I’m seeking some advice on any “must know” information before I decide to take the carbs off my 2005 Johnson 90hp 2 stroke and clean the jets and let me say that this will be the most in-depth mechanical “operation” that I have ever done. So, I’d like some insight into how specific this job is. I’ve done some research (via youtube vids and other advice) and it doesn’t seem too crazy but I’d like to know as previously stated the “must know” information before I attempt this, meaning “you always do this X before or after you clean a carb…” so that I don’t cause more harm than good.
Why am I attempting this: Motor runs well at just below 4K RPM, when I put the motor under heavy load (over 4K RPM) it starts to ever so slightly miss and seems like it’s working harder than it should and not getting enough fuel. Therefore, I’ve researched that most likely the jet(s) are clogged from ethanol/sitting.
Motor: 2005 Johnson 90hp 2 stroke
Recently replaced the power pack which helped the performance 90%.
I’m seeking some advice on any “must know” information before I decide to take the carbs off my 2005 Johnson 90hp 2 stroke and clean the jets and let me say that this will be the most in-depth mechanical “operation” that I have ever done. So, I’d like some insight into how specific this job is. I’ve done some research (via youtube vids and other advice) and it doesn’t seem too crazy but I’d like to know as previously stated the “must know” information before I attempt this, meaning “you always do this X before or after you clean a carb…” so that I don’t cause more harm than good.
Why am I attempting this: Motor runs well at just below 4K RPM, when I put the motor under heavy load (over 4K RPM) it starts to ever so slightly miss and seems like it’s working harder than it should and not getting enough fuel. Therefore, I’ve researched that most likely the jet(s) are clogged from ethanol/sitting.
Motor: 2005 Johnson 90hp 2 stroke
Recently replaced the power pack which helped the performance 90%.
Any advice is greatly appreciated, thanks.
“Endeavor to Persevere.
Give,Give… Never Take.”
EC
First off, buy a good carburetor dip kit from an auto parts store. Gunk makes a good one. It usually comes in a gallon paint can and has a metal basket inside for dipping your parts. This is essential for breaking down the shellac in the hard to get places (ie places you cant see)
Its pretty simple. I like to take a few photographs of everything before I start breaking it down. Remove the VRO and breather. Disconnect the throttle mechanism. Unbolt the carburetor.
****this is an important tip for when you put everything back together. There should be a high pressure and a low pressure screw adjustment on the side of the carb. One is bigger than the ot
I recently did the same thing to my Mercury 115. Problem was I did not re-sync the carbs when I was done. I ended up dropping it off to pay someone else to take care of it once I realized how much more effort that last part was going to take. (After I had already taken everything apart and cleaned it twice)