3to 11hp 4-cycle l-head engines - Small Engine Suppliers
3to 11hp 4-cycle l-head engines - Small Engine Suppliers
3to 11hp 4-cycle l-head engines - Small Engine Suppliers
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ENGINE SPECIFICATIONS STANDARD POINT IGNITION<br />
All models have point setting of .020" (.508 mm), spark plug gap of .030" (.762 mm), valve seat angle of 46 0 .<br />
All dimensions are in inches.<br />
SPECIFICATIONS<br />
LAV25, LAV30, TVS75<br />
Prior to 8/1987,<br />
H25, H30-1982 & Prior<br />
H30<br />
(1983 Serial no.)<br />
LAV35, H35<br />
(1982 & prior)<br />
H35<br />
( 1983 Serial no.)<br />
ECV100<br />
U.S.<br />
Metric<br />
mm<br />
U.S.<br />
Metric<br />
mm<br />
U.S.<br />
Metric<br />
mm<br />
U.S.<br />
Metric<br />
mm<br />
U.S.<br />
Metric<br />
mm<br />
Displacement<br />
(in³) (cc) 7.75<br />
127.02<br />
9.06<br />
148.50<br />
9.06<br />
148.50<br />
9.52<br />
156.03<br />
9.98<br />
163.57<br />
Stroke<br />
1.844<br />
46.838<br />
1.844<br />
46.838<br />
1.844<br />
46.836<br />
1.938<br />
49.225<br />
1.844<br />
46.838<br />
Bore<br />
2.3125<br />
2.3135<br />
58.738<br />
58.763<br />
2.5000<br />
2.5010<br />
63.5<br />
63.525<br />
2.5000<br />
2.5010<br />
63.5<br />
63.525<br />
2.5000<br />
2.5010<br />
63.5<br />
63.525<br />
2.6250<br />
2.6260<br />
66.675<br />
66.700<br />
Timing Dim.<br />
B.T.D.C.<br />
0.065<br />
1.651<br />
0.035<br />
. 889<br />
0.065<br />
1.651<br />
0.035<br />
. 889<br />
0.035<br />
.889<br />
Valve Clearance<br />
.004<br />
.008<br />
.102<br />
.203<br />
.004<br />
.008<br />
.102<br />
.203<br />
.004<br />
.008<br />
.102<br />
.203<br />
.004<br />
.008<br />
.102<br />
.203<br />
.004<br />
.008<br />
.102<br />
.203<br />
Valve Seat Width<br />
.035<br />
.045<br />
.889<br />
1.143<br />
.035<br />
.045<br />
.889<br />
1.143<br />
.035<br />
.045<br />
.889<br />
1.143<br />
.035<br />
.045<br />
.889<br />
1.143<br />
.035<br />
.045<br />
.889<br />
1.143<br />
Valve Guide<br />
Oversize Dim.<br />
.2807<br />
.2817<br />
7.130<br />
7.155<br />
.2807<br />
.2817<br />
7.130<br />
7.155<br />
.2807<br />
.2817<br />
7.130<br />
7.155<br />
.2807<br />
.2817<br />
7.130<br />
7.155<br />
.2807<br />
.2817<br />
7.130<br />
7.155<br />
Crankshaft End<br />
Play<br />
.005<br />
.027<br />
.127<br />
.686<br />
.005<br />
.027<br />
.127<br />
.686<br />
.005<br />
.027<br />
.127<br />
.686<br />
.005<br />
.027<br />
.127<br />
.686<br />
.005<br />
.027<br />
.127<br />
.686<br />
Crankpin Journal<br />
Dia.<br />
.8610<br />
.8615<br />
21.869<br />
21.882<br />
.8610<br />
.8615<br />
21.869<br />
21.882<br />
.8610<br />
.8615<br />
21.869<br />
21.882<br />
.9995<br />
1.0000<br />
25.387<br />
25.400<br />
.8610<br />
.8615<br />
21.869<br />
21.882<br />
Crankshaft Mag.<br />
Main Brg. Dia.<br />
.8735<br />
.8740<br />
22.187<br />
22.200<br />
.9985<br />
.9990<br />
25.362<br />
25.375<br />
.8735<br />
.8740<br />
22.187<br />
22.200<br />
.9985<br />
.9990<br />
25.362<br />
25.375<br />
.8735<br />
.8740<br />
22.187<br />
22.200<br />
Crankshaft P.T.O.<br />
Main Brg. Dia.<br />
.8735<br />
.8740<br />
22.187<br />
22.200<br />
.8735<br />
.8740<br />
22.187<br />
22.200<br />
.8735<br />
.8740<br />
22.187<br />
22.200<br />
.9985<br />
.9990<br />
25.362<br />
25.375<br />
.8735<br />
.8740<br />
22.187<br />
22.200<br />
Camshaft Bearing<br />
.4975<br />
.4980<br />
12.637<br />
12.649<br />
.4975<br />
.4980<br />
12.637<br />
12.649<br />
.4975<br />
.4980<br />
12.637<br />
12.649<br />
.4975<br />
.4980<br />
12.637<br />
12.649<br />
.4975<br />
.4980<br />
12.637<br />
12.649<br />
Conn. Rod Dia.<br />
Crank Brg.<br />
.8620<br />
.8625<br />
21.895<br />
21.908<br />
.8620<br />
.8625<br />
21.895<br />
21.908<br />
.8620<br />
.8625<br />
21.895<br />
21.908<br />
1.0005<br />
1.0010<br />
25.413<br />
25.425<br />
.8620<br />
.8625<br />
21.895<br />
21.908<br />
Piston Diameter<br />
Bottom Of Skirt<br />
2.3092<br />
2.3100<br />
58.654<br />
58.674<br />
2.4952<br />
2.4960<br />
63.378<br />
63.398<br />
2.4952<br />
2.4960<br />
63.378<br />
63.398<br />
2.4952<br />
2.4960<br />
63.378<br />
63.398<br />
2.6202<br />
2.6210<br />
66.553<br />
66.573<br />
Ring Groove<br />
Side Clearance<br />
1st & 2nd Comp.<br />
Ring Groove<br />
Side Clearance<br />
Bottom Oil<br />
.002<br />
.005<br />
.0005<br />
.0035<br />
.051<br />
.127<br />
.013<br />
.089<br />
.002<br />
.005<br />
.0005<br />
.0035<br />
.051<br />
.127<br />
.013<br />
.089<br />
.002<br />
.005<br />
.0005<br />
.0035<br />
.051<br />
.127<br />
.013<br />
.089<br />
.002<br />
.005<br />
.0005<br />
.0035<br />
.051<br />
.127<br />
.013<br />
.089<br />
.002<br />
.005<br />
.001<br />
.004<br />
.051<br />
.127<br />
.025<br />
.102<br />
Piston Skirt<br />
Clearance<br />
.0025<br />
.0043<br />
.064<br />
.109<br />
.0040<br />
.0058<br />
.102<br />
.147<br />
.0040<br />
.0058<br />
.102<br />
.147<br />
.0040<br />
.0058<br />
.102<br />
.147<br />
.0040<br />
.0058<br />
.102<br />
.147<br />
Ring End Gap<br />
.007<br />
.017<br />
.178<br />
.432<br />
.007<br />
.017<br />
.178<br />
.432<br />
.007<br />
.017<br />
.178<br />
.432<br />
.007<br />
.017<br />
.178<br />
.432<br />
.007<br />
.017<br />
.178<br />
.432<br />
Cylinder Main<br />
Brg.<br />
.8755<br />
.8760<br />
22.238<br />
22.250<br />
1.0005<br />
1.0010<br />
25.413<br />
25.425<br />
.8755<br />
.8760<br />
22.238<br />
22.250<br />
1.0005<br />
1.0010<br />
25.413<br />
25.425<br />
.8755<br />
.8760<br />
22.238<br />
22.250<br />
Cylinder<br />
Cover/Flange<br />
Main Bearing<br />
Diameter<br />
.8755<br />
.8760<br />
22.238<br />
22.250<br />
.8755<br />
.8760<br />
22.238<br />
22.250<br />
.8755<br />
.8760<br />
22.238<br />
22.250<br />
1.0005<br />
1.0010<br />
25.413<br />
25.425<br />
.8755<br />
.8760<br />
22.238<br />
22.250<br />
* Check to detemine bore size<br />
Notes: (A) VM & HM80 - Displacement 19.41 (318 cc) (B) VM & HM80 - Bore 3-1/8"(79.375 mm) (C) VM & HM80 Piston Dia. 3.1195/3.1205<br />
(79.235/79.261 mm) (D) VH50, 60 .0015/.0055 (.038/.140mm) (E) VH70 .0038/.0073 (.097/.185 mm) (F) VH, HH50-70 Models .003/.031<br />
(.762/.787 mm)<br />
93
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