No spark

BATTERY Is this new? There are three or four possibilities:

1...Battery is "down" or discharged. Needs charged
2...Battery is low on capacity because it's old or defective. A BRAND NEW BATTERY can be defective, so keep that in mind
3....Clamps, connections, cables. Learn to "chase" voltage drop along a cable. If you have good voltage at the battery post (under load) but not at the other end of the cable, it is one of these problems. The clamp can be dirty even though it looks clean, and or loose. The cable can be corroded away internally even though the outside looks great. The eyelet end terminal can be crimped poorly, corroded, etc, or in this lovely Chineseoizationized world, the damn thing just might not have enough copper in the wire!!! It's easy (cheap jumper cables!!!) To make little tiny copper cables with GREAT BIG THICK insulation and make them look like REALLY great heavy duty cables!!