKE
539 10041323.. ....1 .... RHSNB 3/8-16 x 1¼
539 12092124.. ....1 .... GRIP, BRAKE HANDLE
539 10284325.. ....1 .... WASHER 7/16 SPRING DISK
539 13300726.. ....1 .... WASHER, .825
532 19649227.. ....1 .... GRIP, LIFT HANDLE

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

ITEM PARTNO. QTY. DESCRIPTION ITEM PARTNO. QTY. DESCRIPTION
19
MOWER DECK / CUTTING DECK
575 6998011.. ....1 .... DECK w/ SAFETY DECALS
532 1951852.. ....2 .... SUSPENSION ARM, REAR
532 1930033.. ....2 .... BOLT, WASHER
539 107518
4.. ....2 .... STRIPPER, ROUND
777 1341495.. ....2 .... BLADE 42"
539 1076306.. ....8 .... SCREW, WASHER HEAD
539 1104637.. ....1 .... BAFFLE, DECK
539 9907998.. ....7 .... RHSNB 5/16-18 x 5/8
532 1925579.. ....1 .... BRACKET, DEFLECTOR
539 11289910.. ....8 .... NUT 5/16-18 HEX FLG NYL
532 19287011.. ....2 .... MANDREL
532 193108
12.. ....1 .... SHIELD, DEFLECTOR
532 19594513.. ....2 .... PULLEY, MANDREL
539 107520
14.. ....2 .... WASHER-SPACER
539 10759015.. ....2 .... NUT 9/16 TOP CNTRLK
539 11046216.. ....1 .... ROD, HINGE
539 110328
17.. ....1 .... SPRING, TORSION
539 107627
18.. ....1 .... CAP, SLEEVE
539 10762619.. ....1 .... PUSHNUT
539 919078
20.. ....2 .... PULLEY, IDLER
539 110316
21.. ....1 .... PULLEY, IDLER
574 694502
22.. ....1 .... ARM, IDLER
529 311801
23.. ....2 .... ARM, LH BRAKE
539 11362124.. ....2 .... BOLT 3/8-16 x 3/8 SKT HD
539 20028225.. ....3 .... NUT 3/8-16 HEX JAM NYLOC
539 41640526.. ....1 .... QUICK CONNECT
532 19909227.. ....2 .... SPACER RETAINER
539 99056328.. ....2 .... HCS 3/8-16 x 1
521 99650129.. ....2 .... NUT 3/8-16 HEX FLG NYLOC
574 69330230.. ....1 .... ARM, BRAKE
539 99012231.. ....4 .... WASHER 3/8 SAE FLT
574 69460132.. ....1 .... LINKAGE, DECK BRAKE
539 10259033.. ....1 .... BALL END, RH
539 97693534.. ....1 .... HCS 5/16-18 x 1½
539 99058535.. ....1 .... NUT 5/16-18 HEX WHIZLK
539 99019636.. ....1 .... NUT, 5/16-18 HEX
539 10763137.. ....4 .... SCREW ¼ -20 x 5/8
539 99058838.. ....1 .... HCS 3/8-16 x 2
539 97694939.. ....1 .... HCS 3/8-16 x 1¾
539 91506740.. ....1 .... PIN HAIR 3/32
539 99018841.. ....1 .... WASHER 5/16 SAE FLAT
532 40187242.. ....2 .... SPRING, RETURN
532 40014043.. ....2 .... KEEPER, PULLEY
575 75460244.. ....1 .... BELT SHIELD, RT
532 41559845.. ....1 .... WASHOUT PORT
539 10846146.. ....1 .... BOLT ¼-20 x ½
575 75450247.. ....1 .... BELT SHIELD, LT
NOT SHOWN
574 173003 ...1 .... BELT

20
SEAT
1
2
34
5
7
8
9
6