[SOLVED] Simplicity 16 HP B&S Vanguard needs full choke

z-tec · 06-02-2009, 09:59 AM

I was mowing this weekend and all of a sudden my mower began to spit and sputter. I put the choke on full and it ran normal with full throttle. I don't need the choke when it's idling speed or a lil over half on the throttle, but soon as I go for the full throttle it will spit and start to die out. I took out spark plugs and one was black, I replaced both and still the same problem. I'm somewhat new to small engine repairs. It has a hard time even with full choke and full throttle engaging the PTO. Wondering if anyone knows why this happens? So far I think i'm gonna need new air filter, fuel filter and clean the carb but interested in seeing where I should start. Thanks.

pat mcgroin · 06-03-2009, 10:07 AM

That is a very good first step.
The fuel filter and clean the carb was my first thought.
It sounds like you have picked up some dirt somewhere.
Be sure to rinse the tank while going through this to get rid of any sediment.
Im not sure if your setup has a float or a diaphram but would guess its a float.
When cleaning the carb. be very careful not to bang the float and alter its setting.
You will need to remove it but be gentle and you will do fine.

z-tec · 06-03-2009, 02:15 PM

Thanks for the tip!!

06-02-2009, 09:59 AM	#1 (permalink)
z-tec Registered User Join Date: Apr 2009 Posts: 44 OS: WinXP Pro	[SOLVED] Simplicity 16 HP B&S Vanguard needs full choke I was mowing this weekend and all of a sudden my mower began to spit and sputter. I put the choke on full and it ran normal with full throttle. I don't need the choke when it's idling speed or a lil over half on the throttle, but soon as I go for the full throttle it will spit and start to die out. I took out spark plugs and one was black, I replaced both and still the same problem. I'm somewhat new to small engine repairs. It has a hard time even with full choke and full throttle engaging the PTO. Wondering if anyone knows why this happens? So far I think i'm gonna need new air filter, fuel filter and clean the carb but interested in seeing where I should start. Thanks. Last edited by z-tec; 06-02-2009 at 10:02 AM.

06-03-2009, 10:07 AM	#2 (permalink)
pat mcgroin Registered User Join Date: May 2009 Location: Toledo Oh. Posts: 495 OS: XP Professional SP2 Vista Ultimate SP2	Re: Simplicity 16 HP B&S Vanguard needs full choke That is a very good first step. The fuel filter and clean the carb was my first thought. It sounds like you have picked up some dirt somewhere. Be sure to rinse the tank while going through this to get rid of any sediment. Im not sure if your setup has a float or a diaphram but would guess its a float. When cleaning the carb. be very careful not to bang the float and alter its setting. You will need to remove it but be gentle and you will do fine.

06-03-2009, 02:15 PM	#3 (permalink)
z-tec Registered User Join Date: Apr 2009 Posts: 44 OS: WinXP Pro	Re: Simplicity 16 HP B&S Vanguard needs full choke Thanks for the tip!!