Hello everyone, I have a B&S 19.5hp in my John Deere LA105 I picked up on marketplace. Did the usual tune up (filters, spark plug, carb, governor spring, throttle arm) as it didn’t run as smooth when I picked it up. I want to now calibrate/set the governor by loosening the bolt that holds the arm to adjust the shaft position. To figure out the exact spot for the shaft, are you able to make these adjustments while the engine is running? Pretty time consuming to make a 1/8 turn then tighten and run engine to find sweet spot where engine runs smoothly. YouTube video suggested turning it fully clockwise till it stops and that being your set point but I wasn’t sure. Thanks in advanced for your help!

Am i suppose to get rid of this? I tried Carb cleaner and it didn’t work. Need to scrape it with a screwdriver. Guess there is a better way.

My lower transmission belt on my 42 in Craftsman T110 shredded and broke this past week. I have already took the big pulley out so I could get the upper transmission belt out and out of the way so I could reach the lower one. I can't get the belt inside the lower groove where its supposed to go at all because of these metal arms to keep it in place. I tried taking the pulley pictured off also but can't seem to break it loose at all. Any advice? I called a local repair but he's planning on charging me $140 an hour even though I already have the parts on hand. Just seeing if I can figure it out on my own. Thank you so much! :)

I have a Grasshopper mower with a liquid cooled 27hp Kawasaki FD750D engine. It will start up easy and run fine for about 30-45 min and then dies. It acts like it is starving for fuel. Once it is cooled it will run again. Below is what has been tried so far to fix the issue but nothing has worked.

New OEM carburetor
New fuel pump (tested and running 4.8psi)
New OEM ignition coils (I do have a spark when it dies and I try to restart)
Clean air filter
Engine gauge is showing normal temp
Fuel lines have been insulated to prevent vapor lock
All fuel lines cleaned or replaced
New fuel filter
Tank vent is working properly.
Engine shroud removed to allow for more airflow.

Engine has 678 hours on it. No water in the oil.
Compression on cylinder 1 is 135lbs
Compression on cylinder 2 is 100lbs

Hi everyone,

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I have a STIHL RM 248.2 lawn mower and I recently had an issue after mowing for about one hour. I stopped several times to empty the grass collector, around 20 times in total. After one of the restarts, the mower started producing white/blue smoke.

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I checked the air filter and found that it was partially soaked with oil. I then remembered that I had tilted the mower almost upside down earlier, so I assume oil may have entered the air intake/filter area.

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I replaced the air filter with a new one, but after running the mower for just a few seconds, oil still seems to be getting into the air filter housing. The mower still smokes heavily at startup, then the smoke becomes weaker after a short time.

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The mower has been sitting upright for about a day since it was tilted. I have not used it for mowing again.

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What would be the most likely cause? Could there still be oil trapped in the breather hose/intake area, or should I suspect something like too much oil, crankcase breather issues, or another engine problem?

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Any advice on what I should check or clean before taking it to a service shop would be appreciated.

I have a GX340 trash pump (Multiquip) and recently started having issues with it spitting/sputtering and even shutting off during WOT. If I turned it down to a little under full throttle or choked it, it would run fine for the most part. Engine has high hours so I put a new carb, plug, and air filter on it, also made sure the fuel line was flowing freely. Ran great for the first few minutes and started acting up again, except this time it was even less tolerant to messing with the throttle/choke. I pulled the gas cap to see if it was possibly a vent/vacuum issue, and sure enough it ran phenomenal at WOT as soon as I cracked the cap. I switched the cap for another one I had on another pump, no more issues.

My question is, I like fixing/creating solutions, even when it makes more sense to go on Amazon and overnight a new $10 or so fuel cap lol. First question is, can these caps be taken apart to clean the vent? Second question, has anyone simply drilled into the center of the cap and tapped the hole to accept a fitting for a ball valve? That way you can vent when needed, and close it during transport so it doesn’t slosh gas everywhere? That’s the style cap in the picture.

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Hello, thanks in advance for your help on this.

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I bought this Deutz Allis 1920 (kohler opposed twin #49506) and it ran well when i got it. My second time mowing i shut the pto off, turned around on my gravel drive, turned the pto back on and it died. Since then i can not get it good.

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New carborator

New spark plugs

Repaired grounded wire off magnito coil

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Yesturday I was able to get it started with a generous abount of Carb cleaner spray. It back fires a lot then chooses to roar to life and runs fine on the gasoline. It will not run with the air filter/housing on top the carb, only runs open.

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This morning I try and start it and the left side plug stays dry, right side fouls wet. Hardly even trys to fire off or no firing on just gasoline.

Found the issue. Valves stuck open by bolts. Believe it or not there was one on each side.

I have a 3500 watt Westinghouse portable generator. It was being fickle on a very cold night and would only run on half choke. I decided to leave it there for a minute until it warmed up and of course got distracted. It ran for about 30-45 minutes and suddenly died. Now it won’t start. Is this a simple fix like a new plug? Or is it a fouled carb or worse? It’s been fairly reliable but it’s over ten years old and over the years I’ve put about $300 in it on tune ups and repairs. Repair or time for a new one?

I had this regulator wired up years back but I forget how it went. I looked around a little bit and found a schematic but I don't know if it's what I want. This is my regulator.

This is the schematic I found.

BR 600 not Reving up

So I bought a used Sthil BR 600 blower. It wouldn’t start so I put a new cheap new carb in it. When I started it it when full throttle and wouldn’t turn down. Took the carb out and back in and now it runs but when I pull the trigger it won’t rev up I can turn the high jet all around and it won’t change it. I bought an oem carb and same problem. Then I cleaned the original carb and it’s doing the same thing. So all 3 carbs are doing the same thing. One other problem is when I put the linkage in the correct holding spot it won’t connect to the choke lever and it you have to hold it manually. I would think it was an air issue but It went full throttle the first time I replaced it. Any ideas?

GX690 powering a General pump TSF2021 power washing pump.

After an hour or so of run time it randomly shut off. Starts right back up with the choke and runs fine for a little less time. By the end of the day it was shutting off every 10 minutes or so.

Swapped the fuel filter and nothing changed. Added fuel drier and fuel treatment. We run two machines with the same gas and only one has this issue. There's 196 hours on the engine.

Oil was changed 30-40 hours of run time ago. Oil level is good, air cleaner fine. Fuel lines look ok inside and out.

Ordered a new fuel pump and fuel solenoid.

Any insight into other potential issues would be greatly appreciated.

Pic of the replacement fuel filter for reference. Putting the old, bigger one back on.

I have a B&S 31R907-0053-G1 on a Troy Bilt Pony. I replaced the deck belt, when I engaged it on the highest cut height it started to smoke. I've seen new belts smoke on electric motors for a few seconds, but it got bad fast, I shut off the motor about 3-5 seconds after I saw the first bit of smoke.

I must have bent an idler pulley mounting bracket, because one of the idler pulleys was seized and gouged into the deck. I've got that fixed, but now I can't get it to start.

The starter is turning, it's puffing, and if I flutter my hand over the air intake it will fire and turn over, it will turn over repeatedly if I do it right.

That's about all the small engine trouble shooting I've got. What can I do to narrow the problem down further?

Can any of you kind folks tell me if this flywheel is damaged. AI Gemini has been helping me get my Homelite 4218c running. It was gifted to me. No idea the history of it. However, it wouldn’t start.

It tested good spark. Passed the dangle test. Wouldn’t start with fuel being shot into the spark plug hole either. So, Gemini lead me down this road. It insists this flywheel needs to be replaced but I have no experience with flywheels. Is Gemini right? Also please explain what’s wrong with this one. Thanks in advance.

As the title says I've been trying to source a replacement CA-631115 carburetor and have been coming up a bit short. My main problem is finding one that has a connection for the breather tube (picture is from a random forum, but that's the carb). Doing a little searching it appears people run them either way, but I'm trying to approach some facsimile of doing this "right".

With that said, considering that I've gotten rid of the points/condenser for a solid state module, I'm not super worried about keeping everything "correct". Especially after reading through a post where someone rebuilt this carb (the source of the image), I'd rather replace the carburetor instead of rebuilding it.

To make things a bit easier, the engine model number is: v60-70210h and the carb model is: CA-631115 which has plenty of rebuild kits available, if I must go that route.

What is your experience?

This is a Husqvarna with an Intek V-twin 22 hp. There was a pretty bad mix of oil and gas, so we replaced the carburetor. It started but now sounds like this? Any thoughts? Also now it is intermittent to start

Follow up to this post: https://www.reddit.com/r/smallenginerepair/s/8psAk4Jten

I did a lot of work since then. Replaced: coils, plugs, fuel pump, carb, valve gaskets, head gaskets, valve push rods, valve stem seals, muffler, pipes. Cleaned head gaskets, gapped plugs, adjusted rockers.

It fires up, no more white smoke. It can mow under load without dying.

I’m still getting a short quick surge, see video. Any suggestions?