MS3992_2004 50000 Engine Specifications Chart Ms3992
User Manual: 50000
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Torque Specifications Model Series Idle Speed Armature Air Gap Valve Clearance Intake Valve Clearance Exhaust Crankshaft Reject Size Valve Guide Reject Gage Flywheel Nut Ft. Lbs. Cylinder Head In. Lbs. Conn. Rod Torque In. Lbs. Crankcase Cover/ Sump In. Lbs. Mag Journal Crankpin Journal PTO Journal Crankshaft End Play Main Bearing Reject Gage Or Reject Dimension Cylinder Bore Standard NOTES L-HEAD ALUMINUM/CAST SLEEVE SINGLE CYLINDER 60000 1750 .006 .010 .005 .007 .007 .009 19122 55 140 100 90 .873 .870 .873 .002 .008 19166 2.374 2.375 80000 1750 .006 .010 .005 .007 .007 .009 19122 55 140 100 90 .873 .996 .873 .002 .008 19166 2.374 2.375 90000 1750 .006 .010 .005 .007 .007 .009 19122 55 140 100 90 .873 .996 .873 *.002 .030 19166 2.5615 2.5625 10A000 thru 10M000 None .006 .010 .005 .007 .007 .009 19122 55 140 100 90 .873 .872 .873 .002 .030 19166 2.5615 2.5625 110000 1750 .006 .010 .005 .007 .007 .009 19122 55 140 100 90 .873 .996 .873 .002 .008 19166 2.7802 2.7812 120000 1750 .006 .010 .005 .007 .007 .009 19122 55 140 100 90 .873 *.996 **1.097 1.060 .002 .030 19166 Mag. 19375 PTO 2.6875 2.6885 * Before 97011300 ** After 97011200 130000 1750 .010 .014 .005 .007 .009 .011 19122 55 140 100 120 .873 .996 .998 *.002 .030 19166 Mag. 19178 PTO 2.5615 2.5625 * Horizontal Threaded Crankshaft − .002 − .008” 170000 1750 .010 .014 .005 .007 .009 .011 19151 65 165 165 140 .997 1.090 1.179 *.002 .030 19178 2.999 3.000 * Horizontal Threaded Crankshaft − .002 − .008” 171700 1750 .010 .014 .005 .007 .009 .011 19151 65 165 165 140 1.179 1.122 1.179 .002 .030 19178 2.999 3.000 190000 1750 .010 .014 .005 .007 .009 .011 19151 65 165 185 140 .997 1.122 1.179 *.002 .030 19178 2.999 3.000 191700 1750 .010 .014 .005 .007 .009 .011 19151 65 165 185 140 1.179 1.122 1.179 .002 .030 19178 2.999 3.000 220000 250000 1750 .010 .014 .005 .007 .009 .011 19151 65 165 185 140 1.376 1.247 1.376 .002 .030 19219 3.4365 3.4375 280000 1750 .010 .014 .005 .007 .009 .011 19151 85 185 * Torque Varies By Type Of Screw See Fig. 1 1.376 1.247 1.376 .002 .023 19219 3.4365 3.4375 ** * Horizontal Crankshaft − .002 − .010” * Horizontal Threaded Crankshaft − .002 − .008” * Both Rod Screws Same Size: Torque to 185 In. Lbs. ** Torque Small Rod Screw First: 160 In. Lbs. Torque Large Rod Screw Second: 260 In. Lbs. L-HEAD CAST IRON SINGLE CYLINDER 230000 1200 .010 .014 .007 .009 .017 .019 19151 145 190 190 90 Mag 190 PTO 1.377 1.1844 1.377 .002 .008 1.382 2.999 3.000 240000 1200 .010 .014 .007 .009 .017 .019 19151 145 190 190 90 Mag 190 PTO Ball 1.3094 Ball .002 .008 Ball 3.0615 3.0625 320000 1200 .010 .014 .007 .009 .017 .019 19151 145 190 190 90 Mag 190 PTO Ball 1.3094 Ball .002 .008 Ball 3.5615 3.5625 *.007 .009 19151 145 160 190 225 1.376 1.622 1.376 **.002 .026 19219 3.4365 3.4375 L-HEAD OPPOSED TWIN CYLINDER 400000 420000 460000 1400 .010 .014 *004 .006 * Clearance With Valve Springs Installed ** Horizontal Crankshaft − .004 − .012” OHV SINGLE CYLINDER 50000 1500 .012 .020 .004 .008 .004 .008 19382 35 250 90 90 Ball .904 Ball .002 .006 Ball 2.047 2.048 85400 1300 .012 .020 .002 .004 .002 .004 19382 45 220 90 175 Ball 1.023 Ball .001 .008 Ball 2.441 2.442 97700 99700 1500 .006 .012 .005 .007 .005 .007 19122 60 160 100 85 .873 1.122 1.060 .002 .034 19166 Mag. 19178 PTO 2.5615 2.5625 115400 117400 118400 1300 .012 .020 .002 .004 .002 .004 19382 45 220 90 175 Ball 1.1803 Ball .001 .008 Ball 2.677 2.678 120000 Horizontal Shaft 1750 .010 .014 .004 .006 .009 .011 19122 60 210 100 110 .878 1.097 1.065 *.002 .033 19166 Mag. 19375 PTO 2.6875 2.6885 120000 Vertical Shaft 1750 .006 .014 .004 .006 .004 .006 19122 60 210 100 110 .878 1.097 .878 .002 .033 19166 Mag. 19375 PTO 2.6875 2.6885 138400 1300 .012 .020 .002 .004 .002 .004 19382 45 220 90 190 Ball 1.1793 Ball .001 .008 Ball 2.677 2.678 185400 1300 .012 .020 .002 .004 .002 .004 19382 60 300 175 175 Ball 1.3368 Ball .001 .008 Ball 3.1496 3.1504 200000 1750 .008 .012 .004 .006 .004 .006 19381 100 220 100 200 1.178 1.2465 1.178 *.002 .030 19380 3.119 3.120 * Threaded Crankshaft:− .002 − .008 210000 Horizontal Shaft 1750 .008 .012 .004 .006 .004 .006 19381 100 220 100 200 1.178 1.2465 1.178 *.002 .030 19380 3.299 3.300 * Threaded Crankshaft: − .002 − .008 210000 Vertical Shaft 1750 .008 .012 .004 .006 .004 .006 19381 100 220 150 180 1.376 1.497 1.623 .002 .023 19219 Mag. 1.629” PTO 3.4365 3.4375 235400, 245400 1300 .008 .012 .004 .006 .004 .006 19382 60 35 Ft. lbs. 175 175 Ball 1.4953 Ball .001 .008 Ball 3.1496 3.1504 280000 1750 .010 .014 .003 .005 .005 .007 19381 100 220 * Torque Varies By Type Of Screw See Fig.1 1.376 1.247 1.376 .002 .023 19219 3.4365 3.4375 1.376 1.497 1.376 .002 .023 19219 3.562 3.563 # 1.179 1.455 1.375 .003 .015 # 19380 Mag. ## 19219 Mag. 19380 PTO 2.677 2.678 310000 1750 ** .010 .014 .003 .005 .005 .007 19381 100 220 150 180 125 165 115 150 * Threaded Crankshaft: − .002 − .009 * Both Rod Screws Same Size: Torque to 185” Lbs. ** Torque Small Rod Screw First: 160 In. Lbs. Torque Large Rod Screw Second: 260 In. Lbs. OHV TWIN CYLINDER 290000, 294000 303000 *1100 **1400 .008 .012 .004 .006 .004 .006 19382 350000 *1100 **1400 .008 .012 .004 .006 .004 .006 19382 *1100 **1400 .008 .012 .004 .006 .004 .006 19382 405000 1750 .008 .012 .004 .006 .004 .006 19381 150 220 100 200 445000 1750 .008 .012 .004 .006 .004 .006 19381 150 220 100 540000 1500 .008 .012 .004 .006 .004 .006 19381 150 30 Ft. Lbs. 125 380000 ## 1.376 125 165 115 150 # 1.179 1.455 1.375 .003 .015 # 19380 Mag. ## 19219 Mag. 19380 PTO 2.835 2.836 1.455 1.375 .003 .015 # 19380 Mag. ## 19219 Mag. 19380 PTO 2.9724 2.973 1.376 1.4965 1.623 .002 .030 19219 Mag. 1.629” PTO 2.969 2.970 200 1.376 1.4965 1.623 .002 .030 19219 Mag. 1.629” PTO 3.119 3.120 200 1.7695 1.6525 1.7695 .002 .012 1.777 3.3655 3.3665 ## 1.376 125 165 115 150 # 1.179 ## 1.376 * White Governed Idle Spring: ** Red Governed Idle Spring: # Before 97050100 ## After 97043000 SUMP SCREW TORQUE Dog Point Integral Washer Loose Washer 140 in. lbs. FORM MS-3992-10/04 E 2004 BRIGGS & STRATTON CORPORATION PRINTED IN U.S.A. Thread Sealant 200 in. lbs. Fig. 1
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