Husqvarna RZ4621 BF User manual

Parts Manual
RZ4621 BF / 966582301
Please read the operator’s manual carefully and make sure you
understand the instructions before using the machine.
English

©2010 HTC All rights reserved.
Beatrice, NE. 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
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
The machine’s manufacturing number can be found on the printed plate affixed to the engine compartment.

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

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

FRAME
510 2618021.. .... 1 .... PLATE, OUTER BRAKE
510 2067032.. .... 1 .... PLATE, BRAKE LATCH
510 2456023.. .... 1 .... PLATE, DECK HEIGHT
510 2405024.. .... 1 .... PLATE, DECK HEIGHT
522 8429025.. .... 1 .... FOOT PLATE w/DECALS
522 7195046.. .... 1 .... FOOT REST
522 4433027.. .... 1 .... MOUNT, STRUT, RT, BLK
522 4433048.. .... 1 .... MOUNT, STRUT, LT, BLK
521 9965019.. .... 4 .... NUT 3/8-16 HEX FLG NYLOC
539 99064510.. .... 4 .... RHSNB 3/8-16 x 1
510 22590211.. .... 2 .... SUPPORT, FENDER
510 22600212.. .... 1 .... SUPPORT, TANK
510 17750313.. .... 1 .... FRAME, FRONT RT
510 17740314.. .... 1 .... FRAME, FRONT LT
539 97697915.. .. 14 .... NUT 3/8-16 HEX NYLOC
539 11197616.. .... 6 .... BOLT 3/8-16 x 25/8 THD FRM
539 99018817.. .. 20 .... WASHER 5/16 SAE FLAT
539 99104618.. .... 2 .... HCS 5/16-18 x 2½
539 99071719.. .... 5 .... NUT 5/16-18 HEX NYLOC
539 10233520.. .... 4 .... HCS 5/16-18 x 4
539 97776121.. .... 2 .... HCS ¼-20 x 1
539 11067422.. .... 4 .... SCREW 10-12 x 1¼ WSH HD
539 11912423.. .... 2 .... NUT 7/16-14 HEX NYLOC
539 11478924.. .... 2 .... SWIVEL
521 93810125.. .... 1 .... LINK, FRONT SUSPENSION
515 98810126.. .... 6 .... SPACER ½ OD x 1½
539 10258727.. .... 6 .... GROMMET, BUMPER
539 10441128.. .... 1 .... KNOB w/STUD
539 10955429.. .... 2 .... WASHER ½ FLAT
539 10134130.. .... 8 .... HCS 3/8-16 x 3
539 99012231.. .... 8 .... WASHER 3/8 SAE FLT
539 97693832.. .... 6 .... HCS 5/16-18 x 2¼
539 11289933.. .... 8 .... NUT 5/16-18 FLANGE NYLOC
539 10172134.. .... 3 .... HCS 5/16-18 x 2¾
539 97698935.. .... 3 .... #4 HAIRPIN
539 10252636.. .... 1 .... PIN, LIFT
539 99005537.. .... 2 .... WASHER ¼ FLAT SAE
539 97697838.. .... 2 .... NUT ¼-20 HEX NYLOC
ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION
5

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

510 1720021.. .... 1 .... PLATE, ENGINE
539 1120922.. .... 1 .... ARM, IDLER
539 1012313.. .... 1 .... SPINDLE, IDLER
539 1126704.. .... 1 .... WASHER, HEAVY
539 1103115.. .... 1 .... PULLEY, IDLER
539 1034336.. .... 1 .... HCS ½-13 x 3¼
539 1095547.. .... 2 .... WASHER ½ FLT
539 1013318.. .... 1 .... NUT ½-13 HEX NYLOC
505 2873019.. .... 1 .... CLUTCH
516 01180210.. .... 1 .... HITCH
539 11453011.. .... 1 .... PULLEY, ENGINE
539 11225212.. .... 1 .... SPACER
510 24600213.. .... 1 .... STOP, CLUTCH
539 10938914.. .... 1 .... HCS 3/8-16 x 3½ TPBLT
539 99069215.. .... 2 .... WASHER 5/16 STD FLT
539 97697916.. .... 2 .... NUT 3/8-16 HEX NYLOC
539 99020817.. .... 2 .... RHSNB 5/16-18 x 1
539 97693518.. .... 3 .... HCS 5/16-18 x 1½
539 11289919.. .... 6 .... NUT 5/16-18 FLANGE NYLOC
539 11042520.. .... 2 .... FUEL LINE 5"
539 91222221.. .... 4 .... HOSE CLAMP
539 97694422.. .... 1 .... HCS 7/16-20 x 3½
539 11006423.. .... 1 .... WASHER, CLUTCH
539 91632524.. .... 1 .... VALVE, FUEL
532 19610525.. .... 1 .... SPRING, DECK DRIVE
539 10136226.. .... 1 .... HOSE, DRAIN
539 10136427.. .... 1 .... PLUG, OIL
539 10136328.. .... 1 .... CLAMP
539 99036229.. .... 1 .... SCREW ¼-20 x 5/8 SLF TAP
539 10563730.. .... 1 .... HARNESS, CLUTCH
539 99058531.. .... 1 .... NUT 5/16-18 WHIZLK
539 99066932.. .... 1 .... HCS 5/16-18 x 1¾
ENGINE PLATE
ITEM PART NO. QTY. DESCRIPTION ITEM PART NO. QTY. DESCRIPTION
7

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

STEERING
539 1315171.. .... 2 .... BLOCK, UPPER
539 1315192.. .... 2 .... BLOCK, LOWER
539 1315183.. .... 4 .... BEARING, FLANGE
522 4529014.. .... 2 .... PIVOT SECTION, DRIVE
539 1315215.. .... 2 .... MOUNT, DRIVE CONTROL
539 1083956.. .... 1 .... HCS 5/16-18 x 2 TPBLT
539 1128997.. .... 2 .... NUT 5/16-18 FLANGE NYLOC
539 1330078.. .... 2 .... WASHER, .825 x 1.087 WAVE
539 9907179.. .. 14 .... NUT 5/16-18 HEX NYLOC
539 99018810.. .. 12 .... WASHER 5/16 SAE FLAT
539 10272011.. .... 2 .... DAMPENER
539 99058512.. .... 4 .... NUT 5/16-18 HEX WHIZLK
510 42260113.. .... 6 .... RHSNB 5/16-18 x 4
539 99066914.. .... 2 .... HCS 5/16-18 x 1¾
539 99020915.. .... 2 .... HCS 5/16-18 x 1
539 97693516.. .... 6 .... HCS 5/16-18 x 1½
522 52430317.. .... 2 .... LEVER, w/GRIP
521 98260118.. .... 1 .... KNOB
539 10354319.. .... 1 .... SPACER
539 10284520.. .... 2 .... SPRING
ITEM PARTNO. QTY. DESCRIPTION ITEMPARTNO. QTY. DESCRIPTION
9

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