Mercury 1965 65HP Throttle Issue?

[ohdannyboy]

After a few weeks of troubleshooting, I finally got the engine to turn on. Now my problem is while I push the throttle lever forward slowly the propeller starts to spin but but at a slow constant speed. Even after after pushing the lever all the way forward the speed remains the same. The same thing happens when I put it in reverse. While pushing the throttle lever forward the engine RPM does not increase. Thanks in advance.

 

[adeneo]

Re: Mercury 1965 65HP Throttle Issue?

You need to check the cables from the control to the engine. A cable is either loose or broken.

 

[ohdannyboy]

Re: Mercury 1965 65HP Throttle Issue?

No loose cables. The guy I bought the boat from did say he installed new Quicksilver cables. I did notice when I push the throttle cable forward it moves the bracket lever to the magneto however the magneto does not rotate. Does it need a throttle adjustment? Same thing happens in reverse.

 

[rivermouse]

Re: Mercury 1965 65HP Throttle Issue?

Something is not connected or come loose because the magneto has to move in order for the carbs to open.You need a diagram of how everything goes together, It sounds like the lock cam which prevents your shifting into gear when the engine is idled too fast is not in sinc.

 

[ohdannyboy]

Re: Mercury 1965 65HP Throttle Issue?

I know that the control cable is not loose or broken. The lever to the magneto is moving when I push the control lever forward. I have to start from there and see if its not connected somewhere. As you stated, it may be an issue with the lock cam. Any idea how to sync it? I have diagrams of my engine. Thanks again for your quick responses.

 

[Mi duckdown]

Re: Mercury 1965 65HP Throttle Issue?

You need An OEM MERC MANUAL for that motor and serial number. To buy one.
It will be your best investment.