Got an LX176 used last year as a result of recommendations here and LOVE IT. A couple of weeks ago it would not start. Jumped it and it ran fine. Brake set, deck lever up, PTO (I assume that is what engages mower deck on the 176) in off position. Next use started and ran fine. Went out today and had to jump it. When I pulled the switch (PTO) to engage mower deck, nothing. ENgine continued to run fine. Shut off and it would not start. When it did start and I switch headlight for the hell of it, engine stumbled and died and headlight did not come on. So... Engine runs fine, started cranks fine with jump. Sort of stumped. Any clues? Thanks in advance. Love this mower.