Question about Tecumseh Lawn Boy Push Mowers Insight Silver Powered Series - Sens - A - Speed Walk Behind Mower - 10685

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What is the gas/oil mixture for a Lawn Boy Silver Series 2 cycle mower?

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40:1

Posted on Aug 30, 2010

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Oil mixture for 1985f series 2 cycle lawn-boy mower


Contact your dealer ! but 32:1 sounds correct. 8 ounces of Lawnboy oil to two gallons of gasoline ....is 32:1, 8 ounces of oil to one gallon of fuel is 16:1 for the real old lawnboys,
When Toro bought out OMC,and started using Tecumseh mowers,the ratio changed in the late 80's or early nineties ! IIRC :o)

Jun 11, 2014 | Tecumseh Lawn Boy Push Mowers Insight...

1 Answer

I have MTD Yard machine and don't know if it is 2 or 4 cycle. Oil should be-SAE30. Can I use oil for 4-cycle which they soid me i Can. Tire.(M otomaster)


If your mower has seperate fill caps for the oil and the gasoline, then you have a 4 cycle or 4 stroke engine. In this case use SAE HD30 motor oil. If there is only 1 fill cap and it says oil & fuel mix, then you have a 2 cycle or 2 stroke engine.
Good luck

Sep 10, 2010 | Tecumseh Lawn Boy Push Mowers Insight...

1 Answer

Lawn boy 2 cycle mower won't start


Replace the spark plug and retry.
If a new plug does not work push the spring button on the bottom of the carburetor to make sure fresh fuel is in the fuel bowl.
if this does not work remove the spark plug and squirt some light oil (like wd 40) right into the spark plug hole; roll the engine over slowly a couple times using the starter rope. put the plug back in and snap the plug wire in place. If the mower now starts after a couple pulls it means the rings are worn, replace the rings.

May 29, 2010 | Tecumseh Lawn Boy Push Mowers Insight...

1 Answer

Lawn boy 2 cycle that smokes


Check the air breather. Make sure it is clean.

If it is clean, you will probably need to replace the diaphragm. A bad diaphragm will cause black smoke and also cause the mower to run erratically.

Jim

Jun 21, 2009 | Tecumseh Lawn Boy Push Mowers Insight...

1 Answer

Mower surging silver serieslawn boy 6.5 h.p. tecumseh motor model lev 120 spec 362006a. I cleaned out carb bought a rebuild kit replaced o rings in center jet and another under float also little metal...


let it surge, it will usually get better as it warms up. These 6.5 Hp engines are fine except they have an cheap badly designed carburator. Nothing can be done about this problem. They all surge eventually.

Jun 07, 2009 | Tecumseh Lawn Boy Push Mowers Insight...

1 Answer

Stalling


I have same mower and just fixed what seems like a similar problem description. I had gone down the fuel system route and the symptoms just didn't add up. Stopped abruptly w/o sputtering once I reached warm-up temp. Replaced the solid state ignition (34443C now part number 3444D). Problem corrected and just mowed my 1/3rd acre w/ no issues.

May 11, 2009 | Tecumseh Lawn Boy Push Mowers Insight...

3 Answers

I would push the prime button 3 or 4 times it starts then quiet


I took my carburetor off and blew it out with compressed air. Runs great now. Make sure to get all of it. Little screw on bottom has a hole in it too!

Apr 18, 2009 | Tecumseh Lawn Boy Push Mowers Insight...

1 Answer

What is the 2 cycle oil to gas mixture for a 2 cycle lawnboy


20:1 gas to oil is a good place to start. Some mowers thin down to 80:1. If you can tell me the model of the mower I can be more specific, but starting at 20:1 will assure you have adequate protection for the engine. If it's exhausting lots of oil smoke after it has warmed up; you can cut back a little each time until you have minor oil smoke.

at 20:1 you need to add 6.4 ounces of oil to one gallon of gas.

Here's a nifty calculator for various ratios:

http://www.csgnetwork.com/oilfuelcalc.html

Enter 1 gallon of gas, then change the ratio number and then press calculate and the number of ounces per gallon will be displayed.

Mar 29, 2009 | Tecumseh Lawn Boy Push Mowers Insight...

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