Page 1
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Page 2
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Page 3
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Page 4
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Page 5
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Page 6
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Page 7
Issued 9/97
CYLINDER & CRANKCASE ASSEMBLY - MODEL 990r
(Serial No. 611000001 and greater)
Item Part No. Description
1 181000 O-Ring
2 181001 Cylinder Head Gasket
3 181002 Cylinder
4 181003 Screw, (M5 X 18.7mm)
5 181004 Cylinder Gasket
6 181005 Piston Ring Set
7 181006 Wrist Pin
8 181007 Piston
9 181008 Wrist Pin Button
10 181009 Connecting Rod
11 181010 Cylinder Stud (83.5mm)
12 181011 Cylinder Stud (115.5mm)
13 181012 Cam Bracket Screw
14 181013 Cam Bracket
15 181014 Cam Follower
Item Part No. Description
16 181015 Cam Gear
17 181016 Seal
18 181017 Crankcase W/Power Shaft
(includes items 11, 12 & 17)
19 181018 Oil Pan Gasket
20 181019 Oil Pan
21 181020 Screw (M5 X 15.8mm)
22 181021 O-Ring
23 181022 Oil Fill Plug (includes item 22)
* 181023 Piston and Rod Assembly
(items 6-10)
* 181024 Engine Gasket Kit
* not shown
1
10
9
8
7
6
18
15
16
17
14
13
12
5
4
3
2
23
22
19
20
21
11
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Page 8
Issued 9/97
CYLINDER HEAD ASSEMBLY - MODEL 990r
(Serial No. 611000001 and greater)
Item Part No. Description
1 181025 Valve Cover Screw
2 181026 Breather Hose
3 181027 Breather Assembly
4 181028 Valve Cover
5 181029 Valve Cover Gasket
6 181030 Rocker Adjusting Nut
7 181031 Rocker Arm Pivot
8 181032 Rocker Arm
9 181033 Push Rod
10 181034 Hex Nut
11 181035 Washer
12 181036 Push Rod Guide
13 181037 Valve Spring Retainer
14 181038 Valve Spring
15 181039 Cylinder Head
16 181040 Valve
17 180852 Spark Plug
* 181041 Cylinder Head Assembly
(items 13-16)
* 181042 Short Block Assembly
(all items from pages 2 & 3)
* not shown
1
17
13
12
11
10
9
8
7
6
5
4
3
2
10
11
10
14
15
16
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Page 9
Issued 9/97
CARBURETOR & MUFFLER ASSEMBLIES - MODEL 990r
(Serial No. 611000001 and greater)
Item Part No. Description
1 181043 Muffler Mounting Screw(2 required)
2 181044 Muffler Mounting Screw
3 180890 Spark Arrestor Screen
4 181045 Screen Cover
5 181046 Screen Cover Screw
6 181047 Muffler (items 1-7)
7 181048 Muffler Gasket
8 181049 Muffler Baffle
9 181050 Air Filter Cover Screw
10 181051 Air Filter Cover
11 180350 Air Filter
12 181052 Air Filter Base Screw (52.5mm)
13 181053 Screw (M5 X 29mm)
14 181054 Primer and Line Assembly
15 181055 Air Filter Base
16 181056 Gasket
17 181057 Choke Lever
18 181058 Carburetor W/Choke Lever
(includes limiter caps)
19 181059 Gasket
Item
Part No. Description
20 181060 Carb Mount Insulator
21 181034 Hex Nut
22 181061 Intake Gasket
23 181062 Intake Baffle
24 181003 Screw (M5 X 18.7mm)
25 181063 Fan Housing
26 181064 Tinnerman Nut
27 181065 Spacer
28 180929 Flywheel
29 181066 Module Screw
30 611063 Ground Tab
31 181067 Ignition Module
32 181094 18" Lead Wire Set
* 610676 Flywheel Key
* 180142 Flywheel Starter Pawl Repair Kit
* 181068 O.E.M. Carburetor Repair Kit
* 181069 Gasket-Diaphragm Repair Kit
* 180986 Carburetor Limiter Cap Set (Walbro)
* 181562 Carburetor Limiter Cap Set (Zama)
* not shown
1
22
23
27
28
30
29
31
32
8
7
6
3
5
4
2
18
19
13
20
21
16
17
11
10
13
14
12
25
24
26
15
9
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Page 10
Issued 9/97
CLUTCH, STARTER MODULE & FUEL TANK ASSEMBLIES MODEL 990r
(
Serial No. 611000001 and greater)
Item Part No. Description
1 612468 Compression Spring
2 181070 Screw (M5 X 32mm)
3 181071 Clutch Housing
4 180232 Clutch Drum
5 181072 Isolator
6 181837 Clutch
7 181074 Clutch Washer
8 181075 Starter Housing
9 613102 Starter Spring
10 180535 Starter Pulley
11 613103 Starter Rope
12 181076 Starter Pulley Retainer
13 181077 Screw (M4 X 12.7mm)
14 181078 Rope Guide Retainer
15 611061 Rope Guide
Item Part No. Description
16 181079 Starter Handle
17 181080 Fuel Tank Bracket Screw
18 181081 Fuel Tank Bracket
19 181082 Fuel Tank
(includes items 20, 22 & 23)
20 181083 Fuel Cap
21 181084 Fuel Tank Pad
22 181085 Fuel Line Assembly W/Filter
23 181086 Fuel Return Line
* 181102 Clutch Housing Assembly W/Drum
(items 3 & 4)
* 181087 Starter Module Assembly
(items 8-13, 15 & 16)
* not shown
11
21
12
13
20
10
9
8
17
23
22
18
19
15
13
14
16
3
4
5
6
7
2
1
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Page 11
Issued 9/97
HANDLE & UPPER BOOM ASSEMBLY - MODEL 990r
(Serial No. 611000001 and greater)
Item Part
No. Description
1 181020 Screw (M5 X 15.8mm)
2 181088 Engine Cover
3 181089 Screw (M5 X 15.78mm)
4 181104 Engine Cover Screw
5 181090 Handle Assembly
6 181070 Screw (M5 X 32mm)
7 181091 Switch Slide
8 181092 Upper Drive Housing
Assembly with Shaft
9 181093 Throttle Cable
10 181094 18" Lead Wire Set
11 181095 Anti-Rotation Screw
12 610327 Shoulder Strap Clip
13 181096 Trigger
14 610314 Spring
15 181097 Switch
Item
Part No. Description
16 181098 Switch & Trigger Retainer
17 181811 Screw
18 181812 Upper Handle Clamp
19 181813 Middle Handle Clamp
20 181814 Lower Handle Clamp
21 181815 Nut
22 145569 Anti-Rotation Screw
23 181077 Retainer Screw
24 181099 J-Handle Assembly (items 25 & 26)
25 612831 Grip
26 612021 Tube Closure
* 683295 Handle Bracket Assembly
* not shown
1
25
26
17
7
6
5
6
4
2
3
24
15
23
16
11
9
8
12
19
18
22
21
20
5
13
10
14
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Page 12
Issued 9/97
BOOM AND TRIMMER PARTS - MODEL 990r
(Serial No. 611000001 and greater)
Item Part No.
Description
1 181092 Upper Drive Shaft and
Housing Assembly
2 181616 Click-Link System (incldes 3 & 4)
3 181617 Bolt
4 181618 Adjustment Knob
5 180804 Lower Drive Shaft Housing
6 613300 Flexible Drive Shaft
7 147539 Guard Mounting Hardware
8 147677 Mounting Hardware & Grease
Plug Assembly
9 147488 Gearbox
(items 8, 14, 17 and 18)
10 683304 Guard Mounting Screws
11 180387 Guard & Blade Assembly
(includes 12)
12 682061 Blade Assembly
13 147492 Guard Mount
14 147489 Driver
15 145873 Brush Blade with Cover
16 613231 Blade Cover
17 147490 Blade Retainer Washer
18 147491 Lock Nut
19 612483 Spool Shaft
20 683301 Outer Spool and Eyelet Assembly
21 612026 Retainer
22 610636 Spring
23 147495 Inner Reel
24 180814 Bump Head Knob Assembly
* 613226 Locking Rod Tool
* 682075 Shoulder Strap Assembly
Optional
Accessories
* 180120 Cutting Line (50 ft)
* 147345 Spool and Line Assembly (40 ft)
* 147498 Complete Cutting Head Assembly
(items 19-24)
* 180014 Blade Retaining Kit
(items 17 and 18)
* 181100 SAE 30 Oil (48 100ml Bottles)
* 181101 Oil Fill Spout
* not shown
1
8
9
7
6
5
4
3
2
13
11
10
12
19
17
14
18
17
15
16
7
12
22
21
20
23
24
For Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
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