Complete NSR 250 Torque Settings
Foot Pounds included by popular demand

Finally some translations of the NSR 250 service manual from Japanese into English. Special thanks to Joe Lippo for all his efforts and hard work. There will be more and more updates as the NSR 250R service manual is slowly and carefully translated. Stay tuned !!

Not sure which NSR model you have ? Check out the quick reference model list to find out.

MC16 MC18 MC21 MC28

Select your type of NSR 250R above. If you can not find your desired torque setting for your specific model of NSR then please refer to the MC16 torque settings. MC 16 torque settings shall be used as the default where the only differences are listed below in other model ranges ( MC18, MC21 and MC28 ) Torque settings are listed both in Kilogram-meters ( Kg-m ) and Foot pounds ( Ft-lbs ) for your convenience.

MC16 Torque Settings

Item
Quantity
Diameter
Kg-m
Ft-lbs
Engine
Min - Max
Min - Max
Spark Plug
2
14mm
1.5 - 2.0
10.8 - 14.5
Cylinder Head Nut
12
7mm
1.2 - 1.6
8.7 - 11.6
Cylinder Nut
8
8mm
2.3 - 2.7
16.6 - 19.5
Clutch Lock Nut
1
18mm
5.5 - 6.5
39.8 - 47.0
Shift Drum/Stopper Arm
1
6mm
0.8 - 1.2
5.8 - 8.7
Shifter Pin (locking agent)
1
8mm
2.1 - 2.5
15.2 - 18.1
AC Generator flywheel bolt
1
10mm
8.0 - 9.0
57.9 - 65.1
AC Generator stator bolt
3
6mm
1.0 - 1.4
7.2 - 10.1
Crankcase Bolt
6
8mm
2.1 - 2.5
15.2 - 18.1
Primary Drive Gear Bolt
1
10mm
9.0 - 10.0
65.1 - 72.3
Neutral Switch
1
10mm
1.4 - 1.8
10.1 - 13.0
Clutch Lifter Arm Stop Bolt
1
6mm
0.8 - 1.2
5.8 - 8.7
Water Pump Impeller
1
14mm
1.0 - 1.4
7.2 - 10.1
AC Generator flywheel bolt
1
10mm
8.0 - 9.0
57.9 - 65.1
RC Valve Shifter Nut
2
6mm
0.8 - 1.0
5.8 - 7.2
Cylinder Head bypass tube joint
1
6mm
0.25 - 0.45
1.8 - 3.25
Frame
Front Axle Pinch Bolt
4
7mm
1.5 - 2.0
10.85 - 14.5
Front Axle Bolt
1
14mm
5.5 - 6.5
39.8 - 47.0
Rear Axle Nut
1
16mm
8.0 - 10.0
57.9 - 72.3
Engine Hanger Plate Bolt
4
8mm
2.4 - 3.0
17.4 - 21.7
Engine Hanger Bolt
3
10mm
4.5 - 5.5
32.5 - 39.8
Side Stand Bolt
1
10mm
1.0 - 2.0
7.2 - 14.5
Side Stand Lock Nut
1
10mm
3.0 - 4.0
21.7 - 28.9
Side Stand Bracket Bolt
2
8mm
2.4 - 3.0
17.35 - 21.7
Sub Frame Bolt
4
10mm
3.5 - 4.5
25.3 - 32.5
Step Stay Bolt
4
8mm
2.4 - 3.0
17.35 - 21.7
Rear Brake Reservoir Bolt
1
6mm
0.7 - 1.1
5.1 - 7.95
Rear Brake Master Cylinder Bolt
2
6mm
1.0 - 1.4
7.2 - 10.1
Exhaust Chamber Pinch Bolt
2
8mm
2.4 - 3.0
17.35 - 21.7
Silencer Pinch Bolt
2
8mm
2.4 - 3.0
17.35 - 21.7
Chamber/Silencer Joint Bolt
6
6mm
1.0 - 1.4
7.2 - 10.1
Shifter Pedal Bolt
1
6mm
1.0 - 1.4
7.2 - 10.1
Kick Starter Pedal Bolt
1
8mm
3.5 - 4.5
25.3 - 32.5
Fairing (cowl) Stay Bolt
2
8mm
2.4 - 3.0
17.35 - 21.7
Fairing Sub Stay Bolt
4
6mm
1.0 - 1.4
7.2 - 10.1
Handlebar Bolts
2
8mm
2.4 - 3.0
17.35 - 21.7
Main Switch Bolts
2
8mm
2.4 - 3.0
17.35 - 21.7
Seat Bolts
1
8mm
2.0 - 2.4
14.5 - 17.35
Fuel Cock
1
22mm
2.0 - 2.3
14.5 - 16.6
Clutch Lever Bracket Bolt
2
6mm
0.7 - 1.1
5.1 - 7.95
Rear Fork Pivot Bolt
1
14mm
6.0 - 7.0
43.4 - 50.6
Rear Fork Pivot Lock Nut
1
26mm
6.0 - 7.0
43.4 - 50.6
Rear Fork Pivot Adjust Bolt
1
26mm
1.0 - 2.0
7.2 - 14.5
Steering Stem Nut
1
24mm
9.0 - 12.0
65.1 - 86.8
Steering Adjustment Nut
1
26mm
2.3 - 2.7
16.6 - 19.5
Top Bridge Bolt
2
7mm
0.9 - 1.3
6.5 - 9.4
Bottom Bridge Bolt
2
10mm
4.5 - 5.5
32.5 - 39.8
Front Brake Bracket Caliper Bolt
4
8mm
2.4 - 3.0
17.35 - 21.7
Front Brake Master Cylinder Bolt
2
6mm
1.0 - 1.4
7.2 - 10.1
Brake Hose Bolt
5
10mm
2.5 - 3.5
18.1 - 25.3
Front Axle Hose Stay Bolt
3
6mm
1.0 - 1.4
7.2 - 10.1
Front Brake Pipe
2
10mm
1.6 - 1.8
11.6 - 13.0
Bleeder Valve Bolt
3
7mm
0.4 - 0.7
2.9 - 5.1
Cushion Conrod Bolt (Frame)
1
10mm
6.0 - 7.0
43.4 - 50.6
Cushion Conrod Bolt (Cushion Arm)
1
10mm
6.0 - 7.0
43.4 - 50.6
Cushion Arm Bolt
1
10mm
6.0 - 7.0
43.4 - 50.6
Rear Cushion Upper Bolt
1
12mm
6.0 - 7.0
43.4 - 50.6
Rear Cushion Lower Bolt
1
10mm
6.0 - 7.0
43.4 - 50.6
Front Brake Disc Bolt
6
6mm
1.4 - 1.6
10.1 - 11.6
Front Fork Socket Bolt
2
8mm
1.5 - 2.5
10.85 - 18.1
Front Fork Bolt
2
35mm
1.5 - 3.0
10.85 - 21.7
Driven Sprocket Nut
6
8mm
2.8 - 3.4
20.25 - 24.6
Rear Cushion Lower Joint Locknut
1
12mm
6.0 - 7.5
43.4 - 54.25
Rear Cushion Lower Joint
1
12mm
3.8 - 6.0
27.5 - 43.4
Rear Brake Disc Bolt
3
8mm
3.7 - 4.3
26.8 - 31.1
Front Brake Hanger Pin
4
10mm
1.5 - 2.0
10.8 - 14.5
Rear Brake Hanger Pin Retainer Bolt
1
6mm
0.8 - 1.3
5.8 - 9.4
Rear Caliper Pin Bolt
1
10mm
2.4 - 3.0
17.35 - 21.7
Clutch Lock Nut
1
18mm
5.5 - 6.5
39.8 - 47.0

(1988) MC18 Torque Settings
If the torque settings you are looking for are not listed below then please refer to MC16 settings above.

Item
Quantity
Diameter
Kg-m
Ft-lbs
Engine
Min - Max
Min - Max
Clutch Lock Nut
1
20mm
8.0 - 9.0
57.9 - 65.1
AC Generator flywheel bolt
1
10mm
7.0 - 9.0
50.6 - 65.1
Oil Drain Bolt
1
10mm
1.5 - 2.5
10.85 - 18.1
Clutch Lifter Arm Stop Bolt
1
6mm
0.8 - 1.2
5.8 - 8.7
Cylinder Head Bolt
1
6mm
0.6 - 0.8
4.3 - 5.8
Frame
Front Axle Pinch Bolt
4
8mm
1.8 - 2.5
13.0 - 18.1
Rear Axle Nut
1
18mm
9.0 - 11.0
65.1 - 79.6
Engine Hanger Adjuster
1
20mm
1.0 - 2.0
7.2 - 14.5
Engine Hanger Adjuster Lock Nut
1
20mm
6.0 - 7.0
43.4 - 50.6
Handlebar Bolts
4
6mm
1.0 - 1.4
7.2 - 10.1
Front Brake Caliper Bolt
4
8mm
2.4 - 3.0
17.35 - 21.7
Front Brake Caliper Torque Bolt
8
8mm
3.0 - 3.5
21.7 - 25.3
Front Brake Disc Bolt
12
6mm
1.4 - 1.6
10.1 - 11.6
Driven Sprocket Bolt
5
10mm
5.0 - 6.0
36.2 - 43.4
Brake Pad Hanger Pin
3
10mm
1.5 - 2.0
10.8 - 14.5
Brake Pad Hanger Pin Plug
3
10mm
0.2 - 0.3
1.45 - 2.2
Brake Hose Joint Nut
2
10mm
1.2 - 1.5
8.7 - 10.85
Brake Hose Joint
2
10mm
2.5 - 3.5
18.1 - 25.3
Cushion Arm Plate Nut
4
10mm
4.5 - 5.5
32.5 - 39.8
Rear Cushion Spring Adjuster Nut
1
54mm
8.0 - 10.0
57.9 - 72.3
Drive Chain Slide Piece
1
5mm
0.35 - 0.5
2.5 - 3.6
Step Pivot Bolt
2
10mm
3.5 - 4.5
25.3 - 32.5
Engine Hanger Bolt
3
10mm
3.5 - 4.5
25.3 - 32.5
Engine Hanger Link Bolt
1
12mm
5.0 - 6.0
36.2 - 43.4

(1989) MC18 Type II R5K (Non SP) Torque Settings
If the torque settings you are looking for are not listed below then please refer to MC16 settings above.

Item
Quantity
Diameter
Kg-m
Ft-lbs
Engine
Min - Max
Min - Max
Refer to 1988 MC18 Torque Settings above for Engine settings since they are identical.
Frame
Front Disc Pinch Bolt
12
6mm
1.8 - 2.2
13.0 - 15.9
Torque Rod Pinch Bolt (frame)
1
10mm
3.0 - 4.0
21.7 - 28.9
Torque Rod Pinch Bolt (caliper)
1
10mm
3.0 - 4.0
21.7 - 28.9
Brake Hose Clamp Bolt
4
6mm
1.0 - 1.4
7.2 - 10.1
Driven Sprocket Bolt
5
10mm
7.0 - 8.0
50.6 - 57.9
Rear Brake Disc Pinch Bolt
3
8mm
4.0 - 4.5
28.9 - 32.55
Rear Axle Nut
1
18mm
8.5 - 10.5
61.5 - 75.95

(1989) MC18 Type II R6K SP Torque Settings
If the torque settings you are looking for are not listed below then please refer to MC18 settings above, if you still can not find them, please refer to MC16 Torque Settings at the top.

Item
Quantity
Diameter
Kg-m
Ft-lbs
Engine
Min - Max
Min - Max
Clutch Center Lock Nut
1
20mm
9.0 - 10.0
65.1 - 72.3
Clutch Outer Pinch Bolt
6
7mm
2.1 - 2.5
15.2 - 18.1
Frame
Refer to 1989 MC18 Type II R5K ( Non SP model, wet clutch ) Torque Settings above for Frame settings since they are identical.

MC21 Torque Settings
If the torque settings you are looking for are not listed below then please refer to MC16 settings above.

Item
Quantity
Diameter
Kg-m
Ft-lbs
Engine
Min - Max
Min - Max
Cylinder Head Nut
12
8mm
2.0 - 2.4
14.5 - 17.35
Cylinder Stud Bolt
12
8mm
0.8 - 1.2
5.8 - 8.7
Crankcase Stud Bolt
8
8mm
0.8 - 1.2
5.8 - 8.7
Shifter Drum Bolt
8
8mm
2.1 - 2.5
15.2 - 18.1
Transmission Oil Pump Bolt
3
6mm
0.7 - 1.1
5.1 - 7.95
Frame
Side Stand Pivot Bolt
1
10mm
3.0 - 4.0
21.7 - 28.9
Fairing Stay Bolt
2
8mm
2.4 - 3.0
17.35 - 21.7
Radiator Lower Mount Stay Nut
2
8mm
1.8 - 2.5
13.0 - 18.1
Top Bridge Bolt
2
8mm
2.0 - 2.5
14.5 - 18.1
Front Fork Piston Rod Lock Nut
2
10mm
1.8 - 2.2
13.0 - 15.9
Step Pivot Bolt
2
10mm
3.5 - 4.5
25.3 - 32.55
Driven Sprocket Bolt
5
10mm
7.0 - 8.0
50.6 - 57.9
Front Brake Disc Bolt
12
6mm
1.8 - 2.2
13.0 - 15.9
Rear Brake Disc Bolt
3
8mm
4.0 - 4.5
28.9 - 32.55
Rear Brake Hose Clamp Bolt
3
6mm
1.0 - 1.4
7.2 - 10.1
Rear Caliper Pin Bolt
1
10mm
2.5 - 3.0
18.1 - 21.7
Rear Caliper Bolt
1
8mm
2.5 - 3.0
18.1 - 21.7
Silencer Joint Bolt
6
6mm
1.4 - 1.8
10.1 - 13.0
Fuel Cock Pinch Bolt
1
22mm
3.0 - 4.0
21.7 - 28.9
Radiator Lower Mount Stay Nut
2
8mm
2.0 - 2.4
14.5 - 17.35
Shift Change Pedal Bolt
1
6mm
1.4 - 1.8
10.1 - 13.0

MC28 Torque Settings
Finally complete MC28 Torque settings by yours truly.

Item
Quantity
Diameter
Kg-m
Ft-lbs
Engine
Max
Max
Spark plugs
2
14mm
1.8
13.0
Transmission Drain Bolt
1
10mm
3.5
25.3
Oil pump cable control lock nut
2
8mm
1.1
7.95
Water pump impeller
1
7mm
1.2
8.7
Cylinder head nut
12
8mm
2.2
15.9
Cylinder nut
8
8mm
2.5
18.1
RC Valve control cable pulley nut
2
6mm
0.9
6.5
Cylinder stud bolt
16
8mm
1.0
7.2
Clutch center lock nut ( NSR 250R )
1
20mm
8.5
61.5
Clutch center lock nut ( NSR 250R SE, SP )
1
20mm
9.5
68.5
Shift drum center bolt
1
8mm
2.3
16.6
Gear shift spindle return spring pin
1
8mm
1.0
7.21
Primary drive gear bolt
1
10mm
9.5
68.5
Clutch lift arm bolt
1
6mm
1.0
7.21
Clutch outer bolt ( SE and SP only )
6
7mm
2.3
16.6
Oil pump attachment bolts
3
6mm
0.9
6.49
Crankcase bolt
4
6mm
1.2
8.7
Crankcase bolt
6
8mm
2.3
16.6
Crankcase stud bolt
8
8mm
1.0
7.21
AC Generator stator bolt
3
6mm
1.2
8.7
Flywheel bolt
1
10mm
8.0
57.9
Exhaust chamber joint nut
4
8mm
2.8
20.2
Exhaust chamber mount bolt
2
8mm
2.2
15.9
Muffler joint bolt
6
6mm
1.6
11.5
Muffler mount bolt
2
8mm
2.2
15.9
Frame, fairings, cooling and fuel
Max
Max
Step holder bolt (rear sets)
4
8mm
2.6
18.74
Step bolt
2
8mm
4.0
28.9
Tandem step holder bolt
4
8mm
2.6
18.74
Side stand pivot bolt
1
10mm
1.0
7.21
Side stand bracket bolt
2
8mm
2.6
18.74
Sub Frame bolt
3
10mm
4.0
28.9
Upper Fairing stay bolt
2
8mm
2.6
18.74
Upper Fairing sub-stay bolt
2
6mm
0.9
6.49
Seat mount bolt
1
8mm
2.2
15.9
Radiator stay nut
2
8mm
2.2
15.9
Thermo sensor
1
-
0.9
6.49
Fuel cock
1
22mm
3.5
25.2
Fuel tank cap
7
4mm
0.3
2.16
Engine mounts, clutch and gear linkage, kicker
Front engine mount bolt
1
10mm
4.0
28.9
Rear engine mount bolt (lower)
1
10mm
4.0
28.9
Rear engine mount (upper)
1
10mm
4.0
28.9
Engine mount adjust bolt
1
20mm
1.5
10.8
Engine mount adjust bolt lock nut
1
20mm
6.5
46.9
Engine stopper link bolt
1
12mm
5.5
39.7
Clutch lever holder bolt
2
6mm
0.9
6.49
Gear shift arm pinch bolt (linkage)
1
6mm
1.6
11.5
Kick starter arm pinch bolt
1
8mm
4.0
28.9
Wheels
Front axle bolt
1
14mm
6.0
43.3
Front axle holder bolt
2
8mm
2.2
15.86
Front brake disc bolt (NSR 250R, SE)
12
6mm
2.0
14.4
Front brake disc nut (SP model only)
6
6mm
2.0
14.4
Rear axle nut
1
18mm
12.0
86.5
Driven flange lock nut
1
38mm
20.5
147.8
Drive pin bolt
4
7mm
1.5
10.8
Driven sprocket nut
4
8mm
3.4
24.5
Rear brake disc nut
4
8mm
3.4
24.5
Front Suspension
Steering stem nut
1
24mm
10.5
75.7
Top thread collar
1
26mm
2.5
18.0
Top thread lock nut
1
26mm
-
-
Handle bar pinch bolt
4
6mm
1.2
8.65
Top clamp pinch bolt
2
8mm
2.3
16.6
Bottom ( triple ) clamp pinch bolt
2
10mm
5.0
36.0
Forks
Fork oil drain bolt
2
6mm
0.8
5.8
Fork socket bolt
2
8mm
2.0
14.4
Fork cap bolt
2
37mm
2.3
16.6
Rear Suspension
Swing arm pivot nut
1
18mm
9.5
68.5
Swingarm pivot adjuster bolt lock nut
1
30mm
8.0
57.7
Swingarm pivot adjuster bolt
1
30mm
1.5
10.8
Bearing holder pinch bolt
1
14mm
5.5
39.65
Rear cushion upper mount nut
1
12mm
6.5
46.9
Rear cushion lower mount nut
1
10mm
5.0
36.0
Cushion conrod nut
2
10mm
5.0
36.0
Cushion arm bolt (Swingarm side)
1
10mm
5.0
36.0
Drive chain slider screw
4
5mm
0.9
6.5
Frame
Front brake caliper mount bolt
4
8mm
3.1
22.4
Caliper Torque bolt
8
8mm
3.3
23.8
Pad pin plug
3
10mm
0.25
1.8
Pad pin
3
10mm
1.8
13.0
Caliper bleeder screw
3
8mm
0.6
4.3
Brake hose oil bolt
4
10mm
3.5
25.2
Rear brake caliper mount bolt
2
8mm
3.0
21.6
Rear caliper pin bolt
1
8mm
1.3
9.4
Rear caliper pin bolt " A "
1
8mm
2.3
16.6
Front master cylinder holder bolt
2
6mm
1.2
8.7
Front master cylinder cap screw
2
4mm
0.15
1.0
Front master cylinder reservoir stay bolt
1
6mm
1.2
8.7
Front brake switch screw
1
4mm
0.12
0.87
Front brake lever pivot bolt
1
6mm
0.1
0.721
Front brake lever pivot nut
1
6mm
0.6
4.3
Front brake lever adjuster socket bolt
1
5mm
0.4
2.9
Brake pipe flare nut
2
10mm
1.7
12.3
Rear master cylinder mount bolt
2
6mm
1.2
8.7
Rear master cylinder reservoir mount bolt
1
6mm
1.2
8.7
Rear master cylinder push rod lock nut
1
8mm
1.8
13.0
Rear master cylinder reservoir joint screw
1
4mm
0.15
1.0
Meter
Meter attachment bolt
3
6mm
0.4
2.9

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DISCLAIMER: This is an unofficial transcript, and in no way constitutes a change from the Honda Manual. If there is any disparity between this list and the Honda Manual, the Honda settings should be used. The fact that these pages were transcribed by humans means that there may very well be errors. This List may not be all inclusive!!! Should you use this list of settings, you must not assume that they are gospel. Even though they were taken directly from the Honda Manual, I cannot be held accountable if you screw the pooch while working on your NSR. Use common sense. If the settings above suggest that you tighten a 4mm screw to 90ft lbs of torque, it most likely isn't correct! I hope this begins to clear some of the haze surrounding the maintenance of our beautiful machines, but like I said, don't blame me if your bike doesn't behave with these settings. ( Joe Lippo )