2008 Optimax 115 rattling???

[OldDude]

Was out fishing last night. I noticed a rattling noise coming from the lower unit. It almost sounds like something is loose. Any ideas?

 

[Andrebass]

Bearings, check lower oil for water. Possible bent shaft.

Maybe just a loose prop, check prop nut

 

[byron cooley]

Google
I believe the 1.5L Optis were having rattling noises from lower unit or prop around idle speed

 

[OldDude]

I used the Google. I found the noise issues. It's been rough since we bought it. I guess i will keep it serviced and watch it.

Thanks for the input.

 

[byron cooley]

I have over 2900 hours on smartcraft monitor on my 2005 75hp Opti. Been trouble free except for occasional stalling at idle in gear way back in its life.
Have the idle rattle in prop area mildly.
Tweaked ecu and 90hp throttle body restrictor as soon as warrantee ran out. Never babied the throttle, run it hard almost every weekend.
Awesome motor