McCulloch ZM3816 BF User manual

ZM3816 BF / 966582001
Parts Manual
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
©2010 HTC. All rights reserved.
Beatrice, NE. Printed in U.S.A.

CONTENTS
NOTE: ALL FASTENERS ARE GRADE 5 UNLESS OTHERWISE SPECIFIED.
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
17
17
9
9
37
38
39
36
22
12
35
11
14
18
6
5
11
14
11
8
8

ITEM PARTNO. QTY. DESCRIPTION ITEM PARTNO. QTY. DESCRIPTION
5
FRAME
525 4547051.. ....1 .... FRAME TUBE, LH BLK
525 4549052.. ....1 .... FRAME TUBE, RH BLK
574 3564053.. ....1 .... SEAT SUPPORT, REAR BLK
532 1951614.. ....2 .... STUD w/ ANTI-ROTATE
539 9903625.. ....6 .... SCREW ¼-20 x 5/8 SLF TAP
525 8645026.. ....1 .... BRACKET, FUEL TANK BLK
539 9769417.. ....1 .... HCS 3/8-16 x 1¼
539 1128998.. ..14 .... NUT 5/16-18 HEX FLG NYLOC
539 9901889.. ..12 .... WASHER 5/16 SAE FLT
539 97693810.. ....4 .... HCS 5/16-18 x 2¼
539 99012211.. ..17 .... 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.. ..13 .... NUT 3/8-16 FLANGE NYLOC
539 99064515.. ....2 .... RHSNB 3/8-16 x 1
574 35470516.. ....1 .... GUARD, REAR BLK
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 77980421.. ....1 .... FOOT REST BLK
539 10258722.. ....9 .... GROMMET, BUMPER
575 66130523.. ....1 .... PANEL, SEAT SUPPORT BLK
539 10476324.. ....4 .... RETAINER, U TYPE
576 41470125.. ....1 .... FOOT PLATE w/ DECALS BLK
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
575 32840533.. ....1 .... PLATE, RH BLK
575 32830534.. ....1 .... PLATE, LH BLK
575 95220135.. ....1 .... 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 BLK
525 60550239.. ....1 .... BRACKET, FRONT DECK
NOT SHOWN
539 110290 ...2 .... FOAM STRIP

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

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.. ....3 .... NUT 5/16-18 HEX FLG 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 FLT
539 9170336.. ....1 .... KEY ¼ SQ x 2½ LG
539 9905177.. ....3 .... WASHER 3/8 FLT 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 35580512.. ....1 .... PLATE, ENGINE BLK
539 10839613.. ....1 .... HCS 5/16-18 x 2½
539 11635014.. ....1 .... SPRING 3½
574 49750415.. ....1 .... ARM IDLER
574 88280116.. ....1 .... HCS 7/16-20 x 4
539 11554617.. ....1 .... WASHER
574 382001 18.. ...1 .... PULLEY, ENGINE
539 99058519.. ....1 .... NUT 5/16-18 HEX WHIZLK
539 10956220.. ....1 .... WASHER 3/8 x ¾ SPEC

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
12
27
28
29
21
20
30

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
539 11908727.. ....2 .... BUSHING
539 97693728.. ....2 .... HCS 5/16-18 x 2
539 99018829.. ....2 .... WASHER 5/16 SAE FLT
539 11289930.. ....2 .... NUT 5/16-18 FLG HEX NYLOC

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