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Fuel tank cap vent is plugged.

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Q: Why does primer bulb get sucked inward while running on lawn mower?
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Bolens 4.5 hp 21 rear bag The mower will not stay running unless you keep priming it with the primer bulb?

remove the the bowl on the carb and clean with carb cleaner, be sure to clean the main jet. and the small holes in the bolt that holds the bowl on, if these are plugged the mower will start but not stay running


Why you have to push the button for gas of the lawn mower?

If you are talking about the bulb button it is a primer to get gas to the carburetor if the mower has not run for awhile. Usually not needed to restart a warm mower.


Murray lawn mower will not prime up?

where is the primer on a murray 625 ex series


Where is the carburetor on Toro push mower?

close to primer bulb... has cup shape design


Where is the primer button for a troy built 650 self propelled lawnmower?

The primer button on a Troy Built 650 self-propelled lawn mower is a black round ball. It is located on the right side of the mower just below the black rectangular fuel tank.


How do the carb springs go on a Briggs stratton 3 and a half hp engine with a primer bulb on a push mower?

http://www.lawn-mower-shop.com/carb2.htm http://www.lawn-mower-shop.com/carb2.htm


Where is the choke on a craftsman lawn mower?

depends on the engine Briggs or tech, does it have a primer bulb. but safe bet right next to the carb.


Can jump start your mower with a car?

yes, but do not have the car running.


What do you check first when your mower stops running?

Gas?Spark


Why won't fuel primer work on briggs and stratton lawn mower engine?

Check the gasket between the air filter backing plate and the carburetor. Usually if that is sucking air then the primer won't work. Your best bet would be to just replace the gasket and possibly the primer bulb as well


Erratic running speed Briggs and stratton 4.5hp mower troubleshooting?

4.5 mower will start and run for two seconds


How do you bypass the primer on a lawn mower?

Squirt a very small amount (less than a tea spoon) directly in the carb, then try and start.