I've got a B&S 28N700 vertical on a riding mower, which sometimes backfires when starting and slowing down. Briggs seemed to have used two different makes of carby:Walbro and Nikki on this engine. Mine is a pump feed Walbro. Both the Nikki and some Walbro's on this engine were also gravity feed.
I've seen a replacement Nikki gravity feed advertised as having an anti-backfire device built in, which makes me think that it was a problem with this Walbro carby generally rather than mine being worn out.
Shouid I:
A) live with the backfiring
B) re-build the existing one with a kit $40
C) Replace the existing with the same again $130
D) Get the Nikki and go gravity feed $130
I've seen a replacement Nikki gravity feed advertised as having an anti-backfire device built in, which makes me think that it was a problem with this Walbro carby generally rather than mine being worn out.
Shouid I:
A) live with the backfiring
B) re-build the existing one with a kit $40
C) Replace the existing with the same again $130
D) Get the Nikki and go gravity feed $130