It has an 88.9 mm (3.5 in) cylinder bore and 69.8 mm (2.75 in) piston stroke. The Tecumseh HH160 engine produced 16.2 PS (11.9 kW; 16 HP) at 3,600 rpm of maximum output power.
| Cylinder block |
| Compression ratio: |
– |
| Cylinder bore: |
88.9 mm (3.5 in) |
| Piston stroke: |
69.8 mm (2.75 in) |
| Cylinder internal diameter (standard): |
88.9000-88.9250 mm (3.5-3.501 in) |
| Piston skirt outer diameter (standard): |
88.7730-88.8240 mm (3.495-3.497 in) |
| Number of piston rings (compression / oil): |
2/1 |
| Piston pin diameter: |
17.4650-17.4750 mm (0.6876-0.688 in) |
| Side clearance ring groove (Top): |
0.038-0.089 mm (0.0015-0.0035 in) |
| Side clearance ring groove (Second): |
0.038-0.089 mm (0.0015-0.0035 in) |
| Ring end gap (Top): |
0.254-0.508 mm (0.01-0.02 in) |
| Ring end gap (Top): |
0.254-0.508 mm (0.01-0.02 in) |
| Crankpin journal diameter: |
34.925-34.938 mm (1.375-1.3755 in) |
| Carnkshaft seat diameter for roller bearings: |
30.137-30.150 mm (1.186-1.187 in) |
| Crankshaft center distance: |
34.9 mm (1.375 in) |
| Cylinder head |
| Valve arrangement: |
OHV, gear driven |
| Valves: |
2 |
| Valve seat angle: |
46° |
| Valve seat width: |
1.067-1.321 mm (0.0420-0.052 in) |
| Valve face angle: |
45° |
| Valve lip width: |
1.524 mm (0.060 in) |
| Valve face width: |
3.378 mm (0.1330 in) |
| Valve spring free length (INTAKE): |
50.292 mm (1.98 in) |
| Valve spring free length (EXHAUST): |
50.292 mm (1.98 in) |
| Tightening torque specs |
| Connecting rod screw or nut |
20.3-27.1 Nm (15.0-20.1 ft-lbs) |
| Mounting flange cylinder cover screw |
9.7-12.4 Nm (7.2-9.2 ft-lbs) |
| Cylinder cover flywheel end |
11.3-14.7 Nm (8.4-10.9 ft-lbs) |
| Flywheel nut |
13.6-18.1 Nm (10.1-13.4 ft-lbs) |
| PTO shaft to flywheel |
67.8-74.6 Nm (50.2-55.3 ft-lbs) |
| Spark plug |
11.3-14.1 Nm (8.4-10.4 ft-lbs) |
| Intake pipe to cylinder |
24.9-31.6 Nm (18.4-23.4 ft-lbs) |
| Carburetor to intake pipe |
8.1-10.9 Nm (6.0-8.1 ft-lbs) |
| Air cleaner elbow to carburetor |
5.4-8.1 Nm (4.0-6.0 ft-lbs) |
| Air cleaner bracket to elbow |
2.8-4.0 Nm (2.1-3.0 ft-lbs) |
| Air cleaner bracket to carburetor |
1.7-2.8 Nm (1.3-2.1 ft-lbs) |
| Tank bracket to cylinder (5/16′ lower) |
1.7-2.8 Nm (1.3-2.1 ft-lbs) |
| Tank bracket to cylinder (1/4′) |
17.0-22.6 Nm (12.6-16.7 ft-lbs) |
| Starter-recoil-top mount |
10.9-13.6 Nm (8.1-10.1 ft-lbs) |
| Starter-electric-straight drive |
4-5-6.8 Nm (3.0-4.1 ft-lbs) |
| Rope start pulley mounting screws |
15.8-19.2 Nm (11.7-14.2 ft-lbs) |
| Rocker arm box to cylinder head |
6.8-8.5 Nm (4.1-6.3 ft-lbs) |
| Rocker arm cover and breather (screw to stud) |
9.0-10.2 Nm (6.7-7.6 ft-lbs) |
| Rocker arm adjusting screw lock nut |
1.7-2.3 Nm (1.3-1.7 ft-lbs) |
| Magneto stator mounting screw |
2.3-3.4 Nm (1.7-2.5 ft-lbs) |
| Blower housing to baffle or cylinder |
8.1-10.9 Nm (6.0-8.1 ft-lbs) |
| Housing baffle to cylinder |
5.4-8.1 Nm (4.0-6.0 ft-lbs) |
| Blower housing extension to cylinder |
8.1-10.9 Nm (6.0-8.1 ft-lbs) |
| Governor rod clamp to rod (screw and nut) |
8.1-10.9 Nm (6.0-8.1 ft-lbs) |
| Governor rod clamp to lever (screw and nut) |
1.7-2.8 Nm (1.3-2.1 ft-lbs) |
| Ground wire to terminal |
1.7-2.3 Nm (1.3-1.7 ft-lbs) |
| Toggle stop switch nut |
0.6-1.1 Nm (0.4-0.8 ft-lbs) |
| Oil drain plug 3/8-18 |
1.1-1.7 Nm (0.8-1.3 ft-lbs) |
| Oil drain cap |
9.0-11.3 Nm (6.7-8.3 ft-lbs) |
The Tecumseh HH160 is a 453 cc, (27.6 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft, manufactured by Tecumseh for general-purpose applications.
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