QuestionI am attempting to breathe life into an older model Tecumseh Horiz shaft engine. Model #HH70-140023B,Serial #5107D.The engine is coupled to a 120VAC electrial generator. I have replaced the point set, condenser and plug. I need to know the specification and procedure for finding the BTDC timing. Also the air gap spec for the magneto pole ends and the inside of the fly wheel. And how that setting is accomplished?
On the engine output shaft side, there is a housing about two inches thick, attached to this housing is the AC generator. On the top of this housing is a port where one might expect to find a dip stick. Inserted into this port is a removable plug type device that looks like an over grown liquor bottle pouring spout. Could this be a method of introducing lube oil to the coupling between the engine and the generator?
A local scout troop is hoping I can "repair" this generator set, so am I. If you can accept pictures I can forward same of this old "Ralph Electric Plants, Inc.- Model PKN" generator that once graced an old motor home. Your assistance and advice is greatly appreciated
AnswerHi Jay,
The timing is usually set by the point gap which should be .020. I don't know the specs for setting the timing with a degree wheel and a test light. The air gap on the coil should be .012 but to set it you need a "special tool" which is a cut-away flywheel. It is attached and provides access to the coil, allowing adjustment. Without one, I don't know what to tell you. Can you slip a feeler gage under the flywheel to check the gap?
I suspect that the spout you mention is an oiler, that supplies lubrication to a bushing. You could send pics to HummerCommander@netscape.net
Michael
