Optimax 200hp not charging !!

[tim2658]

Just wondered if anyone has had this she starts perfect and runs lovely but after about 45mins she cuts out then realised that she's drained the battery so I've checked it running and she's not charging !! Is there a fuse or diode I can check !!

[neil.mccrirrick]

I've a 225 opti. There are 4 20 amp fuses all together on the right hand side opposite the oil tank next to the relays.

If you take the cover off the flywheel you will find the alternator and the belt that drives it. I'd check that as well.

[Jeff]

Directly from a USA forum:

Alternator Lead: You have something else going on here. The LARGE RED output lead is a FUSIBLE LINK LEAD (with a 100amp fusible link protector IN that lead). It is designed to protect the sensitive electronics on your engine from an overcurrent condition (most commonly from reverse-polarity battery connection).

I would be very wary of making "repairs" to this fusible link lead circuit. If it was damaged in any way- REPLACE the fusible link. It is a separate replacement part.

[Razorbill RIBs]

As Jeff says, remove and check your fusable 100mp link from the alternator for continuity.

Its not always an electrical failure either, had one fail when the cable came free of its cable tied position and caught on the wrong side of the throttle linkage which stretched it to breaking as the throttle was opened. Looked visibly okay!

If it is failed I recall the cost of a genuine replacement being a silly price. We ended up making up replacements (keep spare onboard also) using quality soldered spades, copper rivets, 100amp megablade type fuse and a couple of layers of a good, thick adhesive lined heat shrink....

[RIK]

Have you checked the small earth wire from the alternater to engine block I had a problem of not charging


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