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49 votes

I hit a pipe with a mower and now it won't turn

This sounds like that impact has bent the crankshaft, which means that the engine will either need replacing or to be rebuilt. You need to decide whether a 2 hour drive to get a quote with the ...
Solar Mike's user avatar
  • 27.8k
27 votes
Accepted

Is running over your extension cable with an electric lawn mower dangerous?

Minimal protection when using a corded electric lawnmower is to power it from a GFCI protected outlet/circuit. If your outdoor outlets do not have GFCI built in, or if you are running your extension ...
CactusCake's user avatar
  • 1,072
23 votes

Is running over your extension cable with an electric lawn mower dangerous?

Yes, but the better question is "how dangerous?", and the answer is "not very". Assuming your outdoor outlets are up to modern code, they're protected by GFCI and will trip even without a high-...
R.. GitHub STOP HELPING ICE's user avatar
22 votes

I hit a pipe with a mower and now it won't turn

Check for a sheared flywheel key. It connects the flywheel to the crank shaft and it's designed to break with less force than it would take to cause permanent damage to the engine. Sometimes they will ...
Troy Turley's user avatar
19 votes

What should I do after topping up the oil in a lawn mower with petrol by mistake

Drain the oil. Refill with new clean oil. Check the manufacturer's documentation for oil change procedure, and type of oil to add. Looks like the drain plug on your mower is just below the oil ...
Tester101's user avatar
  • 132k
19 votes
Accepted

How do lawnmower blade sizes work?

Mower blades are generally sold with the length designation matching the mower deck width. A larger riding mower may have a swathe width of 42", but they'll usually use two or more blades in a side-by-...
Doresoom's user avatar
  • 15.8k
11 votes
Accepted

Repair cracked plastic

Sheet aluminum and pop rivets. Extra points for using old beer cans as the aluminum source, label side out, but flashing is a bit thicker than today's beer cans. Hairy (loaded with fiber ...
Ecnerwal's user avatar
  • 220k
11 votes

I hit a pipe with a mower and now it won't turn

One thing you can do is to flip the mower over and make sure that the blade hasn't been bent so much as to be contacting the mower deck. If it has been bent, you can usually remove it with one bolt ...
Paul Belanger's user avatar
9 votes

Is running over your extension cable with an electric lawn mower dangerous?

Electric with cable, hands down. They are cheaper than battery powered, and all electric mowers will be much quieter than gas powered mowers. The only consideration is if your yard is too large for a ...
tilde's user avatar
  • 230
7 votes

I hit a pipe with a mower and now it won't turn

This exact thing happened to me last year (Husqvarna mower, long grass, hit a pipe, clang, mower stopped, cord stuck) and it was a bent blade. Hammered it back and it was OK, using the mower so far ...
dinorich's user avatar
7 votes

Cordless lawn mower briefly starts then cuts out

I have had 5+ batteries brought to me that show full charge to no charge but do similar or slightly less. In all of them they had been heavily discharged according to the owners. All of them had ...
Ed Beal's user avatar
  • 103k
6 votes

Is pre-mixed ethanol-free fuel better than mixing yourself?

Nothing is guaranteed but I think the odds of you messing up the fuel/oil mixture yourself are greater than getting a bad batch from the factory. So I would say yes, the pre-mixed fuel is a safer bet. ...
Hank's user avatar
  • 14.1k
6 votes

Cordless lawn mower briefly starts then cuts out

I checked the battery and it reports as fully charged and the multimeter says it is at 57.1 volts out of the supposed 58 volts, which seems fine to me Is that the voltage checked right after charging?...
Peter Duniho's user avatar
  • 1,875
6 votes

Cordless lawn mower briefly starts then cuts out

I have the same mower. I solved this exact same problem today. That safety switch (the one you said that you haven't tested yet), THAT'S the culprit. It's a deadman switch, if it loses contact for ...
Jeremy's user avatar
  • 61
6 votes
Accepted

What is connecting the output of a bridge rectifier when an electronic mower is off, for?

Probably electronic braking, to stop the blade faster. Particularly being it's in the deadman switch. Presumably the output of the rectifier is also (more relevant to this use) the input of the motor. ...
Ecnerwal's user avatar
  • 220k
5 votes
Accepted

Why won't my weed whacker keep running?

It doesn't take bad gas or ethanol to crud up tiny carb jets and orifices. Any gas gets old and any gas dries into varnish over time, especially that which has been mixed with two-stroke oil. Proper ...
isherwood's user avatar
  • 141k
5 votes

I put 2-stroke fuel in my 4-stroke mower and now it won't start

Remove the air filter and spray a small blast of starting fluid into the carburetor. It should run for a second or two. If it does then the problem is the gas is most likely old/bad. If it doesn't run ...
Platinum Goose's user avatar
5 votes

Need help tracking down why the tension pulley is red hot after putting on new riding mower belt

It's rotating free because there's no tension on it. It will probably seize up a bit under load. The bearings are probably shot maybe due to the grass fire burning the grease seals. try replacing that ...
JACK's user avatar
  • 82.3k
5 votes

Will a lithium-ion battery powered lawn mower recharge after sitting idle though the winter?

Lithium batteries are not lead-acid. They don't have all those "bad habits" like decaying when left in storage. Tiny palm-sized packs such as for power tools do tend to age like normal ...
Harper - Reinstate Monica's user avatar
5 votes

Yard force self propelled lawnmower won’t start after hitting something hard

There could be more than 1 issue but the most likely is the flywheel to crankshaft key has sheared. This is a square or offset cast piece that sets the timing of the magneto with the needed spark. To ...
Ed Beal's user avatar
  • 103k
5 votes

what type of extention cord do i need for my mower

The first value of the cord types you listed is the conductor size. The second is the number of conductors. You don't necessarily need a /3 cord, which includes the grounding path for safety, as your ...
isherwood's user avatar
  • 141k
5 votes

Assembling a lawn mower for the first time

If the mower is on level ground, then you should see the oil level on the dipstick- or you need to add more oil. Make sure you insert the dipstick fully to get an accurate reading. As far as the ...
Kyle's user avatar
  • 4,843
4 votes
Accepted

13-Amp lawn mower + 10-Amp cord tripping 15-Amp breaker?

Both can be a reason. If you overload an electric motor it will draw more than the rated value causing the breaker to trip. The second reason is excessive length of a small cord can cause a large ...
Ed Beal's user avatar
  • 103k
4 votes
Accepted

Is there a safe, ethical, way to get rid of old gas?

If you do not wish to risk using it, even though it is probably only 6 months old, I would take it to where ever your community recycles hazardous wastes. In my community, the recycle center has the ...
JerryD's user avatar
  • 392
4 votes
Accepted

Mower barely runs and has blue exhaust

Blue smoke means it's burning oil. This could be from you overfilling the crankcase but if it is an older engine it may have been burning a little oil before the oil was added. The key here is, was ...
ArchonOSX's user avatar
  • 20.1k
4 votes

Is running over your extension cable with an electric lawn mower dangerous?

I use an electric mower with a power cable and have three yards that need mowing. I don't have a problem but have become skilled at cable management. Its important to know where your cable is and ...
Stevernator's user avatar
4 votes

Assembling a lawn mower for the first time

Everything you need is in the manual. Gasoline - page 7 - 86 octane or higher, ethanol no more than 10% (E10) Oil - page 3, figure 3 shows the dipstick, which is also the oil filler cap. Instructions ...
manassehkatz-Moving 2 Codidact's user avatar
4 votes
Accepted

Do I need to collect clippings from a hand-push lawn mower?

If you mow frequently (which is a good idea with these, as they bog down on long grass) the clippings will compost in place. There are also grass-catcher add-ons widely available for reel mowers. They ...
Ecnerwal's user avatar
  • 220k
3 votes

Repair cracked plastic

Buy a replacement hood ASAP if you have this thing sitting outside. An old hood will cost you $50. Everything under it will wear/rust much faster with no hood.
DMoore's user avatar
  • 49.2k
3 votes
Accepted

Adding gas/oil mixture into unmixed gas tank?

I think this should be fine. The mixed gas will be diluted almost 10x if you fill the rest of the tank with fresh gas. The mower might be a little smokier than usual but you probably won't even notice....
Hank's user avatar
  • 14.1k

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