Search results

I am now thinking that the fuel was stale. I mixed a batch of fresh fuel, and the problem ceased. It is now a sweet running 52339! Thanks for the replies. Franchi

Yes, everything is clean! The fact that the needle Has NO effect on how the engine runs has me stumped. It has always worked in the past. A needle and seat can not be a mystery, can it? Turn it in= less fuel. Turn it out = more fuel! In this case, the needle does not make any...

Hello All: My 5239 mower surges or hunts during use. It starts on the first pull but acts as if it is starving for fuel. Adjusting the needle makes no difference as I can turn the needle until it hits the bottom of the engine and no change! I just rebuilt the carb so it is very clean...

Hi: Thanks for the tip re. magnets glued into sockets. I will try it.

Yes, the short block is the correct replacement.

Hello LB people: I am about to begin the task of replacing the engine on my 5024 LB mower. I am asking for tips and information re. this job. I looked at the service manual and it looks quite involved and time consuming. Suggestions/Comments, Tia Franchi

I use the old paper towel on the socket trick to insert the problem screw into the mower. It worked the first try! I have used and taught that trick for years, but yesterday I forgot it. Lol Franchi

What years, models etc. Tia, Franchi

Thanks for the help! Where does on purchase a magnetic nut driver? I knew about placing padding in a socket to help hold a bolt but again old age got me. I have to place ALL of the parts that I remove in one container as not to lose them! The same with all of the tools...

I bought a new short block from my dealer for $40.00 so I hope to make the conversion soon. Thanks for the replies Franchi

Today I spent three hours attempting to assemble and attach the starter to a Lawnboy 5239 mower. Despite following the instructions from the service manual, I did not get it done. The big problem is placing the small 7/16" screw that holds the starter to the engine. Is it easier to remove the...

Due to health reasons I am offering for sale the following: One Lawnboy Brickhead mower that is is in good shape BUT has a bent shaft. The mower runs perfectly but has a slight vibration felt in the handle. The numbers for the mower are: Model number is 5024 and the serial number is...

Hello All: I am having problems with my Lawnboy 5239 mower. The serial number is: 5966717. The problem no 1 is that the primer does not work. It was replaced a few years ago but since has not been lifting fuel into the carb. The problem no 2 is that the long...

Hello All: I put 93 octane gasoline in my JD LT 110 to see if there was any difference in the way that it would run. WOW! What an improvement! It appeared to start faster and run much smoother with more power than the 86 octane that I had been using. Perhaps I was just fooling...

Hi All: What was the year of manufacture for this mower? I have been searching for awhile but to no avail. I have a feeling that it is a 1979 model. WAG...

Hi All: Now that I have a new short block, what is the best way to proceed to swap it onto my old mower? I am asking as to avoid mistakes. Are there definite steps that must be carried out in a specific order? IIs there posts here or other sources that I may refer to make this as...

My dealer called today and said that she found a SB that had been in her shop for a very long time. There were no papers of numbers with it so we guessed that it may work. She charged me a whopping $40.00 for it! Where are there any identifying information on this block? This is for my 5024...

Hi All: My two 19" LB mowers each tested at 70 psi. with dry cylinders. They both run and start great. Is this pressure good enough to continue using? Should I do a compression test after adding a bit of oil to the cylinder. Of course this may add considerable bit of compression to...

Hi All: How may I stop the gas from dripping from the carb throat while my 5239 is not running? In the past, I have changed the needle and seat, adjusted the float height and checked float for gasoline l fouling . What am I missing? If I fail to shut the tank off, the entire tank will...

I talked to a dealer today and she suggested that she could sell me a short block for my Brick Top for a "good price." If true, what is a good price and how can I determine if I have the correct short block for my engine? Are the internals close enough that the sb would interchange? Perhaps I...

Hi All: I need a straight crankshaft for a 5024 Brick top. What other cranks can I use in this engine? What are the differences in these LB Brick top internal parts? Any suggestions/comments...

Hello All: If you bushed the wheels on a LB mower, what are your opinions of doing this modification. Was it easy, cost, favourable results. did it make pushing the mower easier to push, what tools did you use. where did you source the bushings, would you recommend doing this job etc...

Hi Folks: I recently bought a LB 5024 mower that appeared to be in bad shape for $20.00. The owner told me that the crank was shot due to him running straight gas thriugh it. It was paked in the barn covered by many other pieces of non working farm equipment. Talk about guano???? I...

Hi All: A Tip re, no spark. I lost the spark on my LB 8231. After thinking about it for awhile, I thought that I would clean all the metal to metal contacts that the CD pack made. I removed all of the oxidation from the areas where the mounting screws went through the pack on the...

Hi All: I need a coil, magneto, for my 8231 mower. Serial number is 6564178. Where may I find one? What is the part number? Is there an other coil that may be substituted for this coil...

Hi All: I need to repair two LB with 406 engines. The problem on both is the same: no fuel is injected into the carb when the primer plunger is activated. I have cleaned the carbs and they all work well after being hand primed. The gasoline just squirts out around the plunger. Yes, the...

Hi: If you can hook me up with some wheels or tell me where I may purchase some, I would really appreciate the deed. Tia...

Hi All: I need help in adjusting the carb mixture on my 5239 engine. I can get a clean exhaust with very little smoke or I can richen the mixture to where I get a smoky exhaust but it will start first pull hot or cold. What can I do to get easy starting without the rich smoky exhaust...

Hello All: What is the easiest way to replace the starter spring and rope on the older LB engines. I am asking about the D engines, 400. and 600 series engines. The engine is a 406 not a 604 as listed in the title. I have the factory manuals but I have yet to have a pleasant...

Hi All: I have replaced the bulb, hose and checked that were no leaks anywhere but I still do not get enough prime into the engine to enable he engine to start. What is wrong...

Hi All: I just rebuilt a carb on a LB 5239 mower that has a D 400 engine and a Type A carb. The problem is that the fuel is blowing past the primer plunger into the air and not being forced into the throat of the carb. I cleaned the carb and blew out all of the passages with high...

Hi all: I have a LB 8231 mower that is difficult to start when the mower is cold. It hot starts on the first pull as it should. Here is what I have done to the engine: The spark is very hot. The fuel primer emits a copious amount of fuel when the primer bulb has...

Hello: I am thinking of switching to a synthetic oil to clean the carbon deposits from the piston, cylinder and rings of my two 1970's Lawn Boy mowers. Has anybody had success with this happening? If so, what oil did you find cleaned your engine...

Hello All: I have a Lawn Boy 8231 that has a low speed urging problem that I do not think is fuel related. Instead of fuel related problem, I think that I have found the trouble to be caused by slack in the spring that is connected to the governor. The speed of this engine...

Helloi All: I am atttempting to get a Lawnboy model 7263 to run well. Right now it is so lean that it only fires about every 12-20 th rotation of the blade. I can start it by spraying carb cleaner into the carb but it will barely run after started. I can cover the carb throat at about...

Hi: My 1971 Lawnboy requires a 16-1 mix. The only problem is that the exhaust smokes clouds the neighborhood. It is quite embarrasing for us to cut the lawn. How can I cure this problem? and still maintain a 16-1 mix? I have been using Lawnboy oil and Sthil oil. No cheap or...

Hi Again: My Lawnboy 5239 stopped a year to the day after I put a new coil in it! The ground wire that connects to under the coil broke off nearly flush with the coil! This is a very small wire that does not take vibration well! Any ideas as to how I may make this wire a bit more...

Hi Gang: This year, I went fron a 16-1 to a 32-1 mix for my Lawn boy with a model number of 5239 and a serial number number of 5988717. Is this enough oil? I have information stating that this mower was made in both 1971 and 1975! LOL The 16-1 smoked a great deal but I did not have any...

Hi All: I need the correct part number for a coil for my mower. The mower's model is 5239 and the serial number is 5988717. Can anybody kindly forward me the correct part mumber...

Hi Fellow LB fanatics: I was elated today when I got my 1971 model 5239 out for the first time since last Fall, it started and ran on the first pull of the rope! I have had that machine for a long time and had to replace the coil about two years ago. For trimming the yard...

I have a 1970-71 D400 mower and an newer mower with a F engine. I run 16:1 oil gas in the D400 and 32:1 in the F engine. Is this correct? To avoid having two cans of different fuel mixes, could I just run both engines on a 16:1 mix? Any damage to the F engine if I do this...

Hi LB Fans: Today the wife and I came up with an idea to help us to stay in shape. We try to hike several miles per day for our exercise regimen. I suggested the we mow our yard, one acre, with our two 19" Lawnboy push mowers. This will provide us with good exercise while keeping...

Hi: I am going to store an older lawn Boy and my questions are this: What should I do to prepare it for storage? I will oil the cylinder well and pull the starter rope to spread the oil throughout the cylinder. I have run the engine dry of fuel. I will check to see if there is...

I talked to my sister today and when I told her that I just bought a 19" LB she said,"Do you remember that little mower that you fixed for me back in the 80's? "That was the best mower that I have ever had!" It was a LB 19". Another reason I only will buy and us a LB mower! To use one is...

Hi: The other day I drove 150 miles to buy a LB mower. The trip took 3 hours to and three hours back and the cost was: $125.00 for the mower $24.00 turnpike fees $50.00 for gasoline What I purchased was a LB 19" model 5247 serial number 94078468. The mower had all of the...

Hello: My "new" 5247 mower will no longer start! It started pretty good at first but now it will not even kick. I experimented with the number of shots of prime I put into the engine but to no avail. The PO wrote that it took 6 shots of prime cold and none hot for one pull starts...

Hi: I just bought a new LB mower. I would like to determine what model it is and when it was manufactured. The model number is5247 and the code is 9407848. It is 19" push mower with what I believe is a D-600 engine. My books do not show this model number...

HI Gang: I recently rebuilt the fuel, spark and governor systems on my 1970 Lawnboy. I have found that parts are very difficult to find and they have become very expensive. I recently paid $50.00 for a governor rebuild kit for my mower! I was told that I was very lucky to get it as...

Hi Again: I found the correct replacement for a flywheel for my model 5239 that is equipped with a D 408 engine. The problem is now the governor lever is rubbing on the bottom of the flywheel when the engine is turned over. It is rubbing right at the crease tht is provided for fine...

When I got a replacement coil for my 5239, it did not have a high tension lead attached, The shop that sold me the coil gave me a piece of HT wire, crimp on lead and a rubber boot. The HT lead was pushed into the coil where it was pierced by a barb in the bottom of the hole where the HT...