120 VRO Fuel Pump Diagram/View

[chuckb]

Hello,

Does anyone have an exploded view of a 120 VRO combo oil/fuel pump? I'm interested in just the fuel pump diaphrams, springs & things. I may have shot something across tha basement while dismantling the pump. Something doesn't seem right.

Thanks

 

[HighTrim]

Re: 120 VRO Fuel Pump Diagram/View

This may help

http://continuouswave.com/whaler/reference/VRO.html

Or check

www.shop.evinrude.com

and navigate to your particualar model for an exploded diagram

 

[chuckb]

Re: 120 VRO Fuel Pump Diagram/View

Thanks High Trim,

Any advice on my latest question?

Last season my 1990 Johnson 120 VRO was experiencing fuel stavation problems. Died at mid to high throttle. I've attacked all the usual suspects (new lnes, filters, water spearator, anto-siphon, fresh fuel, etc, etc). This didn't help. So last ditch effort I've just rebuilt the fuel pump. Note: VRO is not used. Now runs dry after a few minutes on the muffs. I've put a clear line in place and there are no bubbles before death so I'm assuming I'm running on the bowls. Pumping the primer ball will bring it back to life just as it is coughing it's last breath.

It there a trick to setting the new diaphrams/pistons in the pump? Could poor compression or bad reed be a cause. Would simply using an electric fuel pump be the answer.

Any help would be appreciated. The grandkids are looking foward to fireworks over the lake this upcoming 4th of July.

Thanks in advance for any prompt responses.................

 

[kenmyfam]

Re: 120 VRO Fuel Pump Diagram/View

Proper venting ????
Re investigate the fuel pump assembly for issues first.

 

[ezeke]

Re: 120 VRO Fuel Pump Diagram/View

Do you have the blue and gold pulse limiter and have you cleaned it?

Here's a link to Bill Kelley's Site: http://www.maxrules.com/graphics/vropics/vrodrawings.gif

 

[ezeke]

Re: 120 VRO Fuel Pump Diagram/View

You can run the motor on a single traditional lift pump, but you probably should have two set up like the V6 commercial motors.

As long as you are just cruising and not pushing it, one should do, but stay away from the top end or you may run lean.

I would use the newer OEM lift pump #5005462. It has three nipples so you should be able to just hook up the hoses and go.

If you are anywhere near Orleans, you can use one of my lift pumps until after the holidays. Just send a PM by clicking on my user name.