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FJ180V carburetor re-installation help!!

#1

F

Frank Woodbery

I recently cleaned the carburetor on an FJ180V. I found that in reinstalling the carburetor it is difficult to snake it around the intake manifold and hook up the throttle/choke linkages. I also don't want to mess up the new gaskets. Is there a simple trick to completely remove the intake manifold first to gain access to the mounting location? This is the FJ180V with the flat air filter, not the cylindrical filter as is now used on the Kai engines. I am including photos including the engine ID tag to help explain below. Thanks in advance!

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#2

T

txmowman

The proper thing to do is to remove the fan housing/fuel tank. There is an o-ring at the top of the intake pipe. If it is compromised by pulling the intake pipe away to slip the carburetor back in, you could possibly get dirt ingestion. Also would be a good time to inspect and replace the inexpensive o-ring possibly.


#3

F

Frank Woodbery

Thanks for the suggestion. I will replace the fuel filter when I get around to this. Good tip on checking the o ring. Seems like it should be less disassembly just to re-install the carburetor.


#4

S

slomo

txmowman said:
The proper thing to do is to remove the fan housing/fuel tank.
Click to expand...
AND, AND clean the engine block and head (cooling fins) of all that oily dirt buildup I'm seeing. These are AIR COOLED engines. If you have a mummy wrap of grit and grass, she won't cool down proper. Clean your cooling fins while you are there. Clean fins is a yearly, or more often, maintenance item, in EVERY engine manual out there. Neglect this and risk engine damage. Let that percolate a bit. All air cooled engines need this attention.


#5

S

slomo

Use silicone grease on the O-ring.


#6

S

slomo

Lastly recommend you download your engine manual. Look at the carb area for proper choke operation. These engines have a tricky setup. Once you read it you will understand what I'm talking about. I've bought several of these with the carb linkages all fouled up. Set back proper they run like a top.


#7

kbowley

kbowley

I am having a tough time finding a 180 with a protruding horn from the intake manifold; there should be just two gaskets and an insulator. Can you provide the model code, i.e., fj180v-cm03, please? Remove the intake tube so you have some room to work or simply remove the air filter housing intact. I would replace all the gaskets, as they are rough but may still work okay, as the inner sides close to the carb bore are intact. Once the air filter tube is removed, you should be able to angle the carb easier to get first the choke linkage, then the throttle linkage and spring hooked up. That breather tube is rough, and I recommend replacement to prevent ingestion, being that it comes in after the filter. Please get back to us with the full model number. Thanks


#8

F

Frank Woodbery

slomo said:
AND, AND clean the engine block and head (cooling fins) of all that oily dirt buildup I'm seeing. These are AIR COOLED engines. If you have a mummy wrap of grit and grass, she won't cool down proper. Clean your cooling fins while you are there. Clean fins is a yearly, or more often, maintenance item, in EVERY engine manual out there. Neglect this and risk engine damage. Let that percolate a bit. All air cooled engines need this attention.
Click to expand...


#9

F

Frank Woodbery

Good point. I've used this engine reliably for at least 15 years of homeowner service, not commercial. Now that I have the carb off and will pull the shroud off, yes I'll clean everything up as I will have access.


#10

F

Frank Woodbery

kbowley said:
I am having a tough time finding a 180 with a protruding horn from the intake manifold; there should be just two gaskets and an insulator. Can you provide the model code, i.e., fj180v-cm03, please? Remove the intake tube so you have some room to work or simply remove the air filter housing intact. I would replace all the gaskets, as they are rough but may still work okay, as the inner sides close to the carb bore are intact. Once the air filter tube is removed, you should be able to angle the carb easier to get first the choke linkage, then the throttle linkage and spring hooked up. That breather tube is rough, and I recommend replacement to prevent ingestion, being that it comes in after the filter. Please get back to us with the full model number. Thanks
Click to expand...
It's a Snapper spec engine with a 25mm crankshaft but I don't recall the full model code. Sorry, but I'll look for it.


#11

kbowley

kbowley

Frank Woodbery said:
Thanks for the suggestion. I will replace the fuel filter when I get around to this. Good tip on checking the o ring. Seems like it should be less disassembly just to re-install the carburetor.
Click to expand...
Try a Honda GCV if you think that's bad...LOL!


#12

F

Frank Woodbery

Here is the engine ID tag. FJ180V BS13-S

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#13

F

Frank Woodbery

kbowley said:
I am having a tough time finding a 180 with a protruding horn from the intake manifold; there should be just two gaskets and an insulator. Can you provide the model code, i.e., fj180v-cm03, please? Remove the intake tube so you have some room to work or simply remove the air filter housing intact. I would replace all the gaskets, as they are rough but may still work okay, as the inner sides close to the carb bore are intact. Once the air filter tube is removed, you should be able to angle the carb easier to get first the choke linkage, then the throttle linkage and spring hooked up. That breather tube is rough, and I recommend replacement to prevent ingestion, being that it comes in after the filter. Please get back to us with the full model number. Thanks
Click to expand...
FJ180V-BS13-S photo of it attached.

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#14

kbowley

kbowley

Frank Woodbery said:
FJ180V-BS13-S photo of it attached.
Click to expand...
I see now that what I thought was a horn is actually a plug to stop debris from getting in. Me big dummy! Any who Here is the parts diagram for your engine. That is one pricey carburetor.


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