M
mrcrabs
Guest
I bought a sears original 2 cycle outboard engine repair manual covering most all of the 2 cycle engines, I noticed that the listed spark plug gap for the 640 series was .35, I had been gapping plugs at .30. there is also some variance in point gaps between model numbers so .20 is not always right for every engine.
Also this manual has specs. on just about every moving part right down to the inividual size of the needle's in the rod bearings...it gives a much more accurate description of timing procedures even for the the 9.9 which seems to be more complicated and require a couple of specialized tools. If I ever get another scanner I will make some pdfs of the engine specs, may even try my camera on a page and see what I can do. I also have a original Eska repair manual for 1968-76...its worthless compaired to the sears manual, nothing in it that you can't find on the web. Would not wast my money on thoughs ebay Eska repair manuals even for the lower unit...a good parts diagram will do just fine.
If there something special model related I can lookup for you let me know...I can go up to T640-18
Also this manual has specs. on just about every moving part right down to the inividual size of the needle's in the rod bearings...it gives a much more accurate description of timing procedures even for the the 9.9 which seems to be more complicated and require a couple of specialized tools. If I ever get another scanner I will make some pdfs of the engine specs, may even try my camera on a page and see what I can do. I also have a original Eska repair manual for 1968-76...its worthless compaired to the sears manual, nothing in it that you can't find on the web. Would not wast my money on thoughs ebay Eska repair manuals even for the lower unit...a good parts diagram will do just fine.
If there something special model related I can lookup for you let me know...I can go up to T640-18