Yanmar 40 HP marire engine will not start or turn over. Batteries are charged. Thoughts?

Answer 1

Check all your electrical connections. If there is voltage to the starter and it is not working pull your starter and go get it bench tested. Try to roll the motor over by hand. A couple rotations will do. This will tell you if it is froze up. It should roll over with no binding. If there is binding you have bigger problems. Good luck.

Answer 2

I would get a test light and a continuity tester, both are only like 5 bucks from an auto store. Check for continutuity between the + on the battery and the + on the solenoid/starter. Then check for - continuity.

Answer 3

in case you start up the automobile with yet another Battery and the disconnect the helpful terminal, Does the automobile nevertheless run? (sure) Then the Alternator continues to be sturdy. Then in case you reinstall your Battery what occurs? Engine Dies? Bobbles in one or 2 cellular of the Battery? (sure)=ineffective cellular! If the automobile starts off with a distinctive Battery the Terminals are sturdy. I stay in the Philippines and maximum of those old form Batteries in trouble-free terms final 12 to 24 Months. they'd desire to have "Battery Recondition shops" there as we do right here? Get a sparkling or sturdy Reconditioned Battery!

Answer 4

Wiring, switches, starter solenoid would be the areas I would check. Any fuses are worth a look as well.

Answer 5

Maybe the starter is shot..or the internal guts of the motor are froze up...so if your starter not fire up...then maybe it shot..or it it does but nothing happens..then u got a problem inside of your engine

Answer 6

Bad connection from the battery, try checking for breaks, or loose cables, or replace the cables.

Answer 7

I would check the starter solenoid first then the starter.

Answer 8

loose electrical connection check all battery wiring. starter.