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Trying to get my idle quality sorted on my 2010 75HP 2 stroke ELPTO serial no. 1B826880 however appears to be some confusing instruction in my Mercury service manual.

Below instruction seems to...

BTW with regards to idle timing manual says to set to 5 degrees BTDC but also states a range of 2 degrees ATDC - 6 degrees BTDC. Why is that?

Pulled carbs off and noticed cable tie head stuck in one of reeds. Must have got sucked in. Looks like that was problem all along!

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Checked for spark and all good. Rebuilt carburettors and did link and sync. After running at idle for about 5min I noticed bottom carb as per attached photo
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Are there any relatively straight forward electrical test I can do first to rule out electrical issue rather than just a suspicion that carbs need a clean? I started with compression check which...

Assume you are referring to carburettor synchronisation section only and not looking to do timing adjustments? I am unclear as to extent of what needs to be done. Can you advise please?

Engine seems to be idling rough after first outing for season. I have owned from new but never cleaned carbs. Always use Quikleen and Quickare and never ethanol fuel. Decided to have go at removing...

Replaced oil injection hoses (preventative maintenance). Bled oil pump inlet hose by loosening screw. Then as per manual ran outboard at idle for a few minutes with just air in outlet oil hose to try...

Thanks for all your input you have given me some helpful direction. What has occurred to me however is that this issue coincided with me installing new transom mounted transducer. The location hasn’t...

On my last outing it pretty much happened instantly each time I advanced to WOT (seconds not minutes)

I have heard that the oil tank float system can be problematic. Could this be the early stages of float switch failure? I.e. triggered when operating boat at WOT?

No work done on control box. Only installed a new sounder in boat.

I assume you mean after alarm has sounded after running at WOT? Also is it normal for the alarm to immediately stop after putting in neutral? Or should it keep sounding until engines cools down I.e....

You are correct. It was set to knots not kph. Thanks for pointing out!

Around 5200 rpm. Serial number 1B826880. I don’t believe this motor has over rev warning as it has never alarmed in the 11 years I have owned it...

I installed a new Elite FS 7 however the GPS speed over ground reading is lower than actual. Unit reads 30km/h when I know I am travelling at close to 60km/hr. Any ideas why or how to fix?

on my last 2 outings an alarm has sounded when I ran at WOT. Slowed to neutral and alarm stopped. Alarm (continuous beep) would only sound again if I ran at WOT. All other speed/rpm ok. Water pump...

Ok thanks. I’ll give it a try. BTW transducer is transom mount skimmer type (totalscan)...

After using for the last 2-3 years without problem I am now having issue with high chirp and 200kHz sonar periodically losing bottom. (Medium chirp and 83kHz is ok and not affected). This issue is...

Dropped the leg and re-sealed. Now onto the trailer bearings! Thanks for all your comments ...

Mmm. Do I drop the lower unit again and reseal?

Any thoughts or comments on this?

Just serviced water pump on my Mercury 75HP ELPTO for the first time. All went like clockwork (thanks to advice and guidance from this forum). Used the red RTV as per manual. I ran motor on muffs...

I have read previously (probably somewhere on this forum) that you should allow RTV silicon (separating exhaust from water pump) to cure before Re-installing the lower unit after water pump service....

In addition to switching the lanyard kill switch to off position and using key start to crank engine I have come across the idea of slipping spark plug lead boots over a lug or bold head on outboard...