Help: Lawn-Boy 21" SilverPro Series, 10247, DuraForce (2-cycle) behaving badly

[dewguy1999]

Re: Help: Lawn-Boy 21" SilverPro Series, 10247, DuraForce (2-cycle) behaving badly

I received my length of new fuel line yesterday (still waiting on the shut-off valve) and realized that it may not be the correct kind for a 2-cycle engine (gas/oil mix) or for gas containing ethanol.

This is what I purchased, FUEL LINE 1/4" x 1/2" SOLD BY THE FOOT - SAME AS WHAT YOU HAVE ON YOUR MACHINE
Marked on it is: 1/4" (6.35mm) I.D. SAE-30R7-KX 078698506012 - MADE IN U.S.A. 04 16 13

Is it good for 2-cycle fuel mix? Is it good for gas with ethanol?

 

[Phototone]

Re: Help: Lawn-Boy 21" SilverPro Series, 10247, DuraForce (2-cycle) behaving badly

I received my length of new fuel line yesterday (still waiting on the shut-off valve) and realized that it may not be the correct kind for a 2-cycle engine (gas/oil mix) or for gas containing ethanol.

This is what I purchased, FUEL LINE 1/4" x 1/2" SOLD BY THE FOOT - SAME AS WHAT YOU HAVE ON YOUR MACHINE
Marked on it is: 1/4" (6.35mm) I.D. SAE-30R7-KX 078698506012 - MADE IN U.S.A. 04 16 13

Is it good for 2-cycle fuel mix? Is it good for gas with ethanol?

If it is true "Fuel Line" it should last a long time. You shouldn't use Ethanol fuel, really. But for running issues, not fuel line issues.

 

[dewguy1999]

Re: Help: Lawn-Boy 21" SilverPro Series, 10247, DuraForce (2-cycle) behaving badly

If it is true "Fuel Line" it should last a long time. You shouldn't use Ethanol fuel, really. But for running issues, not fuel line issues.

The seller listed it as "Fuel Line" and from other info on the net it does seem to be that, but I couldn't find any thing conclusive about using gas with ethanol or 2-cycle fuel mix and that's why I asked about it here. I now know that I shouldn't be using gas with ethanol, but I currently have some and planned on finishing out this season with it hence my concern about it being a issue with the fuel line.

 

[lawnboywillneverdie]

Re: Help: Lawn-Boy 21" SilverPro Series, 10247, DuraForce (2-cycle) behaving badly

hey i am just wondering if a gasket is going bad on my mower. heres how it goes. to start i turn on the fuel shut off valve prime it once and start on low throttle and it comes alive but with one problem, after mowing i notice a bit of oil on the back right of the mower deck. i check the engine mounting plate (named it wrong i bet) and a good amount of oil residue is covering it. but when i check the muffler inspection plate under the deck, its just fine with minimal oil. the lower crankcase seal is not even a year old and i don't want to replace that P.I.T.A. part again. any suggestions? will post pics in a min. just ask what you need pic of and ill get it as soon as i have the time to do it.(probably soon after you ask)

 

[Phototone]

Re: Help: Lawn-Boy 21" SilverPro Series, 10247, DuraForce (2-cycle) behaving badly

Your "oil" could be seepage from a carb float bowl with the float needle not seating, or the float set too high, thus allowing gas/oil to seep out float bowl gasket. It could also be a slight crack in the gas tank (it does happen), or a crack at the tank nipple.

 

[dewguy1999]

Re: Help: Lawn-Boy 21" SilverPro Series, 10247, DuraForce (2-cycle) behaving badly

Your "oil" could be seepage from a carb float bowl with the float needle not seating, or the float set too high, thus allowing gas/oil to seep out float bowl gasket. It could also be a slight crack in the gas tank (it does happen), or a crack at the tank nipple.

If it is the fuel tank leaking, it's possible that it's covered under this Lawn-Boy recall, CPSC, Lawn-Boy Inc. Announce Recall of Power Mowers.

 

[beg]

Re: Help: Lawn-Boy 21" SilverPro Series, 10247, DuraForce (2-cycle) behaving badly

a little oil on the deck ey.I had one that did that too.smoked like a well we better not say it here but it went away after awhile like 20 minutes of run time.cuase was a flooded out crankcase due to fuel seepage.If your mower runs okay just run it.Also not to bring it up again but Stihl synthetic at 50 to one ratio sweems to be the way to go and oh yeah PREMIUM NON ETHANOL ONLY

 

[dewguy1999]

Re: Help: Lawn-Boy 21" SilverPro Series, 10247, DuraForce (2-cycle) behaving badly

Last Wednesday in anticipation of installing the new fuel line and shut-off valve I drained the tank on the Lawn-Boy. Well, as fate would have it I still haven't received my shut-off valve and the lawn is over due for a cutting so I filled the tank back up and guess what...it won't start. I feel like I'm performing voodoo each time I get it to start and don't have any idea why it does start when it does versus the times it won't. I don't have the patience for voodoo today. I'm waving the white flag. I give up. :-(

 

[bt3]

Re: Help: Lawn-Boy 21" SilverPro Series, 10247, DuraForce (2-cycle) behaving badly

Ah, Lawnboy starting issues. That's a first. :smile:

All kidding aside, I'm surprised I'm such a fan with all the issues I've had with my L21zsm over the years. But like I posted in another thread, I've become so good at tinkering with the mower, I know it better than any mower I have ever had. Because I have worked on it so much, I am pretty confident that it will start and mow... most of the time anyway.

I know it's maddening when you can't get a mower started and then suddenly it starts, and than does not start again. I've had that happen to me on the LawnBoy.

I've had issues with carbon and sludge in the exhaust ports and muffler causing starting and running issues. I've had Carb issues galore. I've taken apart and cleaned and serviced the Carb four times since I've owned the mower. I had a governor issue causing me grief for an entire season, only to find it was simply a dirty pivot point and nothing more. A few shots of carb cleaner on the pivot at the bottom of the wind Vane and some penetrating oil and it was finally fixed after a summer's worth of misery. I had a spark plug new out of the box that was bad. I have had a fuel tank vent clog and give me a headache trying to find out why the mower was dying after running for a while. And I've had problems with the ignition coil(s). This last one is OEM and has lasted me 3 years by the grace of the almighty. Lucky I guess.

Your Duraforce is one hellava motor. I'm sure you'll get it fixed. Once you do that's another notch in the knowledge belt. Over time, if you stick with it, you'll become good at diagnosing and servicing it. Trust me. When I first bought my LawnBoy, I only checked Oil in my Snapper, put in gas and pulled the starter cord. Now with LawnBoy, I am more like I'm an old Steam Locomotive Engineer and I've got to keep the old girl running through constant tweaking!

Some may frown on this suggestion, but have you ever bought a can of Ether (Quick Start Spray) and tried that? This is a quick way to start a stubborn small engine. Spray a little bit into the Carb intake and give it a pull. Chances are good it will fire up with that spray. I have started many stubborn to start mowers over the years with a quick spray of starting fluid.

 

[beg]

Re: Help: Lawn-Boy 21" SilverPro Series, 10247, DuraForce (2-cycle) behaving badly

check for spark.if you have spark spray some starting fluid or carb cleaner in the plug hole and replace the plug if it pops but dies you got carb issues such as a clogged main jet.dont give up its worth the trouble new mowers are not like a duraforce.once you get in your groove its a snap to work on one