Owner's manual

P71 Series Vertical Shaft Engines
102
Engine torque values chart
Intake lobe base circle diameter 0.3905 9.92 0.3905 9.92
Exhaust lobe rise 0.197 5.00 0.203 5.15
Exhaust lobe base circle diameter 0.3905 9.92 0.3905 9.92
Compression ring end gap 0.006” 0.15 0.010” 0.25
Scraper (second) ring end gap 0.006” 0.15 0.010” 0.25
Compression ring to land clearance 0.001” 0.02 0.002” 0.06
Scraper (second) ring to land clearance 0.001” 0.02 0.002” 0.06
Fastener S.A.E. Metric
Air filter housing base plate screws 27 - 44 in lbs 3 - 5 Nm
Air vane bracket screws 35 - 44 in lbs 4 - 5 Nm
Blower housing nuts 62 - 80 in lbs 7 - 9 Nm
Blower housing studs 80 - 106 in lbs 9 - 12 Nm
Breather cover 62 - 80 in lbs 7 - 9 Nm
Carburetor bowl screw 53 - 80 in lbs 6 - 9 Nm
Carburetor drain bolt 53 - 80 in lbs 6 - 9 Nm
Connecting rod cap bolts 53 - 62 in lbs 6 - 7 Nm
Drain plugs 124 - 150 in lbs 14 - 17 Nm**
Electric starter cover nuts 44 - 62 in lbs 5 - 7 Nm*
Electric starter mounting bracket
screws
80 - 106 in lbs 9 - 12 Nm
Exhaust manifold at head 80 - 106 in lbs 9 - 12 Nm
Fuel tank filler neck nut 89 - 133 in lbs 10 - 15 Nm
Fuel tank screw 62 - 80 in lbs 7 - 9 Nm
Flywheel nut 33 - 41 ft lbs 45 - 55 Nm
Head bolt 221 - 239 in lbs stepped 25 - 27 in 10 NM stepped
Specification Minimum Maximum