1971 Honda CL 350 spark plug type

SOURCE: How do you change a oil filter on a 1971 Honda CL

You don't really "change" the filter. You just clean it. There is a screen filter on the bottom of the oil pump that serves to do a basic filter of the oil going into the oil pump. The real "filter is a centrifugal filter on the right end of the crankshaft. The spinning filter forces the heavy dirt particles to the inner rim of the filter where they build up to a somewhat solid mass. A screw driver pushed into the mass will break the dirt up and when most of the dirt mass is removed, a can of carb cleaner can finish the job. Only minor dis-assembly of the filter is needed to clean it. There is no need to actually remove the filter from the crankshaft.

You can download a free factory service manual at www.carlsalter.com/motorcycle-manuals.asp Please rate my answer. Thanks.

SOURCE: how much engine oil goes

2.1 quarts of 10w40 motor oil. NEVER use synthetic oils.

SOURCE: whats the correct spark plug gap for a 1972 honda

Correct spark plug gap is 0.6 -0.7mm and oil viscosity is variable like SAE 20/30w some thing like this and also depends on weather conditions.