Sears 1970 5hp carb help!

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shovelhead82

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Joined
Jun 28, 2010
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I have a 1970 Sears 5hp that was sitting for maybe 20 years, I rebuilt the carb WITHOUT parts, changed the gear oil and tested her out with my boy on the reservoir after running in a barrel...it was a less than stellar trip as the motor would run for a few minutes, then die, start again, die ect. I hobbled home and with help from posts here got some carb parts. Rebuilt the carb again and I believe my problem might be solved altho I only ran it in a barrel so far.
My question to guys who know this motor is my old inlet needle had a spring attached to the top, the new one has a bent wire clip which really can not be used from what I can see. After fooling around with it, I installed the new needle without the wire clip, it started up and ran better than ever as I stated above but I wonder if this will cause problems. I have an original manual and it clearly shows the needle with the spring like my original. The new needle will not accept a spring unless maybe modified. I'm planning another test this wkd so I thought I'd toss this around with knowledgeable types!
Thanks, Art
 
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shovelhead82

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Jun 28, 2010
Messages
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Re: Sears 1970 5hp carb help!

So that was what the small rubber piece was.....duh? Thing is my original manual of course does not show that at all, since it's an update using the viton seal. I will redo this baby once again maybe the right way this time. I appreciate it, and by the way that is quite a manual, I think I'm all set now!

Thanks, Art
 
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shovelhead82

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Jun 28, 2010
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Re: Sears 1970 5hp carb help!

One more question Mr Crabs ( great name). The manual you generously provided does assume one has the viton seat and are replacing with same. Any suggestions on getting what appeared to be the brass seat out without causing any mayhem? My old needle had a rubber tip fitting into the brass seat.
Thanks again
 
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mrcrabs

Guest
Re: Sears 1970 5hp carb help!

I don't know with out looking at it myself, I know they can be upgraded, some early information I have shows it being drilled out....
 
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MahtyMaht

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Apr 7, 2010
Messages
605
Re: Sears 1970 5hp carb help!

My neighbor has about a '68 3Hp. It kept blowing fuel out the overflow. It took me for-EVER to figure out that all these small engine shops were selling me the same wrong aluminum needle that was in it when my neighbor got it. I finally decided to test my theory, and I spliced a viton tipped needle out of a weedeater onto an aluminum needle, reset the float, and he's been running around in his boat with it all summer. He calls it The Tower of Power. I got no idea how to explain to the parts people about the viton tipped needle - they've never heard of it.
 
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Tom @ Buzzard Bluff

Petty Officer 1st Class
Joined
Apr 7, 2010
Messages
375
Re: Sears 1970 5hp carb help!

<I got no idea how to explain to the parts people about the viton tipped needle - they've never heard of it.>

Some small engine shop comments relative to our air-cooled outboards----

#1 Never tell a person behind the parts counter that the part you're looking for came from an outboard motor! If you do that you will instantly witness the light of intelligence in his eyes dim and wink out as he mutters "We don't stock outboard parts". Make up a plausible lie instead---"It came off of an old snowblower in Grandpas shed---can't even find a brand name on it".

#2 If the parts person sez "Can't help you without a make and model #" leave then---he's telling the truth----about his own ability and intentions.

#3 The modern, slick and shiny small-engine supermarket type facilities are NOT the place to get help. Nobody there knows about anything prior to going to work there!

#4 For our purposes an old, grubby 'lawnmower shop' that looks like it's been there since Noah wheeled his mower aboard the Ark and pulled up the boarding ramp is the place we want to find. If it's a one-man operation by a crusty old character who not only does the work but orders his parts himself so much the better! Not only does he know all the tricks but also what non-standard parts can be substituted for those no longer available as well as what WON'T work. Like the best gunsmiths he's often a crusty, opinionated individual who doesn't gladly suffers fools, but he's worth cultivating. Almost always he has a well hidden soft spot. Figure that out and cater to it and you'll be "In like Flynn".
 
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