Tips for servicing a Honda BF2D outboard

MagicalArmchair

MagicalArmchair

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After being stored under my workbench in the garage, liberally covered in dust from myriad winter projects, and having been turned upside down at least once, the time has come to resurrect my Honda BF2D and give it a service.

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When we used it last time, the engine would not idle at all, so I suppose a clean out of the carburettor jets is required?

I have never serviced the outboard before, nor any other for that matter. I have the manual from Honda (http://cdn.powerequipment.honda.com/marine/pdf/manuals/31ZW6605.pdf) that covers changing the oil etc, however not the carb!

Has anyone written up servicing these or have any tips for getting them to run sweetly?
 
You're certainly very busy Mark. :)

I would remove the spark plug and check there is no oil in the cylinder. Whilst you're at it, a new plug is a good idea if it's not been changed recently.

The idling problem will, as you say, almost certainly be dirt in the carb. These small OBs usually have very simple carbs to remove, take apart and clean out but don't adjust anything until you've tried it out once cleaned. You can buy carb cleaner but I usually use white spirit or acetone.

If it hasn't got an inline fuel filter you can buy very small ones for a couple of quid on eBay - around 50mm total overall length - so probably a good investment to fit whilst you've got the carb off as the fuel pipes are then easily accessed.

Richard
 
MagicalArmchair said:
Something like this re filters? http://www.ebay.co.uk/itm/10-x-Univ...Filter-Auto-Petrol-6mm-8mm-Pipe-/301699914450
Click to expand...

Those are the ones I first bought for my Suzuki 2.5 but I found it difficult to fit them in the space under the cover and orient them so they didn't end up with an air pocket. I then bought these smaller size ones http://www.ebay.co.uk/itm/5-x-Small...932479?hash=item20f9be017f:g:yu0AAOSw34FVIlVw which are a bit harder to find but very easy to fit and get the air out.

Richard
 
Try a search of Honda carb. cleaning. I seem to remember seeingadescription on the forum of how to get to the carb. And clean it. Air for the small jet IIRC?
 
MagicalArmchair said:
After being stored under my workbench in the garage, liberally covered in dust from myriad winter projects, and having been turned upside down at least once, the time has come to resurrect my Honda BF2D and give it a service.



When we used it last time, the engine would not idle at all, so I suppose a clean out of the carburettor jets is required?

I have never serviced the outboard before, nor any other for that matter. I have the manual from Honda that covers changing the oil etc, however not the carb!

Has anyone written up servicing these or have any tips for getting them to run sweetly?
Click to expand...

You might find the Service Manual useful. It seems to cover most things including carb cleaning. http://boatinfo.no/lib/honda/manuals/bf2dws.html#/0
 
steve66 said:
They have online filters built in. The problem is not dirt but fuel residue
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Do you happen to know how fine the filter is?

Honda refer to two devices on my generator as a filters (and occasionally "strainers") but I believe that is misleading. I would refer to both of these devices (one below the filler cap and one in the outlet pipe from the tank) as strainers rather than filters. They are basically fine nylon mesh. I intend to put a proper inline filter in the genny when I get time but as it's not as "mission critical" as the OB it's a lot further down the list. :(

Richard
 
steve66 said:
It's online in the fuel pipe. Pull the fuel pipe off where it meets the tank and you will see it
Click to expand...

I haven't got a Honda OB so that's going to be tricky. :) However, if it's in the fuel pipe I doubt whether it will be very fine as a fine filter with such a tiny surface area would be too prone too clogging. It's probably at the "strainer" end of the scale rather than the "filter" end like my Honda generator. There's certainly nothing to lose by having a proper fine filter but it's up to Mark obviously.

Richard
 
Exactly Richard , it's up to the OP. but after rebuilding and servicing the thick end of 700 Honda 2 and 2.3hp outboards,I have never found one yet that is in need of an additional filter. Unless the online filter is damaged or removed the only thing you should find inside of the carb bowl is either fuel residue or rust from the bowl
 
Thanks all, cracking advice, and lots of great information. A lot of the fuel lines are quite hard and brittle, I wonder if air is getting in somewhere.

Humm, not sure this is going to work as a test bed - too little water? Recipe for disaster? Its the biggest bin I could fine without resorting to emptying all the rubbish out of the council bin!

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Where on earth do you buy spares too? The gasket for instance that Steve66 (thanks for sharing your experience) suggested?
 
MagicalArmchair said:
Thanks all, cracking advice, and lots of great information. A lot of the fuel lines are quite hard and brittle, I wonder if air is getting in somewhere.

Humm, not sure this is going to work as a test bed - too little water? Recipe for disaster? Its the biggest bin I could fine without resorting to emptying all the rubbish out of the council bin!

sxOkX3zl.jpg


QvzXdsPl.jpg


Where on earth do you buy spares too? The gasket for instance that Steve66 (thanks for sharing your experience) suggested?
Click to expand...

Your test bin is fine. Your fuel lines are also fine. If still not sorted I rebuild carbs with new float bowl jets and gaskets for £35 Inc postage.
Steve
 
Oh really?? Ha! Okay, thanks for reassurance - all rather another voyage of discovery.

I'll get to work stripping down the carb. If I have any trouble Steve, I'll PM you and pop it in the post to you to let the experts loose on it. :)
 
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