Honda-SOHC

I did think you pulled them out TBH BUT I wasn't about to say grip them with pliers etc as it sounded a little brutal to me and likely to mark the outer part.

Glad to see my memory was right about the air screws, exactly as I remembered them, not bad for 40 odd years ago.

Cheers

Brian

I pulled the ones out of my PD50’s by heating carb body with a hot air gun. Wrapped a pice of rubber tube around the jet and it pulled out pretty easy.

Cheers

Will try that

Thanks'

Brian

Quote from: Oddjob on January 21, 2024, 05:51:18 PM

Identification is spot on. Take the mixture/air screws out and make sure they are intact. IIRC they have a really fine needle on the end of them, if you screwed them in too tight it would shear off in the carb body, there is also a spring a washer and a really small oring fitted on it. Spring on first, washer to stop the spring cutting into the oring, then the oring. You may need to fish it out of the hole.

The slow jet looks to be a push in fit, been many many years since I mucked with a set of those carbs so can’t say for sure how it comes out.

Brilliant! thanks so much.

I discovered that the slow jets are correct size ( 42) . They are push in and apparently designed never to come out! I won't mess with them.
I looked at airscrews , no washer or spring in any of them. Hopefully when i redo carbs the bike will run a lot better. The previous owner seems to made a hash of them. Bike hard to start and can't get over 65 mph......


Brian

I have got my self confused just wondering can you please check the picture and my identification oof carb parts:
1. air mixture screw (1 1/2 turns out)
2. Slow jet/pilot jet ?
3.main jet & emulsion tube

If identifications are correct, how do I remove slow jet, as I want to check sizes. Should be 42.
I checked main jet sizes, one was 98 and the other 3 were 90's. Obviously should all be same size.
Also what position should jet needle be? I am getting conflicting information on the web . Some say the needle can't be adjusted on the PD46C carb and some say they can?

Thanks in advance
Brian

Not really, it was fitted to comply with the US market laws on emissions, mainly for the California market.

Thanks, I assume you have to block up the tube on the airbox that the hose from engine vent fitted on to?

Cheers

Brian

Quote from: Brian Cairns on January 20, 2024, 11:03:26 AM

Quote from: Seabeowner on January 19, 2024, 06:54:22 PM

If this is a USA import then I believed that the 1978s had PD46C like mine has. But maybe they were just using up bits as it was the end of the line. The main throttle spring is mounted round the throttle shaft on the PD46C.
But back to the choke shaft. I  am not going to be much help. But think the C and A both have the double spring arrangement. When I split my carbs a few years ago I remember that getting that spring wound to give the correct force was a a nightmare so take note how much it unwinds when it lets go.

Hi just wondering what float height and needle position do you use on the PD46C carbs...........since I will be taking carbs of bike I am going to check everything out....can't get bike above 70 mph and am convinced its something to do with carbs. Everything on bike is standard.

Cheers

Brian

I have written down 14.5mm for the A and 12.5mm for the C. Strange really as think they are same carbs. So 12.5mm. Only covered about 75miles though as only got it legal late last year.

Yes I read 12.5mm for the C. going to check them tomorrow.
I think the wrong main jet size is wrong in my bike, should be 90 but has 98 installed. I was also told that  the needle height on the C carbs can't be adjusted i.e. only has one notch but again will check that also?

Cheers

Brian

Hi,
I haven't got my bike that long and am giving it the once over.

The air box element ( part no. 17352374003) is missing.
I can't find this part anywhere on-line as it seems to be discontinued with no alternative.
Can anyone advise? can these be homemade etc?
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Cheers

Brian

I’m nearly sure that these have to be separated to replace spring. At least 1&2 separated from 3&4.

Thanks

Brian