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Zama W-26 Carb. Cleaning

#1

F

fayjim2

Can spray carb cleaner be used to clean internaly a Zama W-26 Carb????


#2

I

ILENGINE

It has been my experience that the spray carb and choke cleaners cause the rubber check valves to swell stopping fuel flow to the main jet and cause a no start issue. Or sticks open and will prevent priming because the primer will suck air.


#3

F

fayjim2

Where are these rubber check valves????


#4

I

ILENGINE

It is contained inside of the brass insert in the center of this picture. Stick closed won't start, stick open won't prime. That is the outlet check valve, main fuel nozzle. Some have an inlet check valve that can cause other start/run issues.

1687539860339.png


#5

StarTech

StarTech

slomo said:
Strip the carb down to bare metal. Spray away with SAFETY GLASSES ON.
Click to expand...
Only if you don't believe IL about the rubber check valve damage.

Here it is only soap and water in an USC. For preclean I use 2 cycle fuel mix as that is what the carburetor is designed to run on. And no hi air pressure used either as it damage the same check valves.


#6

S

slomo

StarTech said:
Only if you don't believe IL about the rubber check valve damage.

Here it is only soap and water in an USC. For preclean I use 2 cycle fuel mix as that is what the carburetor is designed to run on. And no hi air pressure used either as it damage the same check valves.
Click to expand...
Of course. My bad, forgot this was a 2 smoke carb. Deleted my poor info.


#7

B

bertsmobile1

Yep soap & water for me as well.
One of my wholesalers used to be the Walbro distribuor & Oregon distributor
Unfortunately as B & S get out of making their own stuff and transittion into distributing other peoples products both of these have been taken over by B & S ,
And B & S Australia are not going to bring the new check valve safe carb cleaner that Walbro has formulated into Australia as they concentrate on selling through supermarket & mower franchised chains .


#8

I

ILENGINE

bertsmobile1 said:
Yep soap & water for me as well.
One of my wholesalers used to be the Walbro distribuor & Oregon distributor
Unfortunately as B & S get out of making their own stuff and transittion into distributing other peoples products both of these have been taken over by B & S ,
And B & S Australia are not going to bring the new check valve safe carb cleaner that Walbro has formulated into Australia as they concentrate on selling through supermarket & mower franchised chains .
Click to expand...
I have a case of the Walbro carb cleaner thinking it would be safe for the check valves. Nope. Still damaged the valves and renders the carb useless.


#9

StarTech

StarTech

ILENGINE said:
I have a case of the Walbro carb cleaner thinking it would be safe for the check valves. Nope. Still damaged the valves and renders the carb useless.
Click to expand...
I kinda figured that would be the case so I never fell for the stuff.


#10

B

bertsmobile1

Well that is very good to know as the stuff is very expensive


#11

F

fayjim2

I started this thread for a No Start issue unless I sprayed down the plug hole. Then it would run only at high throttl settings. It would not start 5 minutes later I primed and primed no start. So is it possible I can clean with soap and water and possibly clean it out or is it ready for the trash? My son never emptied the gas out and ran till it stopped,since new,its a woodshark Poulan at least ten years old and only used for camp trips, dam thing looks new Thanks


#12

PTmowerMech

PTmowerMech

Soap and water
StarTech said:
Only if you don't believe IL about the rubber check valve damage.

Here it is only soap and water in an USC. For preclean I use 2 cycle fuel mix as that is what the carburetor is designed to run on. And no hi air pressure used either as it damage the same check valves.
Click to expand...

Before removing the 2c carbs, I've sprayed WD40 on them and let them sit for about 5 minutes. Then blow them off with air. Then remove and teardown to clean in the inside (in the USC).

Is there a problem with WD on the outside of the carb? (Before removing it from the engine).

WD 40 cleans aluminum like nobody's business.


#13

PTmowerMech

PTmowerMech

fayjim2 said:
Can spray carb cleaner be used to clean internaly a Zama W-26 Carb????
Click to expand...
The last shop I worked for, the tech only used this "top engine cleaner and lube" to clean out the inside of 2C carbs. He never used compressed air. He was a very good 2 cycle guy.
Just a little bit will do ya.
1687622830247.png


#14

B

bertsmobile1

I soda blast the outsides then wash it off with hot water
Inside they get no sprays at all and never any compressed air to do cleaning
I do use degreaser to verify flow but nothing with a solvent in it .


#15

sgkent

sgkent

https://www.carbtech21.com/default.asp is where I get parts for these type carbs. W-26 is only part of the model number. There are several xxxxxx-w26 models.


#16

StarTech

StarTech

C1M-W26
All five versions use the same RB-129 Carb repair kit.


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