Originally Posted by Downhilldai
Sorry, my mistake. The manual says:
"Replace spark plugs at first 100 hours or first year. After that, inspect spark plugs every 100 hours or once yearly. Replace spark plugs as needed"
This motor should, in any case, have had its plugs replaced by the time it was 1 year old.
Bearing in mind that 6 Merc Optimax spark plugs cost in the region of £115 - £130, I always took them out, cleaned them up and put them right back in again!! The engine never missed a beat and just in case I always had a spare set in the tool box just in case.
Replacing cause the manual says so, particularly when the engine is out of warranty is a bit silly IMHO.
Also if I were you I would be quite worried about such low hours on an old engine. Clearly its a gin palace special and most likely used once or twice a year.
It will have had the balls ragged off it.
Buying low engine hours on an old engine is not the b all and end all.
Also early Optis had a recall for dodgy injectors. Make sure around the injectors there is a blue/purple collar to identify that the recall has been done. If it hasn't its an expensive job to get done and not doing can cause substantial mechanical damage.
I've had problems with the relays as well. Make sure everything runs A OK as they are a bit expensive to replace.
Early trim motors can fail where the cable enters the top of the trim motor with water getting in to the motor so have a good look, particulalry if stored afloat.