float needle sticking????

[byg]

I have a 1971 25hp evinrude, when I first try to start it (cold) it almost appears to be locked up. I cant even get the pull rope to move,then if i work the throttle alittle forward and back it frees up. Someone told me that maybe the needle isnt seated, dirty or worn and gas is getting in combustion chamber,causing hydro lock also washing all the lube out.It is in neutral when trying to start and it has ran good up to this point,although it has developed a slight miss, not bad, but enough to notice.The miss developed about the same time as the locking deal.Also, why would moving the throttle (giving gas)make any difference when not running? Doesnt it need vacuum for the pump to work? I read on here where if the sun beats on your portable tank it can develope lot of pressure and push past the needle when ya hook fuel
line up.But there shouldnt be any fuel pressure until I prime the bulb.
It has only happened once I believe after I have ran it and stopped to fish for awhile. Am I on the right track(float needle?)Any thoughts or advise is appreciated
Thanks

 

[James R]

Re: float needle sticking????

That is a lot of nonsense about fuel and combustion chambers. Sounds like the spark is coming early. If my memory is correct and sometimes it is not, you have points in that ignition. Sounds like you need to have them replaced and set correctly.

 

[Rick.]

Re: float needle sticking????

The needle thing is bunk. I don't know your engine but the 9.9 and 15 models have a feature that prevents them from starting if the throttle is set too high or the engine is in gear. It basically locks the rewind so you can't pull it. Could that be your situation as you say fiddling with the throttle frees it up? Best of luck. Rick.

 

[Chinewalker]

Re: float needle sticking????

On the rear of the motor block is a plastic arm that engages the recoil to lock it should your throttle be set too high... Slow the throttle and it disengages, allowing you to pull it over...

 

[byg]

Re: float needle sticking????

Thanks for the reply's.....You guys nailed it..I didnt realize I had the throttle twisted enough to lock it,but I checked and sure enought that was what was happening,I think the spring(?) that returns it to normal is a little weak though, might of been sticking.All is well Thanks Again