4. Torque Specifications
4-1
Mounting screws and nuts must be tightened to the specified torque settings listed in the following tables. All
threads must be clean and lubricated with new engine oil before tightening. The cylinder head mounting bolts
must be tightened in the proper sequence, refer to Section
10.
Engine Block Assembl
y. When tightening
torques are not specified, tighten the screws and nuts according to Tables 4-3 and 4-4 on Page 4-2. The
grade numbers are indicated on top of the screw or bolt head.
TABLE 4-1. ENGINE TORQUE SPECIFICATIONS
ITEM POUND - FEET NEWTON - METERS
Air Deflector Bolts 8 - 15 11 - 22
Connecting Rod Bolts 18 -20 24 - 27
Cylinder Head Bolts (Cold)
#1 and #6 12 - 16 16 - 22
#2 thru #5 31 - 37 42 - 50
Cylinder Air Housing Bolts
M6 X 12 5 - 8 7 - 11
M8 X 10, M8 X 16 8 - 15 11 - 20
Gearcase Cover 12 - 16 16 - 22
Governor Lever Bolt 7 12
Intake Elbow Screws 8 - 12 11 - 16
Muffler to Engine (Spec A) 12 - 16 16 - 22
Muffler to Eng. (Begin Spec B) 8 - 11 11 - 15
Muffler to Base (Begin Spec B) 25 lb-in. 3
Oil Base Bolts 10 - 14 14 - 19
Oil Drain Screw 5 - 8 7 - 11
Rocker Arm Adjustment Nut 5 - 8 7 - 11
Spark Plug 7 - 18 10 - 24
Valve Cover 5 - 8 7 - 11
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