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read this thread. https://www.mytractorforum.com/threads/honda-76221-750-000-ht3813-deck-spindle-pulley.1379461/

^^^^What others have written above^^^^ The company is Dana-Spicer. They typically label their equipment Dana. I think Allison bought them. Also sold as Foote corporation products, or sometimes private labeled for companies like Craftsman, John-Deere etc., Husqvarna. With the age of the unit...

make sure that the RPM is down and not just the speed at which things are happening. Slipping belts and transmissions will slow things down even though an engine is performing flawlessly.

so which cylinder is not performing well? Make model serial number. How many hours on the engine. Is the RPM down or just the speed?

labor is cheap these days. Mark the rocks, and hire someone to remove them. As for roots, that is a species and soil compaction issue. Often digging the root up can damage the tree. So have to make a different kind of decision on that. Maybe make some planter beds around the root areas that are...

we have the same issue with classic VWs. The main culprit is that the condensers don't hold their value and it causes the points to arc too much when they open and close. That causes high resistance. I have found that the best solution for new points and condensers is Echlin at NAPA. If one can...

thank you for sharing. Someone will benefit from it when theirs dies the same way.

I would look at the ignition switch next. Also if it has a low oil switch and sensor that could cause it. Three things are needed for a gasoline engine to run. Spark, air/fuel, compression. One is missing. Help yourself solve the cause by first figuring which of the three are missing when it...

Most likely the starter is spinning but not moving out the gear to engage. There are many different types of starters so the rest is up to you. Some the solenoid controls it, some are forced out by the spinning action. Worn gear, broken teeth on the flywheel, broken parts in the "bendix," some...

Slightly loosen the fuel cap and see if that helps. It may be pulling a vacuum. Also tight valves can do that. a bad plug can too, and with all the counterfeits coming from online retailers, and off brands, that is a possiblity too.

many are not aware that spark distance gets less and less as compression goes up. Weak spark on a plug outside the cylinder may be no spark with compression. My favorite tool for checking spark is an inductive timing light. One needs 12v for many of them. There are rechargeable battery powered...

I did it for a living in a machine shop many years ago, learning that trade from a master who built engines and racing cars for the Unser family and others. Also street cars, classic cars, fleet cars, motorcyles etc.. Generally the bore is sized to the individual piston. It is not cost effective...

If this is the DuraForce engine, below is from LawnBoys web page FAQ at Archive.org about 2000. If you still have the manual it should be in there. If not, Ebay has them for sale as low as $7. Q: What about oil needs? How do the needs of this engine compare to those of a four-cycle engine? A...

replacing the diaphragm is what probably fixed it. Those carbs don't last all that long if fuel is left in them when shut off. I finally got years of service without problems by completely draining the tank after every use, and running the engine until it died. That was true for multiple...

the next thing would be to look for a vacuum leak. There are engines that have, for example plastic intake manifolds, that can crack. The symptoms you have listed are either lack of fuel or too much air. Bad fuel acts the same as lack of fuel. See if the engine runs better with the choke...

just replace it

how old is the fuel?

where are you measuring between and what are the conditions? Measure between the two battery terminals. If it is still 2.86V then you may have reversed polarity in the battery, regulator or meter.

did you check to see if a wire is grounding out?

check the exhaust spark arrestor screen if it has one. Make sure you are using plugs acquired locally thru Napa, Autozone etc., and not thru the big online retailers of generic goods. Lots of counterfeits out there. Check the ait filter too. And I am hoping the gasoline is fresh and not more...

search for a 1/2" x 107" belt is what I might do. Searching by part number sometimes yields more answers, and sometimes less.

I'll take "what is FD14AB01 05360 for $100 please." Sort of hard to reconstuct something like that because he could be the 10th guy who has made changes on it. Is the pulley on the engine even the correct one? Do you have the proper belts? Were they routed properly? Not the answer you want to...

as StarTech suggested. Look for voltage at the purple wire at the PTO switch. If not go back to A1 on the main switch. Does the hour meter run. It gets its power the same place according to the wiring diagram. No one disconnected the hour meter did they?

Did the problem begin before he did the maintence, with him thinking the maintenance would stop it. Or did it start as a result of the maintenance? If he replaced the spark plugs and bought them online, there is a chance they are counterfeit and no good. If they are torch brand plugs, there is...

https://www.foxnews.com/tech/robot-mower-flaw-could-open-home-network

did you check all the cooling tin to be sure it is not plugged with a rodent nest, so mch that it is overheating? Did you check the exhaust and spark screen if it has one to be sure they are not plugged so much that exhaust pressure builds up and pushes oil out thru the breather due to excessive...

you never wire brush the tip of spark plugs. The ceramic will pick up metal off the wire brush and short out the plugs. Now you need new plugs. Do not buy them online because of all the counterfeits. Get them from a local place like NAPA or your local mower shop. No torch brand. Run some HEET...

I think Honda pulled out of the small mower market in 2024. Might find Toro parts and service easier to come by. I would keep both for a season and see which one I liked the most.

inverse square law applies. The magnetic force at .015" is only twenty-five percent that of .0075" The magnetic field strengh is inversely proportional to the square of the distance from the source. At double the distance the field has to disburse over 4 times the area so it is only 1/4 the...

sounds like you solved it

what does the manual say is needed?

also see https://lawnmowerforum.com/threads/no-spark.81114/

without more information it is hard to answer. Maybe others might know what engine you have but my guess is most would not. Is it one cylinder, two cylinder, overhead valve, L-head. How does the throttle work, is it one speed fits all or a variable throttle? Four stroke or two stroke? Belt...

post the brand mower, model and serial number to see if someone can find a schematic for it. Just wiring things together hoping to find the magic combination may result in permanent damage to your mower.

I'd look closer to see for sure where it is coming from. More than once I have read or have seen someone with a mouse nest smoking. Another long shot would be a broken crankcase breather dumping oil fumes out. If so then I would be concerned about the quality of the oil.

sounds like you have both a problem with crankcase pressure and a problem with intake leakage or a lean fuel delivery. You'll need to do a leakdown test to find where the excess pressure is coming from. You might also want to look at the hoses off the crankcase to the air cleaner to see if one...

Something in the choke mechanism is on the fritz or there is an intake manifold leak. Probably needs valve clearances checked too as Slomo suggested.

I looked at the parts diagram and a blow up of the major carb parts kit MTD 951-12779. It does not have a seat in it so most likely the seat is not replaceable. I would use something soft like a q-tip to clean it, or if that is too wide, a soft match stick or a small soft brush and blow it out...

hit by a parts cannon misfire, eh?

glad you got it out. There was a chance that the bolt would not seat or worse. Put grease on that seal and clean it will before putting the pulley on or the rust and grit will eat the seal.

before replacing a coil I would check its grounding, and for rodent damage around it. Also be cautious if the spark plugs were sourced online thru some of the discount sites. Lots of counterfeit plugs around that look very much like the originals. Those do act up and cause intermittent dropout.

depends on the seat. Some have a small plastic or rubber seat that a tool extracts and replaces them. Most mower carbs etc., use either a non-replaceable seat or one of those. Autos from pre FI used to have the brass seats that unscrewed like a main jet. Seats are on/off. Main jets depend on...

put the correct amount of fuel dryer in the tank and see if it improves. Sounds like either debris in the tank blocking the outlet, or a little water in the fuel.

5 psi is a lot for any carb. Yes they will hold but it is still a lot. We used to set the psi to 2 -3 psi on our racing cars. I would use magnification to check the needle. If the seat was replaced, was the correct tool used?

white or gray? White smoke is moisture. Gray is oil. Does this engine have a radiator and water cooling system? If so I would check the cylinders with a bore scope as soon as possible to see if there is evidence of moisture in the cylinder. Water in a cylinder could hydrolock an engine, bend a...

According to Google AI

Since it is not electrical, I see no reason why not but just a tiny bit because it can dry and get gummy. Maybe a tiny touch of silicone grease would work better. If there is dirt etc., in the housing, maybe a small bristle brush and some brake cleaner might clean it out. If you think that might...

usually the choke is only needed on an engine to start it. Once an engine is running properly, the choke can be disengaged within 10 seconds to a minute depending on the engine.

Maybe ask google? 1st suggestion when I asked was a series of videos how to remove it. Apparently they are often stuck in but with the right technique will come out.

fuel toair compression spark If spark is missing on that side, need to figure out why. People will want to know the exact engine model, and serial number to assist beyond that.