kaw fv150V snapper running problem

[sixtots]

Gentlemen, I am having trouble getting my 21" snapper too continue to run without the choke closed.when you reduced throttle from choke to rabbit the engine dies. the only throttle/ gov rigging i have found on the internet anywhere is on your web site for a slighty different engine. I have a FC150V-ES21. will you need the engine number? My trusted snapper repair shop was just sold,and the skilled labor has moved on. So i am looking for a clue on your forum. Thanks sixtots

[Phil G]

Gentlemen, I am having trouble getting my 21" snapper too continue to run without the choke closed.when you reduced throttle from choke to rabbit the engine dies. the only throttle/ gov rigging i have found on the internet anywhere is on your web site for a slighty different engine. I have a FC150V-ES21. will you need the engine number? My trusted snapper repair shop was just sold,and the skilled labor has moved on. So i am looking for a clue on your forum. Thanks sixtots


Hi Sixtots. Sure sounds like fuel starvation problem.
Check in order
Fuel tank cap breather not blocked
Fuel tap (if fitted) not blocked.
Remove fuel pipe from carb end and check fuel flows freely

But the most probable answer is a partially blocked main jet.
Carefully remove the carb bowl being careful the float does not fall out.
Check fuel is entering carb at this stage.
The main jet runs up the centre of the carb body where you removed the bolt.
Either carfully clear with an air line or use carb cleaner. Reassemble and it'll be off like a dream:)


Good luck, Phil

[mowermankevin]

Do all that Phil said, (Hi Phil), in the order that he has written, if that doesn't do it, than try taking the gas cap loose and starting the engine and letting it run on concrete,(to keep the dirt away, and see if it still runs after 10 minutes), 150V engines are getting old, so whatever you need to buy should be available as scrap units,(I have lots of them, and junking them out), but most likely, it's dirt in the carb, or more likely, old gas left in the tank

[sixtots]

Thanks Phil and Kevin, there was fuel jelly in the fuel bowl and some had migrated to the main metering jet. After rinsing carb w carb cleaner and reassembly. the snapper runs smoothly at rabbitt and slows to turtle. At low speed the eng doesn't run as smooth as at power. Very nice to get some pro help here. Thanks again, sixtots.

[Phil G]

Thanks Phil and Kevin, there was fuel jelly in the fuel bowl and some had migrated to the main metering jet. After rinsing carb w carb cleaner and reassembly. the snapper runs smoothly at rabbitt and slows to turtle. At low speed the eng doesn't run as smooth as at power. Very nice to get some pro help here. Thanks again, sixtots.


Been a long time since I've seen one of these engines. But, if it's like most there should be a low engine rev's mixture screw.

You've got the throttle stop adjuster that acts directly to the throttle shaft. If there is another screw it could be air bleed or fuel, try adjusting this screw to see if the revs smooth out.

Hopefully Kevin will be along soon to confirm.


Good luck, Phil:ukflag:

[Restrorob]

Hello sixtots and Phil,

Here is a break-down of the carb in question, As you can see part ref. #8 is the low rpm mixture adjustment screw.


http://i107.photobucket.com/albums/m314/Restrorob/Kawasaki/FB/FB460CarbBreakDown.jpg


Turn this screw in until LIGHTLY seated counting the turns, Then remove it completely. Now....Remove part ref. #9 pilot jet, There is a small hole in the tip. Make sure it's open, I use a bristle bent out to the side on my hand wire brush. Take the straw on your carb & choke cleaner and stick it in each of these holes, This will clean/flush these passages.

Now,
Reinstall both lightly seating the mixture screw then backing it out the number of turns you counted earlier. If it still doesn't run just right adjust this screw to see if it will smooth out.


Good Luck

[Phil G]

Good info Rob, hadn't seen you for a day or two. Thought you'd won the lottery and pissed off to the sunshine.

atb Phil:usflag:

[RonAyersMotorsports]

Good job Phil. I still think its humorous when people use the choke to make up for starving fuel and then still ask "Whats wrong with my engine." The reality is they are just asking for some quick fix when the only way to fix the problem is to clean the carb just like they knew they would have to do to start with.

[sixtots]

Rob, this is good info. I have used this kaw fc-150v pwrd snapper for the last 10 years. each season the dealership chgs oil,air filter,and spark plug, probably cleaned the carb too. This is an overhead cam engine. Are the valves adjustable? And where would i find an maintenance manual to maintain this engine? Thanks sixtots.

[Restrorob]

Just wondering sixtots, Do you really have sixtots ? LOL....

Yes, These valves are adjustable. Below is the adjustment procedure, You will have to go to a Kawasaki dealer and purchase a service manual. It's part number 99924-2020-02....


http://i107.photobucket.com/albums/m314/Restrorob/Kawasaki/FC/FC150ValveAdjustment.jpg


Good Luck

[Valk]

...for the last 10 years. each season the dealership chgs oil,air filter,and spark plug, probably cleaned the carb too.

Just a guess that a "general tuneup" does not include an intensive cleaning of the carb via carb-removal. Is this a Winterization tuneup...or a Spring tuneup?

Some brand/kind of fuel stabilizer sounds like a good call for over the Winter and occasionally throughout the mowing season. Seafoam?

If I'm full of it then let me know please. *trucewhiteflag*

[Phil G]

Just a guess that a "general tuneup" does not include an intensive cleaning of the carb via carb-removal. Is this a Winterization tuneup...or a Spring tuneup?

Some brand/kind of fuel stabilizer sounds like a good call for over the Winter and occasionally throughout the mowing season. Seafoam?

If I'm full of it then let me know please. *trucewhiteflag*


If I'm full of it then let me know please Far from it my friend:drinkup:

Make sense to take precautions against damage.

However did does do us mechanics out of a few £ £ £ £ £'s.

So ignore my first comment, and you LCO's out there keep neglecting your equipment.:laugh:




Okay............... I'll get my coat



Good luck, Phil

[sixtots]

Hey Guys, i rinsed the carburator again w carb cleaner without disturbing the linkages, reassembled and ran the engine for a short time.maybe two minutes. A few days later while trying to start the kaw fc-150v pwrd snapper fuel is spitting out the exhaust,and the spark plug is fouled with fuel. How did i screw up this time? sixtots

[Phil G]

Hey Guys, i rinsed the carburator again w carb cleaner without disturbing the linkages, reassembled and ran the engine for a short time.maybe two minutes. A few days later while trying to start the kaw fc-150v pwrd snapper fuel is spitting out the exhaust,and the spark plug is fouled with fuel. How did i screw up this time? sixtots





d'oh, don't yer just hate it when that happen?

Seems like the carb float needle is not shutting fully.

Straight forward fix though. Just remove the carb, turn it upside down, carefully remove bowl, float pivot pin an float and needle. Check where the needle seats, there might be some crap there.

When refitting (still upside down) make sure the float is horizontal to the float body. Also check float for damage.

Good luck, Phil:usflag:

[sixtots]

just as you said, there was a little trash at the needle seat. cleaned seat with compressed air and solvent. reassembled carburator and ran the mower, which runs well at rabbit,and a little hesitant at turtle. will need to clean low idle seat as suggusted in earlier posts. thanks Phil.

[Phil G]

Just an after thought, when you're at the store next buy an in-line fuel filter. You might have an on going problem with crap in the tank.

Just cut the fuel line at a suitable point and fit the filter. Depending on how the pipe runs you may have to remove a section of fuel pipe to accommodate the filter.

Good luck, Phil:usflag: