BR320 Specs
Stihl single cylinder two-stroke engine
Displacement = 44.9 cm3 (2.74 cu.in)
Bore = 41 mm (1.61 in)
Stroke = 34 mm (1.34 in)
Engine power = 2.0 kW (2.7 bhp)
Air flow rate (with blower tube and nozzle) = 740 m3/h (435 cfm)
Air velocity (with blower tube and nozzle) = 72 m/s (236 ft/s)
Max. air flow rate = 1000 m3/h (512 cfm)
Weight (dry) = 8.9 kg (19.6 lb)
Bystanders noise per ANSI B 175.2-1990 = 73 dB(A)
Spark plug gap = 0.5 mm (0.02 in)
Order Stihl BR320 Backpack Blower Parts
4203 141 0310 Pre Filter
4203 141 0301 Air Filter
4203 708 0800 Anti-Vibration AV Buffer Spring
4203 790 8001 Back rest pad
4203 701 6102 Pleated Blower Tube
4203 708 3402 Blower Tube
4203 708 6300 Blower Tube Nozzle
4203 120 0601 Carburetor (Walbro HD-4B)
4203 120 0605A Carburetor for BR320L (Walbro WT-230A)
D10-HD Carburetor Gasket and Diaphragm Kit (Walbro HD-4B)
K10-HD Carburetor Rebuild Kit (For Walbro HD-4B)
D10-WAT Carburetor Gasket and Diaphragm Kit (Walbro WT-230A)
K10-WAT Carburetor Rebuild Kit (For Walbro WT-230A, WT-489)
4203 182 9501 Choke Knob
4203 020 1201 Cylinder and Piston Kit (46mm)
4203 350 0502 Fuel Cap
0000 350 3502 / 0000 350 3520 Fuel Filter (Zama ZF-4)
4203 350 7600 Fuel Line
0000 989 0516 Fuel Line Grommet
4203 007 1050 Gasket Set
4203 710 9000 Harness
4203 400 1301 Ignition Coil
4203 140 0602 Muffler
9640 003 1600 Oil Seal 15x29.6x4
4203 030 2001 Piston Kit (includes rings, pin and clips)
Bosch WSR6F Spark Plug
Champion RCJ6Y Spark Plug
NGK BPMR7A Spark Plug
4203 190 0405 Starter (Recoil)
0000 190 3401 Starter Handle
4116 195 7200 Starter Pawl
K10-WAT Carburetor Rebuild Kit (For Walbro WT-230A, WT-489)
4203 182 9501 Choke Knob
4203 020 1201 Cylinder and Piston Kit (46mm)
4203 350 0502 Fuel Cap
0000 350 3502 / 0000 350 3520 Fuel Filter (Zama ZF-4)
4203 350 7600 Fuel Line
0000 989 0516 Fuel Line Grommet
4203 007 1050 Gasket Set
4203 710 9000 Harness
4203 400 1301 Ignition Coil
4203 140 0602 Muffler
9640 003 1600 Oil Seal 15x29.6x4
4203 030 2001 Piston Kit (includes rings, pin and clips)
Bosch WSR6F Spark Plug
Champion RCJ6Y Spark Plug
NGK BPMR7A Spark Plug
4203 190 0405 Starter (Recoil)
0000 190 3401 Starter Handle
4116 195 7200 Starter Pawl
1118 190 0600 Starter Spring
4203 710 9000 Strap Harness
4203 180 1111 Throttle Cable
4203 182 1000 Trigger
4203 710 9000 Strap Harness
4203 180 1111 Throttle Cable
4203 182 1000 Trigger
Stihl BR320 Part Number Lookup
Crankcase, Cylinder:
# 4203 020 2106 Crankcase
2 9371 470 2610 Cylindrical pin 5x18
3 9465 620 2620 Snap ring 37
4 9523 003 4260 Grooved ball bearing 15x35x13
5 9503 003 0340 Grooved ball bearing 6202
6 4116 030 0400 Crankshaft
7 1120 036 8500 Woodruff key 2x3.7
8 9640 003 1600 Oil seal 15x29.6x4
9 9640 003 1340 Oil seal 13x22x5
10 4203 029 0500 Gasket
11 9022 341 1050 Spline screw IS M5x25
12 4203 020 1200 Cylinder with piston Ø 41mm
13 4203 030 2000 Piston Ø 41mm (1,3,5)
14 4203 034 3000 Piston ring Ø 41x1.5mm
15 4119 034 1500 Piston pin
16 9463 650 1000 Snap ring 10
21 9512 003 2343 Needle cage 10x14x13
22 4203 029 2300 Cylinder gasket
23 1115 149 0600 Exhaust gasket
24 0000 400 7000 Spark plug NGK BPMR7A
25 1110 400 7005 Spark plug Bosch WSR 6 F
26 0000 998 0603 Torsion spring
27 1106 405 1000 Spark plug boot
28 4203 180 2150 Support
29 Washer 5.3
30 ? Spline screw IS M5x20
31 ? 9291 021 0121 Washer 5.3 (46.2001)
32 ? 9022 341 0980 Spline screw IS M5x16 (46.2001)
33 9022 371 1020 3
Spline screw IS M5x20
4203 007 1050 1 Set of gaskets
Rewind starter, Muffler:
1 4223 195 0600 Starter cup
2 9210 261 1140 Hexagon nut M8x1
3 4203 190 0405 Starter cover with rewind starter
4 4203 190 0406 Starter cover
5 1110 084 9102 Bushing
6 9443 825 7130 Hollow rivet 7.5x1x6.8
7 0000 190 3401 Starter grip ElastoStart
8 1113 195 8200 Starter rope Ø 3.5x960mm
0000 930 2203 Starter rope Ø 3.5mm x 30.5m (B)
9 1118 190 0600 Rewind spring
10 4119 195 0400 Rope rotor
11 4116 195 7200 Pawl
12 0000 958 0923 Washer
13 1118 195 3500 Spring
14 9022 371 1020 Spline screw IS M5x20
15 4203 967 1500 Model plate BR 320
17 1115 149 0600 Exhaust gasket
18 4203 140 0601 Muffler Europa
18 4203 140 0602 Muffler USA, CDN, AUS
19 9022 341 0980 Spline screw IS M5x16
20 4203 141 9005 Screen USA, CDN, AUS
21 4203 141 6600 Clip USA, CDN, AUS
40 ? 1128 190 2900 Starter rope Ø 3.5mm (41.98)
? 0000 930 2267 Starter rope Ø 3.5mm / 28 pieces (41.98)
41 ? 4203 140 0600 Muffler * X 25 117 539 (17.92)
42 ? 9022 341 1190 Spline screw IS M5x72 * X 25 117 539 (17.92)
43 ? 1121 195 3400 Starter grip
44 ? 0000 958 0806 Washer
Air filter, Ignition system:
1 4203 129 0901 Gasket
2 4203 122 1600 Heat shield
3 9022 341 0980 Spline screw IS M5x16
4 4203 120 2200 Flange
6 9022 341 1050 Spline screw IS M5x25
7 4203 129 0900 Gasket
9 4203 120 0601 Carburetor HD-4B
9 4203 120 0603 Carburetor HD-13B USA
11 4203 182 9501 Choke knob
12 4203 122 1000 Flange (5)
13 4203 140 2803 Filter housing
14 9443 825 7130 Hollow rivet 7.5x1x6.8
15 9022 341 1220 Spline screw IS M5x48
17 4203 140 1002 Filter cover
18 4227 700 2300 Screw plug
19 4203 400 1200 Flywheel
20 9210 261 1140 Hexagon nut M8x1
21 4203 400 1301 Ignition module
22 Ignition lead 270mm
0000 405 0600 Ignition lead 1m (B)
0000 930 2251 Ignition lead 10m (B)
23 0751 030 8415 Spade terminal 6.3
24 9022 341 1019 Spline screw IS M5x20
25 0000 989 0602 Grommet
4203 007 1025 Air filter kit (B)
26 4203 141 0300 Air filter
27 4203 141 0310 Prefilter
28 ? 9291 021 0120 Washer 5.3
29 ? 4119 182 9500 Choke knob * X 25 117 539 (17.92)
30 ? 4203 182 9505 Choke knob * X 25 117 539 (17.92)
Carburetor BR320 HD-4B, HD-13B:
# 4203 120 0601 Carburetor HD-4B
# 4203 120 0603 Carburetor HD-13B USA
1 4116 121 5100 Inlet needle
2 4116 122 3002 Spring
3 1113 121 9200 Spindle
4 4116 121 5000 Inlet control lever
5 1114 122 7400 Round head screw
6 1120 121 5405 Valve jet
7 4117 122 9402 Plug
8 4116 129 0901 Gasket
9 4116 121 4700 Metering diaphragm
10 4116 121 0800 End cover
11 1106 122 7400 Round head screw
12 1114 121 7800 Strainer
13 4116 121 4800 Pump diaphragm
14 4116 129 0902 Gasket
15 4203 121 0800 End cover
16 1114 122 7100 Screw
18 4117 122 6200 Idle speed adjustment screw
19 4116 120 7100 Throttle shaft with lever
20 4116 122 3200 Torsion spring
21 4116 121 3300 Throttle shutter
22 1115 122 7400 Round head screw
23 4116 122 5000 Spacer sleeve
24 4203 123 7300 Lever
25 1110 122 7400 Round head screw
26 4215 121 8600 Washer
27 4215 121 8900 Pin
28 1117 122 9000 E-clip
29 1116 122 3000 Spring
30 1116 122 4200 Ball
31 4203 121 3001 Choke shaft
32 4116 121 2900 Choke shutter
33 4117 122 3006 Spring
34 4116 122 3001 Spring
35 4203 122 6701 High speed adjustment screw
36 4203 122 6801 Low speed adjustment screw
37 4203 122 3600 Sealing ring USA
38 4203 122 6703 High speed adjustment screw USA ) 37
39 4203 122 6804 Low speed adjustment screw USA ) 37
40 4203 121 2700 Cap USA
41 4203 121 5400 Valve jet 0.52 USA
42 5910 890 4500 Puller USA (B)
4116 007 1061 Set of carburetor parts
4203 120 0602 Carburetor HD-7 USA (C) (11.97)
50 ? 4130 122 3600 Sealing ring USA (11.97)
51 ? 4130 121 8601 Washer USA (11.97)
52 ? 1115 122 3002 Spring USA (11.97)
53 ? 4130 121 8602 Washer USA (11.97)
54 ? 4130 122 6701 High speed adjustment screw USA (11.97)
55 ? 4130 121 2701 Cap USA (11.97)
56 ? 4124 122 3600 Sealing ring USA (11.97)
57 ? 1111 121 8605 Washer USA (11.97)
58 ? 4130 122 6801 Low speed adjustment screw USA (11.97)
59 ? 4130 121 2700 Cap USA (11.97)
60 ? 4130 122 3601 Sealing ring USA (11.97)
61 ? 4203 121 3000 Choke shaft * X 25 117 539 (17.92)
62 ? 4116 122 6700 High speed adjustment screw (14.96)
63 ? 4116 122 6800 Low speed adjustment screw (14.96)
Carburetor BR 320 L WT-230A, WT-489 USA:
# 4203 120 0605 Carburetor WT-230A
# 4203 120 0607 Carburetor WT-489 USA
1 1110 121 5100 Inlet needle
2 1120 122 3001 Spring
3 1113 121 9200 Spindle
4 1113 121 5000 Inlet control lever
5 1114 122 7400 Round head screw
6 1120 121 5405 Valve jet
7 4117 122 9402 Plug
8 1120 129 0900 Gasket
9 1113 121 4705 Metering diaphragm
10 1113 121 0800 End cover
11 1106 122 7400 Round head screw
12 1114 121 7800 Strainer
13 1121 121 4801 Pump diaphragm
14 1120 129 0905 Gasket
15 4203 121 0801 End cover
16 1114 122 7100 Screw
18 4117 122 3006 Spring
19 4117 122 6200 Idle speed adjustment screw
20 4203 120 7100 Throttle shaft with lever
21 1113 122 3205 Torsion spring
22 4116 122 5000 Spacer sleeve
23 4203 123 7300 Lever
24 4215 121 8900 Pin
25 4215 121 8600 Washer
26 1117 122 9000 E-clip
27 1115 122 7400 Round head screw
28 4117 121 3300 Throttle shutter
29 1110 122 7400 Round head screw
30 1116 122 3000 Spring
31 1116 122 4200 Ball
32 4203 121 3002 Choke shaft
33 4117 121 2900 Choke shutter
34 1115 122 3002 Spring
35 4117 122 3007 Spring
36 4130 122 6700 High speed adjustment screw
37 4203 122 6802 Low speed adjustment screw
38 4203 122 3600 Sealing ring USA
39 4203 122 6702 High speed adjustment screw USA ) 38
40 4203 122 6803 Low speed adjustment screw USA ) 38
41 4203 121 2700 Cap USA
42 5910 890 4500 Puller USA (B)
4203 007 1061 Set of carburetor parts
4203 120 0606 Carburetor WT-331 USA (C) (11.97)
50 ? 4130 122 3600 Sealing ring USA (11.97)
51 ? 4130 121 8601 Washer USA (11.97)
52 ? 4130 121 8602 Washer USA (11.97)
53 ? 4130 122 6701 High speed adjustment screw USA (11.97)
54 ? 4130 121 2701 Cap USA (11.97)
55 ? 4124 122 3600 Sealing ring USA (11.97)
56 ? 1111 121 8605 Washer USA (11.97)
57 ? 4130 122 6801 Low speed adjustment screw USA (11.97)
58 ? 4130 121 2700 Cap USA (11.97)
59 ? 4130 122 3601 Sealing ring USA (11.97)
60 ? 1115 122 3002 Spring USA (11.97)
61 ? 4119 122 6801 Low speed adjustment screw (14.96)
62 ? 1120 122 6705 High speed adjustment screw (14.96
Fan housing:
# 4203 700 4102 Fan housing
2 9443 825 7130 Hollow rivet 7.5x1x6.8
3 4203 350 7600 Hose
4 0000 989 0516 Grommet
5 0000 350 3502 Pickup body
6 0000 358 1800 Filter
7 9074 478 4545 Pan head self-tapping screw IS P6x26.5
8 9022 371 1020 Spline screw IS M5x20
9 4203 350 0502 Filler cap
10 0000 350 0900 Rope
11 0000 353 0701 Ring
12 4203 700 3401 Fanwheel
13 4203 704 3405 Fanwheel (BR320L)
14 9022 341 0980 Spline screw IS M5x16
15 4203 701 0701 Fan housing, outer
16 0000 706 4100 Cap
17 4203 706 2105 Shroud
18 4203 706 1500 Soundproofing mat (BR320L)
19 4203 706 1505 Soundproofing mat (BR320L)
20 9900 003 0001 Clip (BR320L)
21 9074 478 4425 Pan head self-tapping screw IS P6x19
22 4203 791 0300 Handle
23 9022 313 1120 Spline screw IS M5x58
24 9212 421 0700 Lock nut M5
25 4203 182 2107 Support
26 4203 791 3200 Insert
40 ? 4203 358 7700 Hose * X 25 117 539 (17.92)
41 ? 1111 353 2500 Elbow connector * X 25 117 539 (17.92)
42 ? 1110 141 8600 Hose 135mm / 5 3/8'' * X 25 117 539 (17.92)
43 ? 4203 352 8300 Cap
Backplate:
# 4203 700 3850 Backplate
1 4203 760 9050 AV-Spring
2 Bracket
3 Bracket
4 Spring
5 9074 478 4475 Pan head self-tapping screw IS P6x21.5
6 9074 478 4425 Pan head self-tapping screw IS P6x19
10 4203 790 8001 Back rest pad
11 ? 4203 790 8000 Back rest pad (06.2003)
12 ? 4203 790 8005 Back rest pad (B) (06.2003)
13 ? 4203 710 9100 Lap belt (B) (06.2003)
14 0751 030 7651 Rivet 5.9x17
15 4203 710 9000 Harness
16 4203 007 1002 Harness buckle
17 9408 021 4530 Rivet shank 4x8x6
18 9409 021 4420 Rivet head 4x8
19 4203 710 6900 Hook with webbing
20 4203 791 4600 Hook
21 4119 890 3400 Combination wrench
22 0000 890 2300 Screwdriver
22 0000 890 2305 Screwdriver available in Brazil only
23 0000 967 3701 Warning pictogram BR
24 4203 760 8100 Protective screen (B)
6 ? 9074 478 4425 Pan head self-tapping screw IS P6x19 (14.96)
25 ? 4203 790 9900 Annular buffer (14.96)
26 ? 1121 791 1200 Retainer (14.96)
27 ? 1121 791 6105 Pan head screw (14.96)
Blower Tube, Pleated hose, ULV nozzle:
1 4203 708 6901 Elbow
2 4203 701 6300 Slip ring
3 4203 700 7100 Hose clip
4 4203 708 8201 Bracket
5 9074 478 4425 Pan head self-tapping screw IS P6x19
6 4203 701 6102 Pleated hose
25 4203 708 3402 Blower tube
26 4203 708 3400 Blower tube
27 4203 708 6300 Nozzle
28 4203 701 8300 Nozzle (B)
43 ? 9771 021 3130 Hose clip 65x12
Throttle control handle:
# 4203 790 1302 Control handle
1 4203 790 1102 Handle molding, inner
2 4203 182 0801 Locking lever
3 4203 182 8950 Pin
4 9291 021 3865 Washer 6.1x22x2
5 9322 630 0715 Spring washer 6.2x19x1.2
6 9291 021 3864 Washer 6.1x22x2
7 Locking washer (D)
8 4203 791 0804 1 Handle molding, outer
9 4203 182 1000 Throttle trigger
10 4203 121 2500 Slide
11 4203 442 1600 Contact spring
12 9104 003 0660 Self-tapping screw P4x12
13 4203 791 5200 Bushing
14 4203 180 1111 Throttle cable
4203 440 1102 Short circuit wire
15 Lead 1120mm / 44.1''
0751 010 1110 Lead 10m / 33' (B)
16 0751 030 8207 Terminal socket 4-1
17 0751 030 8404 Terminal socket 6.3-1
18 0751 030 8471 Grommet
19 Hose 780mm / 30 3/4''
4203 711 7201 Hose 960mm / 37 13/16''
20 4203 711 7203 Hose 160mm / 6 5/16''
21 0751 030 8957 Terminal socket 4.8-1/0.8
22 4203 440 1900 Lead 90mm / 3.5''
23 9074 478 3075 Pan head self-tapping screw IS P4x19
24 9074 478 4425 Pan head self-tapping screw IS P6x19
25 ? 9460 624 0501 E-clip 5
Vacuum attachment:
# 4203 007 1003 Vacuum attachment
1 4203 708 8900 Ring 80
2 4203 700 6301 Nozzle
3 4203 500 7000 Diverter flap
4 9460 624 0800 E-clip 8
5 4203 708 9300 Washer
6 1 Lever (D)
7 9052 319 0870 Flat head screw M5x14
8 4203 708 9201 Catch
9 4203 708 7900 Slide
10 9052 319 0670 Flat head screw M4x15
11 4203 708 9601 Connector
12 4203 708 9700 Catcher bag
13 4203 708 9000 Adapter sleeve
14 9771 021 3220 Hose clip 77x12
ULV rotary nozzle:
1 ? 4203 701 1001 Rotor housing
2 ? 4203 700 1300 Distributor cone
3 ? 9646 951 0160 O-ring 4x2
4 ? 4203 700 6500 Propeller
5 ? 4203 708 3101 Tensioning nut
6 ? 4203 708 3102 Union nut
7 ? 4203 708 9505 Hose 3x1x400mm
8 ? 4203 700 1400 Nozzle body
9 ? 9291 929 0120 Washer 5.3
10 ? 9241 226 0700 Cap nut M5
11 ? 9041 116 1050 Pan head screw M5x25
12 ? 9212 260 0700 Hexagon nut M5
13 ? 4203 700 7700 Reducer
14 ? 4203 708 6301 Nozzle 1mm
14 ? 4203 708 6302 Nozzle 0.8mm
14 ? 4203 708 6303 Nozzle 0.58mm
15 ? 4203 700 8801 Strainer
16 ? 4203 708 9506 Hose 8x2x115mm