Need Help with Robin Engine

Schultz · Aug 31, 2004

Thanks, for the reply Jack. I would have thought 3000 hrs would require a lot of special attention or just luck, not to mention 6400 hrs.

pajoube · Aug 31, 2004

Wonder if that person left the key on and the hour meter kept running?
PJ

JackRobin · Aug 31, 2004

</font><font color="blue" class="small">( Wonder if that person left the key on and the hour meter kept running?
PJ )</font>

It's possible, you never know, that's what the tachometer stated. The unit was serviced frequently by one our best Service Centers in this area and personally I think it was legit.

As an addition I want to say that we had a customer in Florida with the 6100W Robin generator, this unit had 7600 hrs. on it and still ran perfectly, 11hp engine.
I think this customer will be featured in our next Robin News magazine.
This gentleman used this unit almost 24/7 on a trailer with a horse in it, I guess he used it to power the A/C for the horse. /forums/images/graemlins/grin.gif

So, all in all this is possible.

Regards,

Jack Gawecki
Robin America, Inc.

pairodime · Aug 31, 2004

Thanks, Jack. This explains why I'm having continuing problems!!! Even after insulating the fuel line and filter and having replaced my pump, the "vapor lock" symptoms continue. Turns out the distributor gave me part 248-62201-00 for the smaller engine instead of a 280-62201-00. They looked exactly the same to me, except for a painted blue dot on the original. The part guy made a big deal about whether I had a blue dot, but no one could explain its significance. I think I may have been duped /forums/images/graemlins/frown.gif I'm mad about that, but madder at myself for not noticing the part discrepancy until now /forums/images/graemlins/mad.gif

Jack, I need the right part.

Schultz · Sep 1, 2004

That was the first thing that came to mind when MR said that's 24hrs for 267 days.

JackRobin · Sep 1, 2004

The part with a blue dot on it indicates the stronger fuel pump. The correct part# 280-62201-00

Regards,

Jack Gawecki
Robin America, Inc.
Technical Support Dept.
800-277-6246

BobRip · Feb 10, 2005

Jack, what is the rated pressure and/or flow of the fuel pump. I pulled the hose off of the output and at idle the pressure was very low. I could not measure it on my pressure guage, not even a flicker. There seems to be a miss when the engine idles for a while. I realize this is not like a car fuel pump, so I need a little help in diagnosis.

Thanks in advance for your help.

Bob Rip

JackRobin · Feb 11, 2005

Bob,

You should be getting approximately 2PSI of pressure coming into the carburetor from the fuel pump. If you feel that this pressure is too low, it is most likely caused by two things.

1. The diaphram inside the fuel pump is raptured or damaged.

2. Your oil level in the crankcase is too high and is covering the negative pressure valve that is a part of the crankcase. The fuel pump is feeding off this negative pressure valve, if your oil level is covering that valve, the pressure of the fuel pump is very weak.

These are the two things that I can think of at the moment. Please check into this and let me know.

Regards,

Jack Gawecki
Robin America, Inc.
Technical Support Dept.
800-277-6246

J_J · Feb 11, 2005

Someone else had a similar problem a while back, and I suggested that they take the hose from the carb side fuel filter, and run a hose to the filter and place in a container to catch the fuel from the fuel pump when it is running. If you have another small tank, attach the hose to the carb and put some fuel into the tank. If you hold the tank high enough, gravity alone should be enough to start and run the engine. With the engine running, look at the flow from the fuel pump to see if it enough. On my Kohler, the fuel solenoid shut off valve would pick up some debris and cause the engine to not run right.

BobRip · Feb 11, 2005

Jack, thanks for the info. I checked the oil level and it is right on the top mark. I will pull the pump tomorrow and check it. Clint Blake found some loose screws on his. He disassembled it and cleaned it. The last report I had was that it is working OK. Anyway, I will check mine tomorrow.

Bob Rip