MTD Model 998Q Parts List

IMPORTANT: For a proper working machine, use Factory Approved Parts. V-BELTS are specially designed to engage and disengage safely. A substitute (non OEM) V-Belt can be dangerous by not disengaging completely.

Diagrams Overview

The provided diagrams illustrate the exploded views of various assemblies for the MTD Model 998Q. Each component is identified by a reference number, which corresponds to the detailed parts list below. These diagrams help in understanding the layout and relationship of different parts for assembly, disassembly, and maintenance.

Parts List

Ref. No.Part No.Description
1647-0004Control Handle
1720-0223Grip
2731-0904AUpper Control Housing
2732-0803ASpring Lever
3168646 Spd. Rack Cable Bracket
3738-0529Shoulder Nut.825 x.165 Lg.
4731-0620Control Lever
4710-0751Cap Screw 1/4-20 x.620
5713-0397Gear Insert
5736-0270Bell Washer.285 ID x.75 OD
6732-0627Shift Lever Spring
6748-0318Wheel Rachet
7731-09246 Speed Shift Lever
7736-0369Flat Washer.508 ID x 1.0 OD
8731-0905ALower Control Housing
8682-0531Pivot Arm Assembly
9710-1667AC Sunk Tap Screw #10 x.75 Lg
9750-0515Spacer.510 ID x.70 OD
10731-0906Cable Mounting Cap
10741-0978Sleeve Bearing.504 ID x.830 OD
11746-0711BDrive Cable 51.0
11750-1056Shoulder
12712-0324Top Lock Nut 1/4-20
12710-0653Tap Screw 1/4-20 x.375
13746-0883Control Housing
13682-7528Chain Cover Assembly
14710-1270Oval C-Sunk Screw
14741-0324AFlange Bearing.506 ID x.590 Lg
15746-0557Control Cable 47"
15682-7526Transmission Axle Assembly
16749-0439DUpper Handle
16618-0263ATransmission Assembly
17720-0284Wing Nut
17710-0604AHex Screw 5/16-18
18736-0451Saddle Washer.320 ID x.830 OD
18713-0453Chain
19710-1174Carriage Bolt 5/16-18 x 2.0
19638-0012Rear Axle Assembly
20726-0240Cable Tie
20741-0522Flange Bearing.506 ID x.715 Lg
21749-0907BLower Handle
21732-0832Torsion Spring
22750-0151Spacer.550 ID x.750 OD
23710-1315Screw 3/8-16 x.25
24711-0835Clevis Pin.50 Dia x 4.82 Lg.
25750-0807Spacer.385 ID x.624 OD
26782-0568Height Adjustment Spring Bracket
27710-1652Screw 1/4-20 x.625
27731-1901Trail Shield
28714-0474Cotter Pin
28732-0842Trail Shield Wire
29712-3025Hex Jam Nut 5/16-24
29631-0066Chute Assembly
30736-0425Bell Washer.325 ID x.930 OD
30731-1832Side-Discharge Chute
31756-0656Pulley
31731-1833AMulch Cover
32736-3084Flat Washer.510 ID x 1.120 OD
32782-0078BDeck 21"
33712-0397Wing Nut
33712-0896Hex Jam Nut 1/4-28
34710-0703Carriage Bolt 1/4-20 x.75
34782-7598Belt Keeper
35746-0939A6 Speed Cable
35741-0124Bearing
36782-7574ACable Adjustment Bracket
36732-0849AExtension Spring
37736-0270Bell Washer.265 ID x.75 OD
37750-1050Flange Spacer
38712-3006Hex Nut 1/4-20
38682-0027AIdler Bracket Assembly
39710-0167Carriage Screw 1/4-20 x.50
39710-0299Hex Cap Screw 1/4-28 x 1.0
40712-0138Hex Nut 1/4-28
40741-0682ABearing Sleeve
41782-7575ACable Mounting Bracket
41736-0570Flat Washer.885 ID x 1.45 OD
42736-0329Lock Washer 1/4
42721-0329Oil Seal
43756-0625Cable Roller
44618-0253Upper Housing Assembly
44738-0924Shoulder Screw.375 ID x 1/4-14
45782-7601ACable Bracket
45736-0264Flat Washer.330 ID x.630 OD
46741-0690Bearing
46714-0104Cotter Pin
47736-0616Thrust Washer.504 ID x.70 OD
47732-0306Compression Spring
48782-7595Pivot Bracket
48734-1981AWheel 9 x 2
49712-0429Hex Nut 5/16-18
49712-0414Top Lock Tab Weld Nut 1/4-20
50711-1168Output Shaft 6T
5016855Ratchet Pawl Plate
51717-1469Gear 34T
5110622BPlastic Spring Ratchet
52741-0674Bearing
52748-0381Pawl RH
53717-1487Pinion Shaft 10T
53748-0188BPawl LH
54736-0314Thrust Washer 3/8 x.70
54738-0137AShld Screw.340 ID x.285 OD
55736-0569Thrust Washer.388 x.625
55748-0318Wheel Rachet
56618-0252Lower Housing Assembly
56710-0751Hex Cap Screw 1/4-20 x.620
57710-0642Hex Screw 1/2-20 x.75
57737-3000Grease Fitting
58611-0066Shaft Assembly
58736-0931Flat Washer.203 ID x.403 OD
59664-0076Grass Bag
59747-0924Wheel Pin Lock
60747-0940ASupport Rod w/ Rope Guide
60682-9020ACaster Assembly RH
61747-0939Pivot Rod
61682-9021ACaster Assembly LH
62747-0937Grass Bag Frame
62682-9024Caster Bracket Assembly RH
63631-0071Grass Bag Cover
63682-9026Caster Bracket Assembly LH
64726-0106Cap Nut
64710-1348Screw 1/4-14 x.500
65741-0673Bearing
65710-1652Screw 1/4-20 x.625
66710-0654AHex Washer Screw 3/8-16 x 1.0
67711-1146Caster Axle
68726-0233Push Nut.25ID x.50OD
69710-0703Carriage Screw 1/4-20 x.75
70710-0969Screw #12-16 x 1.00
71736-0232Wave Washer.531 ID x.781 OD
72712-0397Wing Nut
73710-0260Carriage Bolt 5/16-18 x.62
74754-0460Belt 3/8 x 39.24
75656-0613Pulley Assembly
76750-1071Sleeve Spacer.88 ID x 1.13 OD
76782-7597Pivot Bracket
77750-1070Sleeve Spacer.88 ID x 1.00 OD
78725-0157Cable Tie
79782-7596Control Arm
80711-1114Pivot Shaft
81736-0526Wave Washer 1.38 ID x.88 OD
82731-1828Baffle
83710-0653Screw 1/4-20 x 3.75
84748-0377CBlade Adapter
85742-074121" Mulching Blade
86736-0524ABlade Bell Support
87710-1257Hex Bolt 3/8-24 x 2.5
88731-1874Chute Door
89732-0819Torsion Spring
90726-0111Push Cap
91747-0965Pivot Rod
92731-1713BDischarge Chute
94726-0214Push Cap
95736-0366Flat Washer.640 ID x 1.12 OD
96741-0685Flange Bearing
97712-3004AFlange Lock Nut 5/16-18
98734-1857Wheel 7 x 2
99731-1887Hubcap - Spoke w/ Hole
100731-0981AHubcap - Radial Spoke
101682-3052Handle Bracket Assembly - RH
102682-3053Handle Bracket Assembly - LH
102710-0134Carriage Screw 1/4-20 x.62

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