butcho

Simplicity Express 15.5 hp B&S engine

I have an issue with this mower on starting.I have to hold the key in the start position for at least a minute before the engine will crank at all? It seems like the voltage won't reach the starter. I haven't done anything to it at all yet. Wanted to get your opinions 'fore I start yanking and replacing wires etc.
Thanx in advance.

cheese

When you hold the key, do you hear anything, does the engine turn very slowly, or nothing happens at all or what?

Sounds like you may need to adjust the valves.

butcho

Thanx for responding Cheese.Worked on it yesterday, cleaned the switch connections and after charging the battery back up, it fired right off.No hesitation at all, but after awhile same thing.hesitation but not quite as bad.Checked the valves and they are at .004 as they should be.I'm guessing maybe a cable with 2 much resistance?
It's intermittent now, and that really sucks. In answer to your question though. It clicks like the relay is engaging but then it will try to turn slowly and then it fires as should be.

cheese

With it cranking fine after charging the battery but after a while it goes back to slow cranking, I would suspect the battery. Especially if it's 2 years old or more.

butcho

Yeah, I agree also.I hate to buy a new battery this close to non-cutting season, so it can wait til next spring.Thanx, Cheese you are helpful as always.

puey61

Often overlooked is the ground cable from the battery where it attaches to the frame. You don't want any corrosion or rust that can inhibit good current flow here. Also make sure the other five points of battery-related, start circuit ends (connectors/terminals) are clean and secure - both cable ends at the battery, both ends at the starter solenoid and the end at the starter motor. A wire brush or emery cloth or scotch cloth works well at cleaning them up.