I need to replace the points and condenser on my HH70 Tecumseh due to a no-spark situation. The manual says I can set the points "by rotating the crankshaft until the point arm is resting on the high side of the ignition cam."
My problem is I can't really tell where the highest point in the cam lobe is. There are no markings on the cam lobe. I'm worried that I'll set the point gap off if I just eyeball where the high point is. I can tell pretty well where the high side of the cam lobe is....but I'm just assuming and also I'm not sure if the piston should be all the way at the top of the pistons travel (TDC) with both valves closed to set the gap? But I also hear many Tecumsehs use "advanced" timing..so that could tell me the piston could be past TDC (right?) to set the point gap.
I can't get a straight answer online, the two I get are 1) "sure just set the points at the high point of the lobe." or 2) "Just use a dial gauge or your timing is going to be off.". I was told using a dial gauge is really only necessary when adjusting the armature assemblys' position. I'm hoping I don't have to buy one just to set the points on one engine. I wish somebody on here had a side business of rent out the dial gauges out with a deposit in case the person decides to keep it. (hmmmm.......)
Here is the manual I'm using: http://ww2.justanswer.com/uploads/giftindex/2012-05-16_104037_692509.pdf
My problem is I can't really tell where the highest point in the cam lobe is. There are no markings on the cam lobe. I'm worried that I'll set the point gap off if I just eyeball where the high point is. I can tell pretty well where the high side of the cam lobe is....but I'm just assuming and also I'm not sure if the piston should be all the way at the top of the pistons travel (TDC) with both valves closed to set the gap? But I also hear many Tecumsehs use "advanced" timing..so that could tell me the piston could be past TDC (right?) to set the point gap.
I can't get a straight answer online, the two I get are 1) "sure just set the points at the high point of the lobe." or 2) "Just use a dial gauge or your timing is going to be off.". I was told using a dial gauge is really only necessary when adjusting the armature assemblys' position. I'm hoping I don't have to buy one just to set the points on one engine. I wish somebody on here had a side business of rent out the dial gauges out with a deposit in case the person decides to keep it. (hmmmm.......)
Here is the manual I'm using: http://ww2.justanswer.com/uploads/giftindex/2012-05-16_104037_692509.pdf