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can someone help me find the right part?

#1

2ball

2ball

YTH 20B42 (960430032-00) - Husqvarna​

I am looking for the fuel tank Grommet /bushing. I see there are a couple that look exactly the same. I ordered one that the part number ends in 645, but that one started leaking after 3 weeks. I am not sure if that is the wrong part or it leaked because I bought a generic one.

thanks.


#2

StarTech

StarTech

Well first don't keep the damn part number that you ordered a secret. Yes I am getting irritated at posters keeping things secret like we are going to steal their mowers.

Plus what tank hole size as here Husqvarna IPL don't list a tank grommet (bushing)? I fairly sure which bushing fits the 599306002 tank but need verify the hole size.


#3

2ball

2ball

532139277 Fuel Tank Stem & 532003645 Bushing Kit for Husqvarna is the kit I ordered and tried and failed.​

I have been on chat with Husqvarna and they said they don't sell the grommet separate and I should buy a new gas tank ($120). the part number they gave me for the gas tank is

The part number for the fuel tank is 532 40 74-89 and has a superseded part number 581290101.​

my old grommet has the number 224 on it.
I don't have the 599306002 tank.


#4

2ball

2ball

StarTech said:
Well first don't keep the damn part number that you ordered a secret. Yes I am getting irritated at posters keeping things secret like we are going to steal their mowers.

Plus what tank hole size as here Husqvarna IPL don't list a tank grommet (bushing)? I fairly sure which bushing fits the 599306002 tank but need verify the hole size.
Click to expand...
How is the hole sized measured? across? in MM or inches?


#5

StarTech

StarTech

Then the site I looked up the YTH20B42 has the wrong info listed apparently.

As for the 532003645 bushing it is for a 1/2" /13MM hole. The bushing should have 9/16" (.56) OD where it goes into the tank.

And these are all the crosses that I know of for this Grommet / Bushing
1686245352456.png

And yes I know the tank has been superseded.
1686241980608.png
And it is listed under $100. I paid $XX that last time I brought one but it has gone up a little. Not telling my cost on this as it is non public info.
1686242262987.png


#6

2ball

2ball

Everything seems correct. I ordered an OEM grommet, the one that ends 645. Maybe the generic one uses cheap rubber. The old one is much harder then the generic one.

I am not supposed to use some kind of sealant am I?


#7

StarTech

StarTech

No just some Vaseline or oil to lube it so things goes together easier and not tear.


#8

B

bertsmobile1

No but a bit of rubber grease ( the red stuff ) will make it easier to fit and reduce the chance of damage to either the grommet or tank


#9

2ball

2ball

StarTech said:
No just some Vaseline or oil to lube it so things goes together easier and not tear.
Click to expand...
ok, so here is what I got. I am not so sure the new OEM grommet is going to work. I measured these with a caliper so they are right.
my hole is 14mm wide
the stem is 10mm wide
the grommet outside dim is 13.5 mm wide


So when I put the stem in the grommet its only around 14mm or 14.5 where it flares out.
It's probably going to leak again. hopefully the OEM grommet is a little bigger, we will see.

Is there a sealant I can use that will stand up to gas?


#10

2ball

2ball

this is throwing me. the stem is 10mm wide the grommet where the stem goes is 3mm thick, so if the stem is inserted into the grommet its 16mm wide, so on paper is should work. but the rubber is soft and it compresses too much.


#11

B

bertsmobile1

That should make for a better seal
Soft will conform hard will not conform
Just so long as you get the sides of the tank into the groove all the way round .


#12

StarTech

StarTech

Okay here is some actual measurements of the M132706 bushing. IE the Husqvarna 532003645 bushing. I use the JD bushing as it is the lowest cost one of the alternates at the time I order the stock I have but Stens is the same now.

OD 14.2mm (9/16") ID 8.82mm (11/32") OD of larger diameter rubber part is 27mm (1-1/16"). Spec sheet shows 9.55mm (3/8") ID

As for OD after insertion you are forget that as you stretch the rubber it will get thinner.


#13

2ball

2ball

StarTech said:
As for OD after insertion you are forget that as you stretch the rubber it will get thinner.
Click to expand...
right, so unless the OEM grommet (which it getting delivered today) is a couple mm larger then the generic ones I have, I don't see how it will give a proper seal.


#14

2ball

2ball

my hole is 14mm, not 13. that 1 mm is throwing everything off, I think.


#15

F

Forest#2

I've seen issues such as yours where a replacement gas tank grommet would leak usually because the OEM nipple or adapter going through the new replacement grommet on some lawn tractor tanks was not quite large enough for the new grommet so as to get a good snug friction fit. I can usually find a slightly larger hose barb nipple to get a good snug fit. Not a fun thing for something that should be simple fix and replacement grommet just not quite correct.

Seems strange that the replacement grommets that are suppose to be same as the OEM, but it happens. Seems they (probably China) get mm and inches sizes slightly wrong, just enough that a slow leak develops and not a fun thing on rear mounted lawn tractor tanks where the whole back end of the tractor has to be removed to get the tank removed AGAIN later. Tanks is good, just a wimpy grommet not correct for the OEM fuel line.


#16

2ball

2ball

Forest#2 said:
I've seen issues such as yours where a replacement gas tank grommet would leak usually because the OEM nipple or adapter going through the new replacement grommet on some lawn tractor tanks was not quite large enough for the new grommet so as to get a good snug friction fit. I can usually find a slightly larger hose barb nipple to get a good snug fit. Not a fun thing for something that should be simple fix and replacement grommet just not quite correct.

Seems strange that the replacement grommets that are suppose to be same as the OEM, but it happens. Seems they (probably China) get mm and inches sizes slightly wrong, just enough that a slow leak develops and not a fun thing on rear mounted lawn tractor tanks where the whole back end of the tractor has to be removed to get the tank removed AGAIN later. Tanks is good, just a wimpy grommet not correct for the OEM fuel line.
Click to expand...
yea, something that should be a $5 fix may cost me a new $90 tank with the grommet already included. If I could glue on a nipple over the hole and just attach the fuel line to the nipple that would be great, I have see gas tanks like that.


#17

2ball

2ball

I bought an OEM Husqvarna grommet and it has held up for a month. The generic ones I bought shrank, got hard and would leak. OEM part saved the day.


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