2000 Polaris Indy 500 / 600 snowmobile service manual, Page 63Get this manual
ENGINES Torque Specifications When tightening bolts, nuts, or screws, torque pattern should be followed to ensure uniform equal tension is applied to all fastenersProper torque application prevents fasteners from loosening or breaking in critical serviceIt also minimizes wear and eliminates premature or needless repair costsFollowing uniform torque application sequence patterns ensures optimum performance from precision machined, close tolerance assembliesThe most common units of torque in the English system are ftlband inlbIn the Metric system, torque is commonly expressed in units of kg-m or Nm (Newton Meters)Multiply foot pounds by .1383 to obtain kg-mMove decimal point one place to the right to obtain Nm from kg-mSee page 3.2 for engine torque sequencesEngine EC50 EC58PL SN50 Cylinder Head 18-19.5 ft.lbs(2527 Nm) 17-20 ftlbs(24-28 Nm) 20-24 ft.lbs(2933 Nm) Cylinder Base Nuts 27-31 ft.lbs (37-43 Nm) 24-28 ftlbs(33-39 Nm) 30-34 ft.lbs (41-47 Nm) Crankcase mm 17-18 ft.lbs(2223 Nm) 17-18 ftlbs(22-23 Nm) 20-24 ft.lbs(2833 Nm) Crankcase 10 mm 23-25 ft.lbs(3235 Nm) 23-25 ftlbs(32-35 Nm) NA Flywheel 60-65 ftlbs(83-90 Nm) 60-65 ftlbs(83-90 Nm) 90 ftlbs(124 Nm)