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Yes you are right, mine calls for 14-1/2 also , I ordered a set of 0.5 Mod with a 20 PA . thanks for your reply Don

Thanks for your replies, as you can tell gear making is new to me , I acquired the .8 module cutters years ago and haven't cut any gears yet. looking to buy a 0.5 set , but most have a PA of 20 degree, my print calls for a PA of 16 degrees will this make a big difference? by the way...

What will be the outcome if I use a .8 module cutters instead of a .5 module cutters it calls for? Will my shaft center distance be off? the gears are the crankshaft and cam. a 36 and 72 teeth

I am very pleased to say, I solved my problem or problems, and the engine runs as it's suppose to, Hit, Miss the whole works. the sparking I believe to be oil on the points. weak sparks, weak battery now have a new lawn mower battery, and the real problem I believe was the needle valve had a...

Brian, I do have a condenser (just forgot about it) but don't know if it is working, apparently not well. thanks don

is it a normal thing to have the points bonce and spark? I'm using a auto coil and points,spark not real strong but blue, it did start several times but so far only briefly, cylinder did get warmed up then nothing, spark gets weaker the more I try to start it. Do I need a different coil...