Pulled all 4 carbs

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10-21-2016, 10:15 PM
brettw

Pulled all 4 carbs

Bit the bullet and pulled all4 carbs out of my Yamaha F50
They were fouled
Anyone have the tool I need to sync them ?
Thanks

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10-22-2016, 08:06 AM
SeaRay

I have a 10 digit number that works for me. It happens to correspond to my shop mechanic.
10-22-2016, 09:48 AM
MThook

1 Attachment(s)

Brett, I have a tool for syncing automotive carbs it should work
10-22-2016, 11:05 AM
brettw

Quote:

Originally Posted by SeaRay

I have a 10 digit number that works for me. It happens to correspond to my shop mechanic.

And your BANK!!

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10-22-2016, 11:06 AM
brettw

Quote:

Originally Posted by ScooperDude

Brett, I have a tool for syncing automotive carbs it should work

SD
thanks
I ordered on I saw on u tube video
I figured if I'm keeping the F50 I may as well learn to clean it

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10-22-2016, 01:02 PM
BigDawgg

You going to do a video on how to tare down a f50 Yamaha for beginners? My wife says they have apps for that. Right!:biggrin

Good luck!
10-22-2016, 04:50 PM
brettw

Will you add commentary?

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10-22-2016, 07:48 PM
BigDawgg

Yeah! I'll use my Walter Brenner voice. Dab gum it, dun broke another bolt! :biggrin
10-23-2016, 06:38 PM
lawless

Umm isn't there just 2 carbs on a 50hp... at least there is in mine
10-23-2016, 06:39 PM
brettw

4 stroke
4 carbs
4 times the fun

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10-23-2016, 06:41 PM
micorps

Quote:

Originally Posted by lawless

Umm isn't there just 2 carbs on a 50hp... at least there is in mine

was wondering that also
10-24-2016, 05:25 AM
brettw

Wish mine had only 2
2002 F50 4 stroke ?

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10-24-2016, 06:42 AM
MThook

It's the meds he's seeing double
10-24-2016, 07:16 PM
midcarolina

Did you order the sync tool with the metering rods that move up and down or the analog gauge type? or something else? I only ask cause I'm pretty sure your carbs all call for different vacuum from one another, and not like most where you balance to even...
10-25-2016, 09:16 PM
brettw

Rods move up and down
Saw a mechanic using it on u tube
Carbtune pro 4 column

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10-25-2016, 09:23 PM
brettw

https://m.youtube.com/watch?v=KV5PKfdzKNE

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10-25-2016, 09:27 PM
brettw

Quote:

Originally Posted by midcarolina

Did you order the sync tool with the metering rods that move up and down or the analog gauge type? or something else? I only ask cause I'm pretty sure your carbs all call for different vacuum from one another, and not like most where you balance to even...

Thanks
Tell me what you are taking about,
Thought all carbs were to be balanced to each other

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10-25-2016, 10:31 PM
midcarolina

Thats a really good one... I read somewhere that the manual calls for x vacuum on bottom carb then a different amount on others...I dont recall the numbers and it may not be that much difference, it's tough to get em dead nuts any way, if I can find the info again i'll post it, It stuck with me cause I was surprised, i've always balanced the carbs on bikes or boats......
10-25-2016, 11:08 PM
gcromer

I've been off line and could have let you use mine, it's somewhere here. Isn't that F50 a 3 cly, I though the F50 and F40 were both 3 cly. and I think that my shop manual said to match threm. I think that I may have the OEM manual on a F50 also.

Found my F40 book. Measure the #3. Adjust the throttle valve adjusting screws part #5 on both #1 & #2 carbs until they are within the specified variations. example, if #3 is 300 mm Hg then #2 should be 300-5 = 295 and #1 would be 300 -10 =290 mm Hg Hope this helps. If I find my F50 manual, I'll see if it says the same thing..
10-26-2016, 02:25 AM
brettw

Thanks
I think you leave the bottom carb alone and adjust to it since it is linked to all and controls all
2002 F50 has 4 carbs
F40 has 3

Thanks again

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10-26-2016, 02:26 AM
brettw

Quote:

Originally Posted by gcromer

I've been off line and could have let you use mine, it's somewhere here. Isn't that F50 a 3 cly, I though the F50 and F40 were both 3 cly. and I think that my shop manual said to match threm. I think that I may have the OEM manual on a F50 also.

Found my F40 book. Measure the #3. Adjust the throttle valve adjusting screws part #5 on both #1 & #2 carbs until they are within the specified variations. example, if #3 is 300 mm Hg then #2 should be 300-5 = 295 and #1 would be 300 -10 =290 mm Hg Hope this helps. If I find my F50 manual, I'll see if it says the same thing..

Thanks
I think you leave the bottom carb alone and adjust to it since it is linked to all and controls all
2002 F50 has 4 carbs
F40 has 3

Thanks again

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