1990 40 hp johnson with 2 problems

[karlow1]

It has not been used in over a year. I just picked it up a few weeks ago and I have been working my way through it. The first issue is it has manual tilt and it doe not. The previous owner says that it has not worked in years. i do not have a manual for this one. How do I release it so the I can fix the cable, or?. I have given the plastic handle a try, but I do not think it's attached to anything. The 2nd problem is the carbs. It would only run on spray, so I pulled them, ordered kits for them. The kits are due on the 2nd. I need to know the float hight. In take it you flip the upside down and measure between the top of the float and the body. What is the target dimension?

t-j40elesf
sn g02361b65

Thanks for the help

 

[tashasdaddy]

Re: 1990 40 hp johnson with 2 problems

the easiest is to adjust the float horizontal with the carb body. Never use starter spray on a 2 stroke motor, use premixed gas. read this http://forums.iboats.com/showthread.php?t=244013

you have a high compression hydrolic, tilt assist, the cable is replaceable, the piston cannot be repaired, it is a replacement item. to access take out the bottom thru bolt that goes from bracket to bracket. this holds the bottom of the tilt assembly, once removed you can tilt the motor, and gain access.

 

[TiminIN]

Re: 1990 40 hp johnson with 2 problems

I've bought carb kits from Sierra and from BRC and the ones from Sierra have instructions and tells how far it should come down. I have a 1982 60 hp Johnson and there is to be a 3/4 inch clearance for mine. Hopefully your kit will have instructions.

 

[karlow1]

Re: 1990 40 hp johnson with 2 problems

Thanks, i will give it a try.
Spray: pre-mix in a spray bottle, not starting fluid.
The carbs looked OK, the gas smells like it may be 2-3 years old!
FYI, if you are going to pull the carbs on this engine, first remove the solenoid on the side of the engine. It is part of the cold start system. Pull the two small hoses from it so that you will not brake the nipple off while tring to pull the hose off the carb!
I repaired it with super glue, and a straw from some cab cleaner. We will see if it will hold. It might not it it's poly-propylene.

Thanks a bunch

I will pump some of the gas out of the tank and take a look at. There was only about a gal. and I have added a couple of gal to it.
KP

So does that mean the proper float hight is parallel?
On cars, typically a dim is given.
I'm just tring to be sure, I would like to get bit right the first try.

 

[tashasdaddy]

Re: 1990 40 hp johnson with 2 problems

read high trims post in the link, you turn the carb up side down, so float is in closed position, the bottom or the float and the carb body, should be parallel.

 

[karlow1]

Re: 1990 40 hp johnson with 2 problems

Results:
I took me about 1/2 hour to remove the lower retaining shaft. Salt never sleeps.
I took about 40 min to repair the damage to the threads. The ground wire was broken, I broke the bolt and had to re-tap it. and I found the zink! The cable was a little frozen, but with some oil and time It's AOK. The trim assist cyld seems OK. It will go up and down if the valve is pulled and the cylinder is pulled.
The problems: the connector on the end of the cable is broken. I found three holes in the hull under the moto
More epoxy! Can I buy the connector, or will I have to buy a cable?

KP
The trim assist cyl upper pin is not moving! It would be a pain to remove it.

 

[karlow1]

Re: 1990 40 hp johnson with 2 problems

Can I buy the connector, or will I have to buy a cable?

Do you have a link where I can pick up the cable on line?
I might try to fab a connector for the cable.
Should the assist cylinder behave like a gas shock?
If I pull the valve open I can pull the shaft, or push it, but it dose not deploy by it's self. Should it?

KP

 

[karlow1]

Re: 1990 40 hp johnson with 2 problems

UP-date.
I fabed a part to replace the tilt cable connector from SS plate. It looks like it's the same connector used on the carb linkage. The part works OK but. There always seems to be a butt involved. The cable clamp seems like going to break next. It takes a lot of force to release the valve.
I put the kit in the carbs, set the floats, checked the quality of the gas in the tank. It all seemed OK. Fired her up on the hose. Prop prop, prop prop, pop croak. It did this a few times. I tried it at higher speed with similar results.
I adjusted the the carb low speed jet some: broom broom broom. Not a bad idle, not great. No more backfiring, no stalling. It seems you can rev it and get the Zing ga ga ga ga ga 2 cycle sound that we all love. She might be OK. I will add about 6 gal of fresh gas, some carb cleaner and take her to the p-stone for sea trials this weekend. Most likely I will starter her up on Thurs to see how she goes.
Question, How should I adjust the cab? Use vac gage and set it for the max vac? If so, where do I connect it?
A little help please