T65 Series Vertical Shaft Engines
98
Engine specifications chart
Engine torque values chart
NOTE: * - Apply a small amount of releasable thread locking compound such as Loctite® 242 (blue).
New Min New Max
Inch Metric Inch Metric
Bore 2.559 65.005 2.600 65.015
Crankpin diameter 0.905 22.984 0.905 22.993
Connecting rod ID (crank side) 0.906 23.010 0.906 23.020
Connecting rod ID (piston side) 0.520 13.204 0.520 13.212
Piston pin diameter 0.519 13.192 0.520 13.200
Piston pin bore 0.520 13.202 0.520 13.208
Cam shaft base circles 0.433 11.000 0.433 11.000
Intake lobe height 0.220 5.606 0.221 5.616
Exhaust lobe height 0.220 5.606 0.221 5.616
Intake valve lash 0.004 0.100 0.006 0.150
Exhaust valve lash 0.006 0.150 0.008 0.200
Spark plug gap 0.024 0.600 0.031 0.800
Module air gap 0.012 0.300 0.020 0.500
Fastener Torque SAE Metric
Blower housing studs 89 in lbs (10 Nm) 89 in lbs (10 Nm)
Connecting rod cap bolts
53 - 62 in lbs.* 6 - 7 Nm
Drain plug
106 - 124 in lbs 12 - 14 Nm
Flywheel nut 48 - 52 ft lbs 64 - 70 Nm
Head bolt 20 - 22 ft lbs (step) 28 - 30 Nm
Module 80 - 106 in lbs 9 - 12 Nm
Muffler 80 - 106 in lbs 9 - 12 Nm
Rocker jam nut 80 - 106 in lbs 9 - 12 Nm
Spark plug 15 - 19 ft lbs 20 - 25 Nm
Sump bolts 80 - 106 in lbs 9 - 12 Nm
Valve cover 62 - 80 in lbs 7 - 9 Nm
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