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21 in poulan power mower will only start with starting ether.? Answered

 1 year old 21 in poulan will only start with starting ether.,once it starts it will continue to run until i shut it down after I finish cutting.  While it is hot it will restart easily, I have replaced the spark plug.problem started this season it was  stored in a heated garage.

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Downunder35m
Downunder35m

4 years ago

When not used for a long time chances are your diaphragm is either gone hard or got a crack.
(Assuming the carby is the standard simple type)
If that is the case you can't prime into the carby.
Quite often it is just goo building up though.
IMHO the best option is to take the carby apart and check it, if in doubt get a gasket kit suitable for it and simply replace all parts included.
On ebay they often go for under 20 bucks and even with rare use the thing should be fine for at least another 2 years.

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rickharris
rickharris

4 years ago

I imagine this mower has a priming bulb to push a small amount of fuel into the carb for starting. This often splits or the pipe to the fuel tank gets blocked or the non return valve on the lower pipe stops working allowing fuel to go back to the tank rather than the carb when it is primed.

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jamest58
jamest58

Answer 4 years ago

The motor runs fine once the motor is running, evidently when i prime it the gas does not go to the carb.???? doesn't appear that there are any leaks ,I guess I'll tear it apart and look for blockages

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rickharris
rickharris

Answer 4 years ago

Try looking on youtube to see if there are any videos of how to dismantle.

My B&S suffered from this, fixed non return valve.