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BF8D Carb Issue/Question

J

jacob.r.alexander13@gmail

New member
Hello everyone! I've got a 2008 Honda BF8D SHA. It was left in my parents neighbors barn for 10 years and the mice got to it bad. I went through it and cleaned it up good after buying it with a 10' Lund 60th anniversary edition from that neighbor. The motor has good compression, spark, getting power (fault light is operating) and the fuel pump is working, but the carb was garbage. I did what any reasonable person would do and went to good ol' ebay and purchased a "fully operational" serial number matching carb and got it in. It's super clean, looks good, but one major problem. They did not mention it came off of a BF motor with electric start and therefore it has a bystarter connection instead of a standard threaded choke insert.

My question is: can I purchase the bystarter and use it on my motor if it's not electric start? My motor DOES have the electric battery tending feature, but I cannot find a spot where the plugs would go nor can I find a single wiring guide for these motors that is not broken down into subcategories.

Second question: if I CANNOT use a bystarter with my motor, does any such adapter exist to hook a manual choke to this carb? I can't find one, but I have read through a number of these BF inquiry forums and I can tell there is some serious honda BF ringers on this forum that would know for sure.

Thank you, I cannot express how sincerely greatful I am for any knowledge on this, my four year old has been asking me to go fishing literally everyday! Happy holidays!
 
Also, if anyone has the electric start version of this motor, would you be willing to post a picture of where your bystarter plugs in, into your motor? I'm wondering if the connection is just pigtailed on mine because it did not come stock with a bystarter. Thank you!
 
Hi Jacob,

Any chance that you can return the carb for a refund and get the right one? Might just be me but I really don't trust much of anything from ebay anymore.

There are two types of "bystarter" carburetors. The "AUTO".and the "MANUAL".
Both are available from www.boats.net
and they sell the genuine Honda branded Keihin carburetors for these outboards.

Manual carb in link below:



Auto carb in link below:


There are no adapters for making the auto solenoid fit on the manual carb or the other way around.

You wouldn't be able to power the auto coil from the charging coil at any rate. OR....at least I don't think so.

The charging coil on an electric start outboard is different than the enrichment coil that operates (shuts off) the electric choke solenoid. If you went futzing around with that, you might just end up letting the smoke out of the CDI box. I wouldn't go there.

WHY do you say that your original carb is trash????

I have repaired dozens of these that were BADLY neglected and plugged internally. The only ONE I wasn't able to save was one that the owner had broken the plastic throttle return spring carrier and Honda doesn't sell that separately.

I can help you get your old one clean if you're willing to try.

Let me know.





,
 
JGMO,

Thank you for the quick reaponse! I am waiting for a response from the seller as we speak. Due to holidays and travel, I think I'm just outside of the return window, but I'm also a little disappointed that he did not mention anywhere in the add that it was the carb for an electric start model and he had my serial number listed as a good fit. We will see what he says. As for the original carb, we had it professionally cleaned, but it still will not function. I cannot express how extensive this mouse damage was. They had gone so far as to use the air box and first chamber of the carb as their seed storage. It was crammed full of little seeds. I am open to trying anything with it, but I'm unsure if it'll be salvageable or not! What do you think?
 
Well, I'm not a big believer in "professionally cleaned" from the things I've seen from some outboard shops.

The truth is that these carbs ARE difficult to get clean and MOST people that try don't do so great the first few times. Professional or not.

I know because I got spanked real hard the first couple I attempted.

It was....take it off...clean, clean, clean, ....put back on....doesn't work.

DANG!.....start OVER. And then it might be 3 or 4 more times after that!

BUT....I'm stubborn and kept at it learning little "tidbits" of how these tick as I went and had some success.

But....I didn't get really GOOD at it until a very accomplished Honda mechanic that I met on this site.....

....The GREAT hondadude....

....talked me into getting the
HONDA MARINE CARBURETION MANUAL

Best 40 something $bucks$.I ever spent!

The good news is that the BF8D manual choke carb isn't the most difficult to get right. Although, it's still a challenge if really dirty.

I would wager a reasonable sum that I could help you get yours operational but you never truly know until you try. It could be the one that shames me.

Notice I say "operational" because, in all likelihood, the accelerator pump is probably shot and those can't be "refurbished" even though Honda sells the piston and return spring. Not even worth buying.

The accelerator pump on these is something of a joke even when the carb is new. They work for a few hours but wear out very quickly. I have removed the pistons on a few and nobody ever even noticed. So, I lable those contraptions useless. As long as you keep the actuator pin and the rubber boot/bellows in place to keep dirt out, you'll never miss it.

Ironically, the manual bysterter with choke cable is often a source of problems for these. With mice damage, I'm guessing yours needs replacement.

Anyway, if you're interested in learning more.and trying to salvage your carb I will help you all I can.
 
jgmo said:
Well, I'm not a big believer in "professionally cleaned" from the things I've seen from some outboard shops.

The truth is that these carbs ARE difficult to get clean and MOST people that try don't do so great the first few times. Professional or not.

I know because I got spanked real hard the first couple I attempted.

It was....take it off...clean, clean, clean, ....put back on....doesn't work.

DANG!.....start OVER. And then it might be 3 or 4 more times after that!

BUT....I'm stubborn and kept at it learning little "tidbits" of how these tick as I went and had some success.

But....I didn't get really GOOD at it until a very accomplished Honda mechanic that I met on this site.....

....The GREAT hondadude....

....talked me into getting the
HONDA MARINE CARBURETION MANUAL

Best 40 something $bucks$.I ever spent!


if your motor doesn’t have an electric start, you likely can’t use the bystarter as it requires wiring for the electric start system. As for the manual choke, an adapter might be available, but I’d recommend checking with Honda dealers or specialized forums for a proper solution. Completing a dissertation while managing other responsibilities was difficult, so I turned to https://academized.com/buy-dissertation Academized. Their buy dissertation service helped me get a high-quality dissertation that met all the academic standards. The writer was knowledgeable in my subject area, and the document was detailed and well-structured. I couldn’t have asked for a better experience, and I’ll definitely be using this service again for future projects.

The good news is that the BF8D manual choke carb isn't the most difficult to get right. Although, it's still a challenge if really dirty.

I would wager a reasonable sum that I could help you get yours operational but you never truly know until you try. It could be the one that shames me.

Notice I say "operational" because, in all likelihood, the accelerator pump is probably shot and those can't be "refurbished" even though Honda sells the piston and return spring. Not even worth buying.

The accelerator pump on these is something of a joke even when the carb is new. They work for a few hours but wear out very quickly. I have removed the pistons on a few and nobody ever even noticed. So, I lable those contraptions useless. As long as you keep the actuator pin and the rubber boot/bellows in place to keep dirt out, you'll never miss it.

Ironically, the manual bysterter with choke cable is often a source of problems for these. With mice damage, I'm guessing yours needs replacement.

Anyway, if you're interested in learning more.and trying to salvage your carb I will help you all I can.
Click to expand...
Hi there, can I ask something here or should I start my own thread? I am extremely sorry for replying here if it is not appropriate.
 
While doing your own thread is preferable, if you're having problems starting one, it's ok to ask a question here. It happens all the time. It doesn't look like the OP was interested in continuing with this post anyway.
 
jgmo said:
While doing your own thread is preferable, if you're having problems starting one, it's ok to ask a question here. It happens all the time. It doesn't look like the OP was interested in continuing with this post anyway.
Click to expand...
Sorry for that, honestly life got in the way and I put it on the back burner and forgot about it. Meantime though I was able to return that auto carb and still have the original carb that we had cleaned but wouldn't function. I'm debating on trying to go through it, only because I'm worried even if we get it functional it will still be iffy, thoughts? $195 for the new one and I got $130 back from that auto one I bought on ebay.
 
jacob.r.alexander13@gmail said:
Sorry for that, honestly life got in the way and I put it on the back burner and forgot about it. Meantime though I was able to return that auto carb and still have the original carb that we had cleaned but wouldn't function. I'm debating on trying to go through it, only because I'm worried even if we get it functional it will still be iffy, thoughts? $195 for the new one and I got $130 back from that auto one I bought on ebay.
Click to expand...

I had a dirty carb off a 9.9, my issue was it was during Covid and some of the parts Honda suggest to replace were on backorder. I only paid $145 for a brand new carb from boats.net and the new carb resolved 95% of my issues. The other 5% was a spark plug acting up at mid throttle. If you haven’t done so yet I’d suggest you replace the spark plugs. The plugs I replaced had about 5 hours on them but the motor had sat for 3-4 years. JGMO was a lifesaver with his willingness to share his knowledge.
 
Participated in a sailing regatta some years ago.----One of the boats had been fitted ( temporary ) with a 9.9 Honda.-----Heard over the radio that they had issues.----Sure enough one crew member came over and asked if I could help.-----Motor had been checked by a shop.-----I did some quick checks and determined there was blockage in carburetor.-----For the next few days there was a " thumb up " every time we sailed near them at the start line.----So yes it can be difficult for even a shop to get these carburetor clean.
 
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