Honda 2.3hp - fuel issue

My guess. There was the usual beginning of season fuel blockage. You have stripped it down which will almost certainly have cleared it. But made some sort of error reassembling it.

A mechanic might show you the problem. These Honda engines are taking over the world so you could try a local garden machinery workshop.

There are some carb check sheets here:

http://www.honda-engines-eu.com/web/eec-public-site/carburettor-check-sheets

Not sure which is for the BF2?!
 
I had the exact same symptoms . With our Honda lawn mower last week. and Our Ob the week before.. Both after a winter of neglect but dry carb!

Found engine would run on the choke but eventually even this was not enough .

When it would not start I put a petrol cap full of fuel down the spark plug hole replaced plug and off it went for about 10 seconds.

Took the drain plug out of bowl plenty of petrol flow.

Took the carb apart and found the main jet was difficult to see through when held up to the sky.

Poked it through with a half a dozen strands of copper wire from 0.5mm tri-rated and could see a nice clean jet combined with carb cleaner . Also the used a single strand to polish out the little side holes in the jet...

Started first pull and and did not need any choke to keep it running any longer!

Sorry if you tried this..... I thought initially the jet looked clear it was only after polishing and cleaning that I could definitely see a nice clear hole when held up to bright light.

At the bottom of the carb there was a dusty grey sort of residue that I think was slightly blocking the main jet.

You must also make sure you re-assemble the carb gaskets and spacers correctly....

My experience of Honda GX engines on go karts was it was always the same jet that gave those symptoms.

View attachment 42308

Check item 11 and 24 are spotless and rodded through with soft copper strands.....
 
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TSB240 said:
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Check item 11 and 24 are spotless and rodded through with soft copper strands.....
Click to expand...

Also, check the bowl is on the right way round. Otherwise it stops the float moving. Or the pivot pin falls out. Been there etc...

Very useful diagram. Is there a parts list to go with it?

BTW I've only ever taken the top and bottom off mine. Shouldn't need to dismantle much else.
 
If the drain plug won't come out (It's a brass screw in mild steel!), drill and tap, replace with a S/S screw. then you can unscrew it in situ and prove there is a fuel supply controlled by the float & needle.

also:
generally when replacing the bowl.. as said be careful about alignment, as it might stop the float from dropping to allow the fuel in,
be sure to check its seated properly into the rim recess, or tightening it will dimple the base and compromise the seal at the rim. If that happends fuel p...ses ot all over the place, and you have to carefully dimple it back.
 
Ruffles said:
My guess. There was the usual beginning of season fuel blockage. You have stripped it down which will almost certainly have cleared it. But made some sort of error reassembling it.

A mechanic might show you the problem. These Honda engines are taking over the world so you could try a local garden machinery workshop.

There are some carb check sheets here:

http://www.honda-engines-eu.com/web/eec-public-site/carburettor-check-sheets

Not sure which is for the BF2?!
Click to expand...


It did RAFYC to our pile mooring by Mercury marina and back (about 10 mins each way on Easter Saturday)
Yes ... thats on my mind too (fixed the original problem and introduced a new one!)

Thanks for the new ideas. I'm out of time this week. I'll have a go next week and report back
 
I had exactly the same problem with the same engine at the start of last season. I cleaned the bowl and the main jet three times before it finally decided it was going to work after all. No dirt that I could see after the first attempt but there must have been something lurking in there. Try, yet again, taking it apart and cleaning the bowl and the main jet. Whilst you are at it I would change the plug too 'just in case'.
 
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