91' 250 Oil Pump Sticky?

[Salty Dog]

I decided to sync the carbs on my port motor. Now the oil pump keeps the throttle open a bit on the 3 port carbs. With the rod off of the engine it goes back to idle fine. When I move the rod with my hand the pump feels like it hangs up occasionally. Anyone seen this before?

I have done some searching and see that the OX66 motors can be set with a feeler gauge. Can I do that with mine also?

I doubt this pump has ever been adjusted since it was new so I must have annoyed it.

Thanks

 

[Salty Dog]

Re: 91' 250 Oil Pump Sticky?

No one local has one in stock and I can get a used one from a S225TXRU. Will this work?

 

[rodbolt]

Re: 91' 250 Oil Pump Sticky?

NO the pumps are engine specific.
I would bet you simply did the procedure incorrectly.
to do it you have to dissconnect the pump arm, back off the idle screw completely, adjust the trottle levers following the EXACT procedure in the manual, then check the TPS reference voltage.
the last step, with throttles still fully closed ,NOT on the idle stop, will be to adjust the pump link arm so you have between .005" and .020" clearence between the stopper and the pump arm, if not done correctly the stopper can now try to act like an idle stop. this is what I suspect you have done.
the 3.1 Carb motors are the most complex and easiest to screw up the link and sync, I see it kick butt on even trained techs.
the procedure MUST be done step by step as per the service manual, no step skipping or winging it allowed.
I dont have my manuals here so I cant explain much better.

 

[Salty Dog]

Re: 91' 250 Oil Pump Sticky?

thanks rodbolt

I took the arm off the pump and it stiil seems to have a sticky spot.

I have a factory manual and I'll try it again with a feeler gauge

 

[rodbolt]

Re: 91' 250 Oil Pump Sticky?

with the engine off a sticky spot is normal, see it all the time, try it with the engine running and see.
its very very rare to see that pump fail unless debris was introduced due to impropper oil tank cleaning or screen removal.

 

[Salty Dog]

Re: 91' 250 Oil Pump Sticky?

thanks rodbolt

I'll check it tomorrow after work.

Is there a trick to putting the spring on or just lay it in place?

 

[rodbolt]

Re: 91' 250 Oil Pump Sticky?

what spring? if you have removed a spring something is very very wrong.

 

[Salty Dog]

Re: 91' 250 Oil Pump Sticky?

I romeved the nut, washer, linkage arm and spring on the oil pump.

 

[rodbolt]

Re: 91' 250 Oil Pump Sticky?

you either dont have a service manual or your refusing to read it, I cant think of an instance to ever remove that nut nor spring.
is is to hard to ask to simply follow the manual step by step and trust me it will work right first time everytime.
but to answer your question? I dunno, never had a reason nor a service procedure that required removal.
look at how its wound on the other engine.
salty, lets not mke a fairly complex(ie many steps involved) procedure anymore difficult than it is, by winging it.
the object is to make all shutters closed, then lock all the links in the pattern in the manual, then make sure the TPS reference and outputs are correct then set the arm on the oil pump between .005" and .o20" the average joe can actually eyeball it, then setting the throttle using the idle stop screw to the correct idle speed.
thats all your trying to do,
follow the manual step by step and it will walk you through it quite nicely.

 

[Salty Dog]

Re: 91' 250 Oil Pump Sticky?

the local Yam dealer said the new pump didn't include those parts so I figured they would have to be swapped anyway. I just wanted to see if they were causing the sticking problem.

 

[rodbolt]

Re: 91' 250 Oil Pump Sticky?

I dont think you had a pump problem.
its quite normal to see a sticky spot when moving the arm with the engine off,
find another dealer as the pump comes complete and ready to install, however even with a new pump you still have to do the link and sync all over again so why not try it step by step from the manual and see what happens.
but its imperative to follow the steps from the manual step by silly step.
its a long one but its the only way it will work correctly.

 

[Salty Dog]

Re: 91' 250 Oil Pump Sticky?

thank rodbolt

After 12 years of living in Floriduh I've given up on service here and try and do everything myself.

 

[BruceAML]

Re: 91' 250 Oil Pump Sticky?

The original oil injection pump has been replaced by this part number:

62J-13200-00-00. What is the complete model number of your motor. Has the oil pump ever been replaced?

 

[Salty Dog]

Re: 91' 250 Oil Pump Sticky?

250txrp

 

[Salty Dog]

Re: 91' 250 Oil Pump Sticky?

Set both oil pumps with a feeler gauge. Much better way to do it! I wonder why they factory manual doesn't say to do it that way.

Starboard motor oil pumps still sticks even with engine running and linkage disconnected.

Does the pump come with the o ring or any clamps or other parts?

Thanks

 

[rodbolt]

Re: 91' 250 Oil Pump Sticky?

factory manual DOES say to set the proper clearence.
DO NOT set it up like an OX66, its not an OX 66 motor its a V76.
very different set up
doing it yourself is great, follow the factory manual step by step and it works right first time every time.

 

[Salty Dog]

Re: 91' 250 Oil Pump Sticky?

I have the V76 manual. I'll double check it tonight. Thanks

 

[Salty Dog]

Re: 91' 250 Oil Pump Sticky?

My manual is LIT-18616-01-14 and I don't see anything about a feeler gauge. There must be better manuals out there.

Is it posible that the oil pump drive gear is causing the pump to hang up?

Thanks

 

[BruceAML]

Re: 91' 250 Oil Pump Sticky?

Call up Yamaha customer service at (866) 894-1626 and ask them what the difference is between the original oil injection pump part number 61A-13200-01-00 and the replacement oil injection pump part number 62J-13200-00-00. Ask if there is a technical bulletin pertaining to the new pump

 

[Salty Dog]

Re: 91' 250 Oil Pump Sticky?

Will do, thanks