Replacement Acorn Nut for USA

[Peter]

Hi

While reassembling the carbs on the girlfriend’s GV250 I managed to snap the a corn nut threads. The replacement part number is 13329HG5100. It’s the hex cap for the sliding needle in the carb bowl.

Has anyone an idea please how do get a replacement in the US? Isn’t there a way to get replacement parts from Mikuni by identifying which carb we use?

Any input is appreciated.

[♠️ M77]

Send us an email as we have loads of them on this site’s shop pages.

Mikuni doesn’t make them anymore but we managed to get a lot of old stock, i would say that brass nut and the “mixture screws” are like the most delicated parts of carb!

If urgency is a thing,  contact  SunCoastCycleSports in US , as we do buy their stock every now and them for the bikes we fix on our UK soil.  They may have an old carb laying around or a salvage bike to strip parts from.

[Peter]

Hi Marcel

Thank you for your input. I reached out to Suncoast cycle sports but they didn’t have this part.

Due to time constraints I ended up fabricating something myself instead of ordering from the shop but thanks for the reference there too.

I used a stainless M5x0.8 bolt with hex head, cut the thread length to ~5mm length and drilled a 3mm deep 2.5mm hole. I had to add an additional washer to ensure the jet needle didn’t bottom out against the bolt blind hole.

I would have used a hollow stainless M5 bolt and just spot welded the hex bolt shut if the delivery would have been faster.

The motorcycle seems to be running fine but a longer ride will confirm.

Thanks again for the help.

[♠️ M77]

Not a problem. Glad you sorted it. I gotta say i respect your creativeness!

[Author]

Posts

[Peter]

Hi

While reassembling the carbs on the girlfriend’s GV250 I managed to snap the a corn nut threads. The replacement part number is 13329HG5100. It’s the hex cap for the sliding needle in the carb bowl.

Has anyone an idea please how do get a replacement in the US? Isn’t there a way to get replacement parts from Mikuni by identifying which carb we use?

Any input is appreciated.

[♠️ M77]

Send us an email as we have loads of them on this site’s shop pages.

Mikuni doesn’t make them anymore but we managed to get a lot of old stock, i would say that brass nut and the “mixture screws” are like the most delicated parts of carb!

If urgency is a thing,  contact  SunCoastCycleSports in US , as we do buy their stock every now and them for the bikes we fix on our UK soil.  They may have an old carb laying around or a salvage bike to strip parts from.

[Peter]

Hi Marcel

Thank you for your input. I reached out to Suncoast cycle sports but they didn’t have this part.

Due to time constraints I ended up fabricating something myself instead of ordering from the shop but thanks for the reference there too.

I used a stainless M5x0.8 bolt with hex head, cut the thread length to ~5mm length and drilled a 3mm deep 2.5mm hole. I had to add an additional washer to ensure the jet needle didn’t bottom out against the bolt blind hole.

I would have used a hollow stainless M5 bolt and just spot welded the hex bolt shut if the delivery would have been faster.

The motorcycle seems to be running fine but a longer ride will confirm.

Thanks again for the help.

[♠️ M77]

Not a problem. Glad you sorted it. I gotta say i respect your creativeness!

[Author]

Posts