Specifications

9
Location
Inch lbs.
Torque
Nm Engine Designation
Aluminum Light Frame Engines TVS TNT ECV LAV H/HSK HS/HSSK/ LH OVRM. OV VLV LEV / LV OHH / OH
Rocker Arm Stud Lock Nut 100-140 11-16
 
Connecting Rod 95-110 11-12.5
         
Cylinder Head 160-210 18-24
    
Cylinder Head 220-240 25-27
 
Cylinder Head 180-220 20.5-25

Mounting Flange or Cylinder Cover 100-130 11-14.5
         
Flywheel Nut (Cast Iron) 500-600 42-50
         
Flywheel Nut (Aluminum) 400-500 45-56.5
         
TORQUE SPECIFICATIONS
Four Cycle Engines
NOTES
Torque specifications listed should not be confused with the torque value observed on engines which have been
run.
The torque specifications take relaxation into account so sufficient clamping force exists after an engine has reached
operating temperature.
Torques listed are intended to cover highly critical areas. More extensive torques are found in the respective repair
manual.
Four Cycle Light Frame Engine Series
(TVS, TNT, ECV, LAV, LH, LV, LEV, H, HS, OH, OHH, OV, OVRM, VLV and VSK)
Location
Inch lbs.
Torque
Nm Engine Designation
Aluminum Medium Frame Engines TVM125, 140 H50-60 V70 H70 TVM & TVXL 170-195-220 HM/HMSK70-100 LH318 - 358 OVM/OVXL, OHV120-125 OHSK80-130 OHM120, OH318-358 OHV11-13,OHV110- 135, 206 Series OHV135-145 / OV358 203 Series OHV15-18 / OV490 204 Series
Connecting Rod 160-180 18-20.5
 
Connecting Rod 200-220 22.5-25
      
Connecting Rod 200-240 22.5-27

Cylinder Head Bolts 220-240 25-27
 
Cylinder Head Bolts 180-240 20.5-27
 
Cylinder Head Bolts 160-210 18-24
     
Rocker Adj. Lock Screw 65-80 7-9

Rocker Arm Stud Lock Nut 110-130 12.5-14.5

Rocker Arm Hex Jam Nut 15-20 2
 
Rocker Arm Studs 170-210 19-24
  
Rocker Arm Box to Head 75-130 8.5-14.5
 
Rocker Box Cover 15-20 2
 
Rocker Box Cover (Four Screw) 40-65 4.5-7
  
Mounting Flange or Cylinder Cover 100-130 11-14.5
   
Mounting Flange or Cylinder Cover 110-140 12.5-16
     
Flywheel Nut 400-550 45-62
   
Flywheel Nut (External Ignition) 600-800 68-90
     
Four Cycle Medium Frame Engine Series
(TVM, TVXL, H, V, HM, LH, OH, OVM, OVXL, OHM, OHSK, OV and OHV)
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