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Small Engine Tuneup (Tecumseh HS50)

Hello,

I have an old Toro 421 with a 5HP Tecumseh HS40-55531 3F.

Engine wouldn't start at all when I got it.
I replaced the carb and it then it took off on the second pull.
I'm trying to tune it up and I'm looking for specs on things such as spark plug choice/gap, point gap setting, oil type/capacity.

Here's what I've been able to gather so far:

Points 30547A
Condensor 30548B

Any help would be appreciated:

Thanks, Dan

Posted by on

  • worldwidedan Feb 23, 2009

    Thanks Jerr! - Very helpful

  • eric4brs Mar 02, 2009

    tecumseh 5hp snow blower stalls when I put load on engine how do i tune it under load

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5 Suggested Answers

  • 151 Answers

SOURCE: 93 Vw Fox tune up specs

no points on ur car (check from the center of distributor cap and follw that wire, it leads to the COIL) and gap is usually indicated under the hood on a sticker. Should be right near the front of the hood (on the underside) or just above the rad.

Posted on Nov 16, 2008

  • 138 Answers

SOURCE: starts runs min. or two then stops....

Go to toro.com then click customer care, then click manuals and parts. Type in model no. and download the owners manual. This should get you the spark and flywheel gap. Probably still something in the carb. Some orifices are very hard to find and to clean but they must be clean. Also check for dirt dopper nest in the muffler.

Posted on Apr 06, 2009

  • 15 Answers

SOURCE: briggs and stratton lawnmower 4horse power engine needegap specs on coil and points

That's easy man! You will always hear, "You sir, need to gap this or that at EXACTLY .00071542 inches per square meter".

The actual "poor boy fix"-

Put your magneto back on there, and stick a business card from your wallet in between it and the rotor. Let the magneto pull itself to it, you center it, and give it just a hair of breathing room (to slide the card back out). Tighten 'er down, and you got it.

1.- If you can't pull the card out, it is too tight.

2.- If you pull the card out easily, too loose.

3.- JUST enough to pull it out, and have it drag just a bit on the way out is JUST ENOUGH!

Remember, on 4-strokes, they ARE forgiving, and can do miracles even if you try your best to destroy them.

Posted on May 30, 2009

panilling9
  • 284 Answers

SOURCE: 4.5hp Sears/Tecumseh motor starts and dies in 5 - 10 seconds.

metal or plasic float?

Posted on Jun 21, 2009

garing
  • 998 Answers

SOURCE: My 550 series Bolens lawnmower won't start. When

keep pushing the prime button

Posted on Aug 08, 2009

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