20 Most Recent RTO Lawn Boy 6.75hp Mower Questions & Answers

.025" will do

from what I have seen so far the gap is .30 for all manual start 2 cycle and 4 cycle and .35 for electric start

white smoke or grey smoke ?

Sounds like you will need to clean your carburetor.
Sometimes you can get by with priming it a few times, and letting it
run a few times like that and it will flush the gunk out of the jets,
but most of the time you will need to rebuild the carburetor.
If the mower is over a couple years old, then I also recommend that you
buy and install a new carburetor repair kit, because the diaphragm will
get hard and that will cause it to be hard to crank.
When you clean your carburetor and remove the jet screws, count the
number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns
they were in/out.
Please do not forget to rate me, Thanks
Good Luck, I hope this helps

Check oil level, it could be just excess oil. Also check air filter, it may need cleaning/replacing. Depending on how old the nower is, it could be broken rings in the engine, in that case... time for a new mower. hope this helps!

it may have a crack in the fuel line from tank to carb or the plunger may have a hole in it it all works on gravety feed & no air leaks from gaskets & fuel lines hope i helped if not e-mail me & let me know what other problems it has thanks wade

you can go online to toro who owns lawnboy and order the parts and ship them to your house or go to your local Tec dealer with model num and they should be able to help you

Hey Belfest,

I'd check the fuel line or the bowl. I know it's pain to get down in there.

Remove any of the upper engine cowling that will obstruct your view.

Pour just a little fuel in at a time and look for the leak.

Since its been sitting for that long, I'm betting on a rotten fuel line

Best regards,
Mike

you have one of three things going on, either your battery is is low, in which caes you shouls have it tested to ensure there is not a dead cell. or you have a bad ground, remove the starter and clean all mating surfaces with a wire brush then reinstall if this doesnt help ensure that your battery is completly charged then try using a jumper wire from the battery to the starter if the starter does engage at this point then the solenoid is bad and needs to be replaced.

It's eithe your coil ha heat soak and needs replacing or your fuel circuit isn't venting properly and is creating a negative pressure

Make sure your shut off valve is on positon not part way off,check for a screen plugged up in fuel tank or inline fuel filter, check for bad spark plug engine oil top up maybe saftety sensor when oil is low if you remove the fuel line from carb does gas flow straight out no problem?Joe