Nikki carbs
- Thread starter CLStout
- Start date
- Joined
- Feb 19, 2020
- Threads
- 79
- Messages
- 10,255
It may have swelled from E10 fuel contact but normally they don't. It will be a tight fit but bowl should slide up into it when it is in the transfer tube.
I don't have any of the 841653 o-rings in inventory to check the sizing on. But I do have the Kawasaki version (which should be the same o-ring) on hand and it is approximately 8.5mm x 14mm x 2.62mm. Note these measurements are thru the plastic bag they are in.
I don't have any of the 841653 o-rings in inventory to check the sizing on. But I do have the Kawasaki version (which should be the same o-ring) on hand and it is approximately 8.5mm x 14mm x 2.62mm. Note these measurements are thru the plastic bag they are in.
Thanks. The O-ring was apparently damaged during factory assembly, but it's not too bad. I just can't figure out why it won't fit up in the emulsion tube. If I put it on the metal tower in the float bowl, it won't allow me to assemble the bowl to the carb body, like it's too tight of a fit for the emulsion tube.
bertsmobile1
Lawn Royalty
- Joined
- Nov 29, 2014
- Threads
- 64
- Messages
- 24,705
They are a very tight fit, I can not assemble them by pressing together with my hands, even with a TINY squirt of silicon spray .
Have bought a replacement tube only to find it was equally hard.
OTOH all that I have done have worked just fine after reassembly
Have bought a replacement tube only to find it was equally hard.
OTOH all that I have done have worked just fine after reassembly
In your experience, was it better to reassemble the carb with the o-ring inside the emulsion tube, or installed on the float bowl?
bertsmobile1
Lawn Royalty
- Joined
- Nov 29, 2014
- Threads
- 64
- Messages
- 24,705
IT made no real difference
I reassemble them upside down so it is O ring inside the emulsion tube and like I said a touch of silicon spray lube .
To me it seems like they are using an O ring that is too hard but I am not privy to all of the design parrameters of the carb, just one of the mugs who has to clean & repair them
I reassemble them upside down so it is O ring inside the emulsion tube and like I said a touch of silicon spray lube .
To me it seems like they are using an O ring that is too hard but I am not privy to all of the design parrameters of the carb, just one of the mugs who has to clean & repair them
Gotcha. I agree, that's a rather stiff rubber o-ring.
I have 2 o-ring kits, one metric and one SAE. I couldn't find a similar o-ring in either kit. I was hoping to find one that wasn't as stiff. Apparently these are made special for the manufacturer.
I have 2 o-ring kits, one metric and one SAE. I couldn't find a similar o-ring in either kit. I was hoping to find one that wasn't as stiff. Apparently these are made special for the manufacturer.
bertsmobile1
Lawn Royalty
- Joined
- Nov 29, 2014
- Threads
- 64
- Messages
- 24,705
Most O ring kits are neoprene rubber which is not suitable for petrol
In reality they are only good for water or for putting under flanged plugs & caps to prevent them from vibrating loose .
And these are the good ones.
Heaven only knows what the kits from China with no indication of what they are made from are actually made of.
I have been guilty of doing the same thing when walking through the supermarket in brain dead mode.
Last time I opened the box the O rings had sweated and were becoming slimey
Eventually I will throw them all out and put the O rings bought from McMaster Carr in there in place of the 2 drawer units they live in now.
I use a lot of them on my vintage motorcycles behind inspection caps & even the rocker caps to stop them falling off while riding so I have got my moneys worth out of them in the cost saving for replacing all of the plugs I used to use but for motor use they are useless & none of the sizes will fit any tap or other water fitting I own .
In reality they are only good for water or for putting under flanged plugs & caps to prevent them from vibrating loose .
And these are the good ones.
Heaven only knows what the kits from China with no indication of what they are made from are actually made of.
I have been guilty of doing the same thing when walking through the supermarket in brain dead mode.
Last time I opened the box the O rings had sweated and were becoming slimey
Eventually I will throw them all out and put the O rings bought from McMaster Carr in there in place of the 2 drawer units they live in now.
I use a lot of them on my vintage motorcycles behind inspection caps & even the rocker caps to stop them falling off while riding so I have got my moneys worth out of them in the cost saving for replacing all of the plugs I used to use but for motor use they are useless & none of the sizes will fit any tap or other water fitting I own .
- Joined
- Feb 19, 2020
- Threads
- 79
- Messages
- 10,255
And yes I use Master's and Grainger too here for the Nitrile and Buna o-rings. But the o-rings kits I brough 20 yrs ago from JC Whitney are still good today though most of the needed sizes are never in those kits. As a shop Just cant see paying what Briggs want for one the above o-rings as according to my recent price file they are wanting $8 for just one o-ring and Bert you know darn well what they cost from McMaster's although we must buy in multiples.