pump on the fuel line.

[packets]

I am a complete neophyte when it comes to boating knowledge. My set up is a Johnson 1977 75hp. I have a question about the fuel line.

It has what i can only describe as a hand cipher pump. After a few to several dozen pumps it hardens. Its located between the fuel filter and the engine.

When and how should this be used to draw fuel from my tank to the outboard?
every time i need to start the engine?
when having trouble starting?
when storing my boat and there is still fuel in the line, leave it there?

All replies are welcome.

Thanks,
P

 

[sje0123]

Re: pump on the fuel line.

It's the primer bulb. Squeeze it until it hardens as needed. It primes the fuel line and rids it of air. Just give it a squeeze to feel if you need to prime. It'll be different every time depending on the situation. No different than the primer bulb on your lawn mover.

 

[packets]

Re: pump on the fuel line.

cool. so i should ensure that the pump is fairly solid prior to starting otherwise i'll get nasty air in my engine?

 

[Silvertip]

Re: pump on the fuel line.

No! It's purpose is to force fuel from the tank to the carburetor. When to use it is not a mystery. You can't use it incorrectly. Use it every time you start the engine if you wish. Use it only on the first start of the day if you wish. This by the way should be the ONLY time it is needed. Use it if the boat has sat for an extended period of time. The reason the primer bulb gets hard is because the float chamber in the carb is full and the float has closed the needle and seat so you cannot fill the engine with fuel. Once the engine is running the fuel pump sucks fuel from the tank and forces it into the carb.

 

[sje0123]

Re: pump on the fuel line.

Air isn't really a concern in the line. It's not going to damage anything. The engine will just stall out from not receiving fuel or just not start all together. Like I said, whether it's needed will vary given the circumstances like Silvertip listed.

 

[packets]

Re: pump on the fuel line.

thank you for the clarification guys - just needed to know what it was for.

 

[packets]

Re: pump on the fuel line.

the mechanic walloped the motor. it started working

 

[steelespike]

Re: pump on the fuel line.

Just want to point out its not a strength contest squeeze till firm.With the motor running it will be less firm,that's normal.Almost anytime the motor is off it will accept a squeeze or 2.
If it doesn't it indicates conditions are excellent.

 

[64osby]

Re: pump on the fuel line.

I am a complete neophyte when it comes to boating knowledge. ...... All replies are welcome.

Thanks,
P

Packets, I don't know if anyone has said it before, but welcome to iboats. I'm glad you have taken on the sometimes expensive hobby of boating.

If I could offer a few suggestions, Read as much as you can on your boat and motor, this site has a great search function. Get a service manual for your motor, it will answer many of the questions you will have in the future and you will be able to reference it when reading posts on this site.

You may want to find a friend or even a stranger to go over your boat with you. Get to know the ropes, tell you the requirements of safe boating and you country's or local laws. Maybe even take a boating class if they offer those down under.

You picked a great place to ask questions, I learn more here each day. Best of luck.