The tech website says that all plugs on tecumsah engines is .030
I have used a Champion RJ19LM or J19LM, both work fine.
The correct spark plug for a 1963 Evinrude 10hp outboard is typically a Champion J6C or equivalent. The recommended spark plug gap is generally around 0.030 inches (0.76 mm). Always consult the owner's manual or a trusted source for specific details related to your engine model.
Well, friend, a Tecumseh 10hp motor can go quite fast depending on the equipment it's powering. It's like a happy little engine that can help you move smoothly and steadily. Just remember to take your time, enjoy the journey, and always paint some happy little trees along the way.
Get the model # and click the link I will post.
The speed of a 10hp Briggs and Stratton motor can vary depending on the specific model and application it is used for. In general, a 10hp engine can power a variety of equipment such as lawnmowers, generators, and small vehicles. The top speed of equipment powered by a 10hp engine will depend on factors such as gear ratios, tire size, and aerodynamics. It is important to consult the manufacturer's specifications for the specific equipment in question to determine its maximum speed.
Put lots of oil in the cylinder through the spark plug hole, and let it sit overnight.
10HP to 20HP according to engine displacement and condition.
Check wires for insulation cracks. Buy an electronic (solid state) ignition conversion from Stens for $10 and install (instructions come w/kit). This will bypass old and unreliable condensor and point ignition system.
http://www4.briggsandstratton.com/miscpdfs/RNT/Engine%20Specifications%20Chart_ms3992.pdf
Should be 36 ounces + 4 more ounces if it has an oil filter. Just do not overfill it.
Because a 5hp motor does not have enough power to turn a 10hp load.
10HP Subaru gas enginereferenced: http://www.acehardwaresuperstore.com/coleman-powermate-5000-generator-p-88980.html?ref=42