August 6, 2020 at 4:58 pm #211020
I’ve checked the spark–thanks to the member who referred me to Harbor freight for the tool to do that–and it seems fine. I filled the tank (it came to me empty) and started it up. It ran pretty well, though not not entirely smoothly, and when it turned it to “Fast” it would shut off. This went on for some until after a while I couldn’t get it started again. What’s my next step?
Here are a couple other questions:
What do I do with the two knobs that control the fuel mixture–lean to rich? I’m not sure how to adjust them.
I’m still not sure the best way to take the flywheel off if I don’t have the special tool for it.
Topics: 48August 6, 2020 at 5:47 pm #211025
A 3-bolt puller is cheap at an auto parts store, and good enough for your little 3hp. It sounds like your coils are probably shot (cracked).
The two knobs are not rocket science. Simply set them where it runs the best at high and idle speed. But it will never run right until you replace those cracked coils (if they are).August 6, 2020 at 6:20 pm #211031
I’m pretty sure your engine has an inspection cover on top of the flywheel…Simply remove the three screws to remove the cover and have a look at the coils without having to pull the flywheel…
You may have an ignition issue causing the engine to crap out at high speed, or you may have a fuel system issue… Just because you are seeing spark on both cylinders while cranking does not mean you aren’t losing spark under load…
Try opening the high speed fuel needle (lower one) 3/8 turn (counterclockwise) to see if the engine will keep running at high speeds…
The initial adjustments for the high speed needle (lower one) is 3/4 turns out from gently seated
Low speed needle (upper one) is initially set at 1.5 turns out from gently seatedAugust 6, 2020 at 7:03 pm #211038
Think of those knobs like a garden hose spigot. “Opening”, means turning the knobs counter clockwise, allowing more fuel into the mix, making it “richer”….
Topics: 48August 6, 2020 at 7:28 pm #211040
Often called a harmonic balancer puller. Some auto parts stores will loan you one. 3 bolts screw into your flywheel to pull it off.
https://www.ebay.com/itm/13pc-Harmonic-Balance-Puller-Shaft-Steering-Wheel-Crank-Crankshaft-Damper-puller/351390362389?hash=item51d07f6b15:g:z8cAAOSwFMdai6ChAugust 17, 2020 at 8:00 pm #211906
The coils seem fine. But I get it running, and it runs for maybe 5 or 10 minutes at medium speeds, slower and faster. Then I throttle it way down and it shuts off, and I can’t get it started again.
Also, there seems to be gas dripping from the carb.
Not sure what to do next. I expected that it would either run or not run, but it seems to do both!
- This reply was modified 1 month, 1 week ago by overland.
US Member - 2 Years
Topics: 125August 17, 2020 at 9:36 pm #211932
A simple thing to check would be fuel flow to the carburetor. Disconnect the hose or fitting at the carburetor and open the fuel valve, Be sure the vent on the tank cap is open as well. You should get a nice steady flow. If not…..maybe the filter inside the tank is partially plugged.
US Member - 1 Year
Topics: 16August 18, 2020 at 4:18 am #211960
Are you running it it will the lower unit submerged in water?
US Member - 2 Years
Topics: 49August 18, 2020 at 6:40 am #211965
gas dripping from the carb to me would indicate bad carb float or needle and seat.August 18, 2020 at 10:52 am #211985
Yes, I’ve got the lower unit submerged when running. Looks like I need to check the fuel flow from the tank, as well as the carburetor
US Member - 1 Year
Topics: 24August 20, 2020 at 5:46 pm #212192
At this point, I’m pretty sure you have both fuel system and ignition issues most likely…Trying to chase all the various symptoms around is frustrating and confusing. You might want to consider giving the ignition and fuel system a complete inspection and servicing…
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