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Walbro WYL-series Carbs: Are Different Models Compatible?

#1

Two-Stroke

Two-Stroke

I have a Makita hedge trimmer (model EH760). I'm pretty sure I need to replace the carb. I've rebuilt it and installed new fuel lines and a fuel filter. I've also eliminated ignition problems.

On the body of the Walbro carb is stamped just "WYL" but that's a series of carbs, not just one model. I'm not sure which model I have but I did look up the Makita part number for the carb (5256008000). Doing some Googling led me to believe that 5256008000 is probably either a Wyl-41 or s Wyl-41-1.

I think the rebuild kits are the same for all WYL-series carbs (but I'm not sure about that.) Also, from the photos, I can't tell one WYL-series carb from another. :confused2:

Are all of the WYL-series carbs interchangeable? They look like all of them could bolt on but maybe the main jet would be different or something like that.

Does anybody know for sure what model (WYL-???) I should order?


#2

BlazNT

BlazNT

The pictures of the carbs I have found are so generic there is no way to tell. A lot of the time the differences in carbs are just how the cables attach to them. At that price $139.00 I would not chance a purchase to see if it will work. So now you get to decide whether to clean or replace the carb.


#3

I

ILENGINE

The exact model number of the carb is etched or stamped into the body of the carb. Normally Walbro puts is in one of the corners of the main body.


#4

primerbulb120

primerbulb120

If you want a new carb, don't get a Walbro! The price is ridiculous and the carb is not even adjustable.

I would recommend one of the following two carbs. They are both slightly larger than your current carb because they are fully adjustable:

This one is $12, ships from China, and should fit your machine without any modifications. ebay.com/itm/Carburetor-For-Walbro-Ryobi-Shindaiwa-Troy-Bilt-MTD-Gas-String-Trimmer-Carb-/311500385978?var=&hash=item4886deaeba:m:mJ8WGA8XIfLoAjwdL87R94A

This one is basically the same thing as the first one, but it's $17 and ships from the USA. ebay.com/itm/Carburetor-Carb-For-Troy-Bilt-753-04745-MTD-753-1225-Ryobi-650R-825R-875R-890R-/222039738582?var=&hash=item33b29988d6:m:m23sFjepi_vVZALfyUVn4Kg

Compare your carb to the pictures before you buy one of these. Before you buy it you will have to select which part number/model number it replaces. Just select one of the Walbro part numbers, it doesn't matter which one. If it looks like it will fit, it will. When you get the new one put on, you will have to adjust it with the mixture screws (located on the side and top of the carb.) If you have any questions, I'd be happy to help. :smile:


#5

Two-Stroke

Two-Stroke

ILENGINE said:
The exact model number of the carb is etched or stamped into the body of the carb. Normally Walbro puts is in one of the corners of the main body.
Click to expand...

I would expect a complete model number but I've looked all over this one -- all I could find is "WYL".

Thanks for the response.


#6

Two-Stroke

Two-Stroke

primerbulb120 said:
If you want a new carb, don't get a Walbro! The price is ridiculous and the carb is not even adjustable.

I would recommend one of the following two carbs. They are both slightly larger than your current carb because they are fully adjustable:

This one is $12, ships from China, and should fit your machine without any modifications. ebay.com/itm/Carburetor-For-Walbro-Ryobi-Shindaiwa-Troy-Bilt-MTD-Gas-String-Trimmer-Carb-/311500385978?var=&hash=item4886deaeba:m:mJ8WGA8XIfLoAjwdL87R94A

This one is basically the same thing as the first one, but it's $17 and ships from the USA. ebay.com/itm/Carburetor-Carb-For-Troy-Bilt-753-04745-MTD-753-1225-Ryobi-650R-825R-875R-890R-/222039738582?var=&hash=item33b29988d6:m:m23sFjepi_vVZALfyUVn4Kg

Compare your carb to the pictures before you buy one of these. Before you buy it you will have to select which part number/model number it replaces. Just select one of the Walbro part numbers, it doesn't matter which one. If it looks like it will fit, it will. When you get the new one put on, you will have to adjust it with the mixture screws (located on the side and top of the carb.) If you have any questions, I'd be happy to help. :smile:
Click to expand...

I'm going to give that a try -- the one shipping from the states.

If I can't figure out how to adjust it (hopefully it comes with directions), I may ask for your help. :cool:

Thank you much.


#7

primerbulb120

primerbulb120

Two-Stroke said:
I'm going to give that a try -- the one shipping from the states.

If I can't figure out how to adjust it (hopefully it comes with directions), I may ask for your help. :cool:

Thank you much.
Click to expand...

It does not come with directions. You just install it and try to start the hedge trimmer. It should start and run okay without any adjustment, if it needs adjustment I will do my best to help you adjust it. I'm not really sure how to adjust it myself, the adjustment screws are not labeled and I don't know what they are supposed to control. They do make a difference though. :laughing:


#8

Two-Stroke

Two-Stroke

primerbulb120 said:
It does not come with directions. You just install it and try to start the hedge trimmer. It should start and run okay without any adjustment, if it needs adjustment I will do my best to help you adjust it. I'm not really sure how to adjust it myself, the adjustment screws are not labeled and I don't know what they are supposed to control. They do make a difference though. :laughing:
Click to expand...

If there are two adjustment screws then one is probably high-speed (usually marked with a tiny "H") and the other is low-speed. At least that's the way it normally is.

I guess I can find out via trial and error. :thumbsup:

Thanks again for the help.


#9

primerbulb120

primerbulb120

Two-Stroke said:
If there are two adjustment screws then one is probably high-speed (usually marked with a tiny "H") and the other is low-speed. At least that's the way it normally is.

I guess I can find out via trial and error. :thumbsup:

Thanks again for the help.
Click to expand...

I don't think either one will be marked on this carb. One of them is on the side of the carb and the other is down in the center of the throttle valve (accessed from the top of the carb.)


#10

Two-Stroke

Two-Stroke

I haven't received the carb for the Makita EH760 yet but I should have it in a couple of days.

However, since I have had a similar issue with a string trimmer (Troy Bilt TB90BC, Walbro 1587 WT827A), I searched eBay for a carb for it, ordered one, and installed it. I'm very happy with the result... it's starts and runs like new. :cool: That trimmer had been a low priority since I have two other working trimmers but I'm glad to have it back in the fleet.


#11

primerbulb120

primerbulb120

Two-Stroke said:
I haven't received the carb for the Makita EH760 yet but I should have it in a couple of days.

However, since I have had a similar issue with a string trimmer (Troy Bilt TB90BC, Walbro 1587 WT827A), I searched eBay for a carb for it, ordered one, and installed it. I'm very happy with the result... it's starts and runs like new. :cool: That trimmer had been a low priority since I have two other working trimmers but I'm glad to have it back in the fleet.
Click to expand...

If you ever want to tune it, there are two mixture screws on top of the carb. The one closest to the air filter is the high speed screw, the one closest to the engine is the idle speed screw. You will need this tool to adjust them:

ebay.com/itm/Pac-Man-Carburetor-Adjustment-Service-Tool-For-Ryobi-Homelite-Craftsman-Poulan-/281862780594?hash=item41a054b6b2:g:mPIAAOSwbdpWT9ca

The screws are actually the "single D" type, but I've found that the screwdriver for the "pac man" type can adjust them with no problem. Plus you can also adjust "pac man" carburetors if you ever have any. :smile:


#12

Two-Stroke

Two-Stroke

I didn't know you could buy those special adjustment tools on eBay. Thanks, that's good to know.


#13

primerbulb120

primerbulb120

Two-Stroke said:
I didn't know you could buy those special adjustment tools on eBay. Thanks, that's good to know.
Click to expand...

Just put in "carb tool" in the search box and you will come up with all the different kinds of carb screwdrivers. I'm used to buying parts on eBay, so when I needed a carb tool eBay seemed like the natural place to go. :smile:


#14

B

bertsmobile1

primerbulb120 said:
Just put in "carb tool" in the search box and you will come up with all the different kinds of carb screwdrivers. I'm used to buying parts on eBay, so when I needed a carb tool eBay seemed like the natural place to go. :smile:
Click to expand...

None of the current tools are available to any other than an authorised dealer and have to be ordered through the OEM suppliers.
EPA strikes again.
I generally cut the guards off nd then put a slot in the end of the screws.

As for the original question any carb can be replaced so long as the replacement has the same mounting centers and the same impulse hole.
After that you should try to find one with the same size throat ( usually called choke ) or slightly larger if you can't get one the same.
Obviously a crab gesigned to feed a 22cc cylinder aint going to work on a 30cc cylinder, it jst will not be able to supply enough fuel.
Conversely if the carb is too big you will not get enough draft to provide sufficient suck on the fuel ( call is signal is you want to sound like you know what you are talking about ) to drag it through the check valves and inot the cylinder ( or crankcase if you like ).


#15

Two-Stroke

Two-Stroke

bertsmobile1 said:
None of the current tools are available to any other than an authorised dealer and have to be ordered through the OEM suppliers.
EPA strikes again.
I generally cut the guards off nd then put a slot in the end of the screws.

As for the original question any carb can be replaced so long as the replacement has the same mounting centers and the same impulse hole.
After that you should try to find one with the same size throat ( usually called choke ) or slightly larger if you can't get one the same.
Obviously a crab gesigned to feed a 22cc cylinder aint going to work on a 30cc cylinder, it jst will not be able to supply enough fuel.
Conversely if the carb is too big you will not get enough draft to provide sufficient suck on the fuel ( call is signal is you want to sound like you know what you are talking about ) to drag it through the check valves and inot the cylinder ( or crankcase if you like ).
Click to expand...

That may be the case in Australia but I don't think it's that hard to get those tools here (USA). I agree with the essence of what you're saying: I wish the government would just leave us alone and let us fix our stuff. :mad:

Here's the irony: many trimmers, mowers, etc. end up in a landfill (very wasteful, not good for the environment) because they're so hard (expensive) to fix due to these and similar regulations. :mad:


#16

I

ILENGINE

Two-Stroke said:
That may be the case in Australia but I don't think it's that hard to get those tools here (USA). I agree with the essence of what you're saying: I wish the government would just leave us alone and let us fix our stuff. :mad:

Here's the irony: many trimmers, mowers, etc. end up in a landfill (very wasteful, not good for the environment) because they're so hard (expensive) to fix due to these and similar regulations. :mad:
Click to expand...

Poulan dealers are required to contact Husqvarna to obtain the tools, No longer available through distributor. MTD has stopped supplying the tools to their dealers as of last year. the reason given was the EPA was putting pressure on the company because they were allowing their dealers to adjust an emissions control device without having the instruments to test the exhaust. Yes there are tools being sold illegally on Ebay and the other sites. The EPA has started cracking down on dealers illegally selling the tools, as well as on the consumers for owning them.

As of my last knowledge the fine to the dealer for selling is $38,500 per tool/ per day. Joe blow homeowner can be fined $3,850 per tool/ per day.

the flip side of it is though some of those carbs are getting cheaper than the price of the tool to adjust them. I have come across complete new carbs for push mowers engines and some trimmers that the retail price on the carb is $13.00


#17

B

bertsmobile1

ILENGINE said:
Poulan dealers are required to contact Husqvarna to obtain the tools, No longer available through distributor. MTD has stopped supplying the tools to their dealers as of last year. the reason given was the EPA was putting pressure on the company because they were allowing their dealers to adjust an emissions control device without having the instruments to test the exhaust. Yes there are tools being sold illegally on Ebay and the other sites. The EPA has started cracking down on dealers illegally selling the tools, as well as on the consumers for owning them.

As of my last knowledge the fine to the dealer for selling is $38,500 per tool/ per day. Joe blow homeowner can be fined $3,850 per tool/ per day.

the flip side of it is though some of those carbs are getting cheaper than the price of the tool to adjust them. I have come across complete new carbs for push mowers engines and some trimmers that the retail price on the carb is $13.00
Click to expand...

Yeah, and we are really going to buy a $ 7,000 Co/Co2 meter for doing $ 30 tune ups on handhelds.


However there is much truth in Two-Strokes ending comment.
There is so much embedded pollution in creating short service life products the entire planet would be a lot better off with mandated and enforced minimum quality and service life standards.
If we replaced consummer durable items less frequently then we could afford to buy better ones and the factories could make reasonable profits.
A line trimmer running flat chat as over rich as it could be adjusted to till it blew up will never produce the amount of pollution that was generated in making it, marketing it & delivering it.
Eventually the overweight achne riddled scientifically illerate idiot moron bastards who run the EPA will cotton on to this, but by that time we will all be dead.
Hope the cockroaches make a better job of running the planet than we did.

I had this conversation with one of the self appointed planet savers down here not to long ago when they were adgitating the banning of the use of those filthy dirty smokey earth killing two stroke lawnmowers.
Works out it would take 13 years of operation at 50 hours a year before the two stroke's "dirty" exhaust equalled the difference in the embedded pollution between making the local all cast iron two stroke engine and the equivalent 5 Hp Briggs 4 stroke.
However the 5 Hp quantum engine only has an EPA certified life of 3 years and after 9 years there is no difference in the pollution between the two engines as the 2 stroke dose not wear any where near as fast as the lean burning 4 stroke. They stopped the test at 550 hours when it was becomming very apparent that the Quantum's exhaust was going to eclipse the Powertorque.

If the facts don't support your obsessions, change the facts.


#18

BlazNT

BlazNT

bertsmobile1 said:
Yeah, and we are really going to buy a $ 7,000 Co/Co2 meter for doing $ 30 tune ups on handhelds.


However there is much truth in Two-Strokes ending comment.
There is so much embedded pollution in creating short service life products the entire planet would be a lot better off with mandated and enforced minimum quality and service life standards.
If we replaced consummer durable items less frequently then we could afford to buy better ones and the factories could make reasonable profits.
A line trimmer running flat chat as over rich as it could be adjusted to till it blew up will never produce the amount of pollution that was generated in making it, marketing it & delivering it.
Eventually the overweight achne riddled scientifically illerate idiot moron bastards who run the EPA will cotton on to this, but by that time we will all be dead.
Hope the cockroaches make a better job of running the planet than we did.

I had this conversation with one of the self appointed planet savers down here not to long ago when they were adgitating the banning of the use of those filthy dirty smokey earth killing two stroke lawnmowers.
Works out it would take 13 years of operation at 50 hours a year before the two stroke's "dirty" exhaust equalled the difference in the embedded pollution between making the local all cast iron two stroke engine and the equivalent 5 Hp Briggs 4 stroke.
However the 5 Hp quantum engine only has an EPA certified life of 3 years and after 9 years there is no difference in the pollution between the two engines as the 2 stroke dose not wear any where near as fast as the lean burning 4 stroke. They stopped the test at 550 hours when it was becomming very apparent that the Quantum's exhaust was going to eclipse the Powertorque.

If the facts don't support your obsessions, change the facts.
Click to expand...

I agree with you completely. But what do we know we are not the government talking to the stupid ones. I can not count the number of people that have not a clue they are being lead around by there noses. They want everyone to believe what is said and do not question. Besides the fact that one volcanic eruption puts more polution in the air than Humans have their entire existence.


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