Torque Specs

September 17, 2020

updated 2020-12

Contents:

1. General Torque Specs
 Metric Bolts     Stud Bolts     Spark Plugs

2. Moped Torque Specs
    Garelli   Honda   Minarelli   Peugeot
    Puch       Sachs       Tomos     Vespa (Piaggio)

 

Three main things affect the tightening torque:
1) Smaller (thinner) bolts require less torque than big (thicker) ones.
2) Weak (low grade) bolts require less torque than strong (high grade).
3) Bolts with Dry threads require more torque than lubricated ones. 

Torque Units: 1.00 n-m (newton meter) is equal to 0.102 kg-m (kilogram meter), or 0.738 ft-lb (pound foot)
All torques listed here are converted to ft-lb. That allows easy comparison of multiple sources.

 

 

1. General Torque Specs from Internet


x thread  x   4.8 00 4.8   8.8/9.8  8.8/9.8  10.9 0 10.9 0 12.9 0 12.9  ⇐  class (grade)
x thread  x lubed x  dry x  lubed x  dry x   lubed x  dry x lubed x dry 
METRIC BOLTS
x thread  x
 ft-lbs x ft-lbs   ft-lbs     ft-lbs    ft-lbs x ft-lbs   ft-lbs   ft-lbs 0
 hex sizes
0M4-0.70    0.7 00 0.8 00  1.7 00   2.3 01   2.4 01 
3.2 11 2.8 01 3.8 01 0
0M5-0.80    1.3 00 1.8 00  3.4 01   4.5 01   4.9 01  6.5 01 5.7 01 7.6 01 08  

0M6-1.00    3.5 00 4.5 00  6.5 01   8.5 01   9.5 01  12.0  11.50  12.501  09 10 
0M7-1.00    6.0 00 8.0 00  11.20    13.20    17.01   21.01  18.01  22.01  10 11  
0M8-1.25    8.5 00 11.5 0  16 00    20 00    24 01   30 01  25 01  28 01  12 13 14
M10-1.50    17  00 21  01  32 00    40 00    47 01   60 01  55 01  70 01  14 15 17
M12-1.75    29  00 39  01  55 00    70 00    80 0   140 01  95 0  120 01  17 19
M14-2.00    47  00 60  01  88   110 0    130 0   165 0  150 0  190 01  19 21

 

 


x thread  x alum. x alum.  steel x steel   STUD BOLTS threaded into
x thread  x lubed x  dry x  lubed x dry   
aluminum or steel (iron)
x
thread  x
 ft-lbs x ft-lbs   ft-lbs   ft-lbs  0
 hex sizes
0M4-0.70    1.0 00 1.3 00 1.5 00 2.0 01 0
0M5-0.80    00.11  00.11   00.01  00.01  08  

0M6-1.00    04.01  05.01   06.01  08.01  09 10 
0M7-1.00    07.01  09.00   10.00  13.00  10 11  
0M8-1.25    09.00  12.00   14.00  18.00  12 13 14
M10-1.50    18.00  24.00   28.00  37.00  14 15 17
M12-1.75    32.00  43.00   49.00  65.00  17 19
M14-2.00    51.00  68.00   78.0  104.00  19 21

 


M10 – 1.00 000M12 – 1.25 000M14 – 1.25  
alum 0 iron  000 alum 0 iron  000 alum 0 iron 
head 0 head 000 head 0 head ooo head o head

ft-lbs x ft-lbs x0  ft-lbs x ft-lbs x0  ft-lbs x ft-lbs   SPARK PLUGS
07-9 x 07-11 00 11-15   11-18 18-22   18-25

 

 

Moped Torque Specs from Service Manuals

Here blue text means engine and black text is non-engine. 


xmm-0.0..0 ft-lbs  1979 torque specifications  GARELLI
0M6-0.0  0.0-5.8  side cover screws
0M6-0.0  0.0-5.8  crankcase screws
0M7-0.0  0.-10.9  head nuts
0M9-0.0   
22-25  H-cyl. flywheel nut
M10-0.0    22-25  V-cyl. flywheel nut
M12-0.0    25-29  clutch nut

M14-0.0    43-47  sprocket nut
M14-0.0    58-61  V-cyl. countershaft nut


xmm-0.0..0 ft-lbs  1979 torque specifications  HONDA Express
0M6-0.0  6.5-8.7  head nuts
M10-0.0    21-25  clutch nut
M10-0.0    22-29  pivot shaft nut
M12-0.0    00-00  rear wheel nut

xmm-0.0..0 ft-lbs  1975 torque specifications  HONDA PC50
0M5-0.0  5.1-8.0  valve adjust nuts
0M6-0.0  5.8-8.7  valve cover nuts

0M6-0.0  6.5-8.7  head nuts
0M6-0.0  5.1-8.7  case and cover bolts
0M6-0.0  6.5-8.7  camshaft and intake bolts
M10-0.0    22-28  flywheel and clutch nuts
M12-0.0    15-22  oil drain plug

 


xmm -0.00 ft-lbs   1978 torque specifications  MINARELLI
0M4-0.0  1.3-1.5  V1 clutch lever pinch bolt #5130
0M6-0.0  3.6-4.3  V1 oil check and drain plugs
0M6-8.8  7.3-8.7  V1 case and side cover bolts, head nuts #5550
0M6-8.8  7.3-8.0  V1 intake bolts #5610, start leaf screw #5840
0M9-0.0  0- 21.7  V1 cone clutch nut #6270
M10-0.0    32-33  V1 sprocket #4840
M10-0.0    33-35  V1 flywheel nut #4750


xmm -0.00 ft-lbs  1977 torque specifications  PEUGEOT
0M6-6.8    00-0103 case bolts
0M6-8.8    00-0103 case bolts
M10-0.0    00-18  103 flywheel nut (16 hex)
M11-0.0    00-25  103 clutch nut (21 hex)
M20-0.0    00-32  103 variator nut (32 hex)


xmm-0.00 ft-lbs  1980 torque specifications  PUCH
0
M5
-0.0  00-04  Fender bolts
0M6-0.0  00-05  Pedal pin nuts
0M6-0.0  00-0Crankcase  and clutch cover screws, Kickstand  and manifold bolts
0M6-0.0  00-0Cylinder head nuts
0M7-0.0  10-12  Handlebar bolts
0M8-0.0  00-09  Rear shock bolts
0M8-0.0  00-11  Fork top bolts
0M8-8.8  00-29  Swing arm bolts
0M8-8.8  00-23  Engine mounting bolts
M10-0.0  00-25  Flywheel nut
M10-0.0  00-20  Clutch nut 1 speed
M10-8.8  00-40  Fork clamp bolts (Magnum MkII)
M11-0.0  00-20  Front axle nuts
M12-0.0  00-20  Rear axle nuts
M12-0.0  25-36  Countershaft 2 speed nut
M16-0.0  21-24  Clutch nut 2 speed
M24-0.0  00-20  Fork top plugs (Magnum MkII)
M26-0.0  00-30  Steering head nut


xmm-0.0..0 ft-lbs  1977 torque specifications  SACHS
0M4-0.0  2.2-3.0  stator screws
0M6-0.0  5.9-7.4  cylinder nuts

0M6-8.8  7.4-8.8  case screws
0M8-0.0   
17-20  504 flywheel nut
M10-0.0    27-30  505 flywheel nut, clutch nut
M12-0.0    37-44  sprocket nut


xmm-0.00 ft-lbs  1988 torque specifications  TOMOS
0M6-0.0  00-0A3 Engine cover screws
0M7-0.0  00-0A3 Cylinder head nuts
0M8-8.8  00-18  Engine mount bolts
M10-0.0  00-22  A3 Flywheel nut
M10-0.0  00-18  A3 Clutch nut, rear shock bolts
M11-0.0  00-24  Axle nuts
M12-8.8  00-26  Swing arm bolt, fork top bolts
M14-0.0  00-13  Spark plug
M14-0.0  00-59  A3 Countershaft nut
M22-0.0  00-44  A3 Sprocket nut


xmm -0.0 ft-lbs  1970 torque specifications  VESPA
0M8-0.0  10-24  Fixed pulley nut 13 hex

0M8-0.0  14-18  Crankshaft nut, Variator pulley nut
M10
-8.8  26-39  Rear wheel mount bolts 17 hex
M11-0.0  28-30 
Ciao front axle nut 17 hex
M14-0.0  40-43 
Freewheel hub nut 36 hex
M25-0.0  22-29 
Ciao steering nut 32 hex