Engine Specifications; Tvt691 Engine Specifications - Tecumseh V-twin Technician's Handbook

TVT 691 ENGINE SPECIFICATIONS
Displacement
Stroke
Bore
PISTONS
Piston Diameter
Piston Pin Diameter
Piston Pin Bore Diameter
Piston , Top and Middle Ring Grooves
Piston, Lower Ring Groove
Piston Ring Side Clearance
Piston Ring End Gaps
VALVES
Valve lash
Valve Seat Angle - Cylinder Head
Valve Seat Width - Cylinder Head
Valve Face Angle
Valve Stem Diameter Exhaust
Valve Stem Diameter Intake
Standard Valve Guide Dia.
Valve Spring Free Length
CHAPTER 10. ENGINE SPECIFICATIONS
English Std.
42.18 cubic inches
2.75
3.126
3.125
3.1220
3.1235
.6248
.6251
.6257
.0645
.0665
.1255
.1275
.002 - .005 Top
.001 - .004 Center
.001 - .004 Bottom
.007-.015 – Top
.013-.021 – Center
.005 -.013 – Bottom
Both .004
Both 46 Degrees
Both .042
.052
Both 45 Degrees
.3080
.3085
.3095
.310
.312
.313
1.935
1.995
Metric
691cc
69.85
79.4004
79.375
79.2988
79.3369
15.870
15.878
15.893
1.638
1.689
3.188
3.239
.0890
.0640
.0640
.178-.381
.330-.533
.127-.330
Both .102
Both 46 Degrees
Both 1.067
1.321
Both 45 Degrees
7.823
7.836
7.861
7.874
7.925
7.950
49.15
50.67
10-1