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Many bikes have a fuel overflow at the fill opening at the tank. So excess fuel can drain to the ground. This is done with a tube that comes from the rear of the tank (close to the seat) and routes down under the frame to the ground. If that tube is routed to your battery box then you have a safety issue. Make sure you do not have this drain tube/hose routed to your battery box. I am sure you don't want a fire under your seat.
Before you start.... if you have a digital camera take "close up" PICTURES of the linkages and springs attaching to the carb. If this is your first time you will be so glad you did. You can always delete them later if you don't need them. :)
Here is what you need to do:
1. Fuel selector off 2. Remove float bowl mounting screws and nut 3. Remove the BRASS Jet / Orifice in the very bottom of the venturi tube inside the pickup tube. (Flat blade screwdriver) Hold the Orifice up to the light. You should see a pinhole. If it is not clear clean the orifice but do not force anything through the hole. 4. Underneath the Orifice there is yet another BRASS tube that you need to remove. (Flat blade screwdriver) Make sure all of the holes in the tube are clear. The tube will be over 2 inches long. Clean it and reinstall it. 5. Reinstall the Orifice. 6. Using a catch fuel container turn on the fuel selector. Fuel should flow at a good rate. GENTLY lift the float assy level and make sure fuel flow shuts off. When you drop the float again fuel should flow. If you do not have fuel flow at this point the needle and seat will need to be inspected. Fuel selector OFF. (The following procedure is to be done only if there is no fuel flow with fuel selector on.) a. Remove the silver float pivot pin retaining screw b. Drop the Float down (The needle will come off with the float. NOTE the position) c. Inspect the tapered rubber of the needle If should be pointed. If it is not pointed then the rubber tip is stuck inside the seat. d. Clean the seat hole ONLY if obstructed. (Easily damaged) e. FUEL Selector on then off fuel should rapidly flow through the needle seat. f. Renistall Float and needle making sure to get the pivot / hinge pin installed correctly and reinstall the silver retaining screw. g. Fuel selector ON. Raise and lower float checking for free movement with fuel flow when lowered and stopped when the float is raised level.
NOTE if fuel does NOT stop when float is level you will need to bend the float tab (tab up if level is too high or tab down if level is too low) where the needle attaches to the float assy until it does.
7. If there still is no fuel flow at this point remove the fuel hose from the carb and check fuel flow. If no flow check that gas tank exit hole, fuel filter (if installed) and the selector valve assy for obstructions.
Reassemble connections.
FUEL FLOW IS GOOD
Step 8 is VERY important"
8. BEFORE you install the float bowl inspect the bowl nut. There are 2 holes in the side of the nut where it screws in to the bottom of the carb that must be clear.
9. Install Float bowl mounting screws and nut. Check for leaks.
10. Test engine.
That should do it.
Thanks for using FixYa.
Kelly
Final note... if it does NOT start after this there are other problems we can discuss. i.e compression and spark "how to."
This is how to clean the fuel passages in the carb. Here is what you need to do:
1. Fuel selector off 2. Remove float bowl mounting screws and nut 3. Remove the BRASS Jet / Orifice in the very bottom of the venturi tube inside the pickup tube. (Flat blade screwdriver) Hold the Orifice up to the light. You should see a pinhole. If it is not clear clean the orifice but do not force anything through the hole. 4. Underneath the Orifice there is yet another BRASS tube that you need to remove. (Flat blade screwdriver) Make sure all of the holes in the tube are clear. The tube will be over 2 inches long. Clean it and reinstall it. 5. Reinstall the Orifice. 6. Using a catch fuel container turn on the fuel selector. Fuel should flow at a good rate. GENTLY lift the float assy level and make sure fuel flow shuts off. When you drop the float again fuel should flow. If you do not have fuel flow at this point the needle and seat will need to be inspected. Fuel selector OFF. (The following procedure is to be done only if there is no fuel flow with fuel selector on.) a. Remove the silver float pivot pin retaining screw b. Drop the Float down (The needle will come off with the float. NOTE the position) c. Inspect the tapered rubber of the needle If should be pointed. If it is not pointed then the rubber tip is stuck inside the seat. d. Clean the seat hole ONLY if obstructed. (Easily damaged) e. FUEL Selector on then off fuel should rapidly flow through the needle seat. f. Renistall Float and needle making sure to get the pivot / hinge pin installed correctly and reinstall the silver retaining screw. g. Fuel selector ON. Raise and lower float checking for free movement and fuel flow.
7. If there still is no fuel flow at this point remove the fuel hose from the carb and check fuel flow. If no flow check that gas tank exit hole, fuel filter (if installed) and the selector valve assy for obstructions. Reassemble connections.
FUEL FLOW IS GOOD
8. BEFORE you install the float bowl inspect the bowl nut. There are 2 holes in the side of the nut where it screws in to the bottom of the carb that must be clear.
9. Install Float bowl mounting screws and nut. Check for leaks.
I am wondeing if this was just a seasonal session that the mower was idle? Having said that...
First remove the spark plug and spray wd 40 in generous quantities into the spark plug hole. Turn the engine through slowly 3 or 4 pulls on the recoil. Let it sit for 15 mins. Then pull the recoil rapidly (Spark plug is still removed) Use your thumb over the spark plug hole and have someone pull the recoil. (Your checking for compression)
Compression established...
Recheck the oil level to make sure that the oil level is all the way to the top of the full mark.
Before you install the spark plug connect it to the high voltage lead and ground the base to the cyl. head. (Check for spark!)
Spark extablished
Install the spark plug and attempt a start. If it starts GOOD JOB!
If not.... time to do some carb maintenance below.
This is how to clean the fuel passages in the carb.
Here is what you need to do:
1. Fuel selector off
2. Remove float bowl mounting screws and nut
3. Remove the BRASS Jet / Orifice in the very bottom of the venturi tube inside the pickup tube. (Flat blade screwdriver) Hold the Orifice up to the light. You should see a pinhole. If it is not clear clean the orifice but do not force anything through the hole.
4. Underneath the Orifice there is yet another BRASS tube that you need to remove. (Flat blade screwdriver) Make sure all of the holes in the tube are clear. The tube will be over 2 inches long. Clean it and reinstall it.
5. Reinstall the Orifice.
6. Using a catch fuel container turn on the fuel selector. Fuel should flow at a good rate. GENTLY lift the float assy level and make sure fuel flow shuts off. When you drop the float again fuel should flow.
If you do not have fuel flow at this point the needle and seat will need to be inspected. Fuel selector OFF.
(The following procedure is to be done only if there is no fuel flow with fuel selector on.)
a. Remove the silver float pivot pin retaining screw
b. Drop the Float down (The needle will come off with the float. NOTE the position)
c. Inspect the tapered rubber of the needle If should be pointed. If it is not pointed then the rubber tip is stuck inside the seat.
d. Clean the seat hole ONLY if obstructed. (Easily damaged)
e. FUEL Selector on then off fuel should rapidly flow through the needle seat.
f. Renistall Float and needle making sure to get the pivot / hinge pin installed correctly and reinstall the silver retaining screw.
g. Fuel selector ON. Raise and lower float checking for free movement and fuel flow.
7. If there still is no fuel flow at this point remove the fuel hose from the carb and check fuel flow. If no flow check that gas tank exit hole, fuel filter (if installed) and the selector valve assy for obstructions. Reassemble connections.
FUEL FLOW IS GOOD
8. BEFORE you install the float bowl inspect the bowl nut. There are 2 holes in the side of the nut where it screws in to the bottom of the carb that must be clear.
9. Install Float bowl mounting screws and nut. Check for leaks.
This is how to clean the fuel passages in the carb.
Here is what you need to do:
1. Fuel selector off
2. Remove float bowl mounting screws and bowl nut
3. Remove the BRASS Jet / Orifice in the very bottom of the venturi tube inside the pickup tube. (Flat blade screwdriver) Hold the Orifice up to the light. You should see a pinhole. If it is not clear clean the orifice but do not force anything through the hole.
4. Underneath the Orifice there is yet another BRASS tube that you need to remove. (Flat blade screwdriver) Make sure all of the holes in the tube are clear. The tube will be over 2 inches long. Clean it and reinstall it.
5. Reinstall the Orifice.
6. Using a catch fuel container turn on the fuel selector. Fuel should flow at a good rate. GENTLY lift the float assy level and make sure fuel flow shuts off. When you drop the float again fuel should flow.
If you do not have fuel flow at this point the needle and seat will need to be inspected. Fuel selector OFF.
(The following procedure is to be done only if there is no fuel flow with fuel selector on.)
a. Remove the silver float pivot pin retaining screw
b. Drop the Float down (The needle will come off with the float. NOTE the position)
c. Inspect the tapered rubber of the needle If should be pointed. If it is not pointed then the rubber tip is stuck inside the seat.
d. Clean the seat hole ONLY if obstructed. (Easily damaged)
e. FUEL Selector on then off fuel should rapidly flow through the needle seat.
f. Renistall Float and needle making sure to get the pivot / hinge pin installed correctly and reinstall the silver retaining screw.
g. Fuel selector ON. Raise and lower float checking for free movement and fuel flow.
7. If there still is no fuel flow at this point remove the fuel hose from the carb and check fuel flow. If no flow check that gas tank exit hole, fuel filter (if installed) and the selector valve assy for obstructions. Reassemble connections.
FUEL FLOW IS GOOD
8. BEFORE you install the float bowl inspect the bowl nut. There are 2 holes in the side of the nut where it screws in to the bottom of the carb that must be clear.
9. Install Float bowl mounting screws and nut. Check for leaks.
I am wondeing if this was just a seasonal session that the mower was idle? Having said that...
First remove the spark plug and spray wd 40 in generous quantities into the spark plug hole. Turn the engine through slowly 3 or 4 pulls on the recoil. Let it sit for 15 mins. Then pull the recoil rapidly (Spark plug is still removed) Use your thumb over the spark plug hole and have someone pull the recoil. (Your checking for compression)
Compression established...
Recheck the oil level to make sure that the oil level is all the way to the top of the full mark.
Before you install the spark plug connect it to the high voltage lead and ground the base to the cyl. head. (Check for spark!)
Spark extablished
Make sure the WD 40 you sprayed into the cylinder has been purged.
Install the spark plug and attempt a start. If it starts GOOD JOB!
If not.... time to do some carb maintenance below.
This is how to clean the fuel passages in the carb. Here is what you need to do:
1. Fuel selector off 2. Remove float bowl mounting screws and nut 3. Remove the BRASS Jet / Orifice in the very bottom of the venturi tube inside the pickup tube. (Flat blade screwdriver) Hold the Orifice up to the light. You should see a pinhole. If it is not clear clean the orifice but do not force anything through the hole. 4. Underneath the Orifice there is yet another BRASS tube that you need to remove. (Flat blade screwdriver) Make sure all of the holes in the tube are clear. The tube will be over 2 inches long. Clean it and reinstall it. 5. Reinstall the Orifice. 6. Using a catch fuel container turn on the fuel selector. Fuel should flow at a good rate. GENTLY lift the float assy level and make sure fuel flow shuts off. When you drop the float again fuel should flow. If you do not have fuel flow at this point the needle and seat will need to be inspected. Fuel selector OFF. (The following procedure is to be done only if there is no fuel flow with fuel selector on.) a. Remove the silver float pivot pin retaining screw b. Drop the Float down (The needle will come off with the float. NOTE the position) c. Inspect the tapered rubber of the needle If should be pointed. If it is not pointed then the rubber tip is stuck inside the seat. d. Clean the seat hole ONLY if obstructed. (Easily damaged) e. FUEL Selector on then off fuel should rapidly flow through the needle seat. f. Renistall Float and needle making sure to get the pivot / hinge pin installed correctly and reinstall the silver retaining screw. g. Fuel selector ON. Raise and lower float checking for free movement and fuel flow.
7. If there still is no fuel flow at this point remove the fuel hose from the carb and check fuel flow. If no flow check that gas tank exit hole, fuel filter (if installed) and the selector valve assy for obstructions. Reassemble connections.
FUEL FLOW IS GOOD
8. BEFORE you install the float bowl inspect the bowl nut. There are 2 holes in the side of the nut where it screws in to the bottom of the carb that must be clear.
9. Install Float bowl mounting screws and nut. Check for leaks.
First remove the spark plug and spray wd 40 in generous quantities into the spark plug hole. Turn the engine through slowly 3 or 4 pulls on the recoil. Let it sit for 15 mins. Then pull the recoil rapidly (Spark plug is still removed) Use your thumb over the spark plug hole and have someone pull the recoil. (Your checking for compression)
Compression established...
Recheck the oil level to make sure that the oil level is all the way to the top of the full mark.
Before you install the spark plug connect it to the high voltage lead and ground the base to the cyl. head. (Check for spark!)
Spark extablished
Ensure that most all of the WD 40 you sprayed into the engine has purged.
Install the spark plug and attempt a start. If it starts GOOD JOB!
If not.... time to do some carb maintenance below.
This is how to clean the fuel passages in the carb. Here is what you need to do:
1. Fuel selector off 2. Remove float bowl mounting screws and nut 3. Remove the BRASS Jet / Orifice in the very bottom of the venturi tube inside the pickup tube. (Flat blade screwdriver) Hold the Orifice up to the light. You should see a pinhole. If it is not clear clean the orifice but do not force anything through the hole. 4. Underneath the Orifice there is yet another BRASS tube that you need to remove. (Flat blade screwdriver) Make sure all of the holes in the tube are clear. The tube will be over 2 inches long. Clean it and reinstall it. 5. Reinstall the Orifice. 6. Using a catch fuel container turn on the fuel selector. Fuel should flow at a good rate. GENTLY lift the float assy level and make sure fuel flow shuts off. When you drop the float again fuel should flow. If you do not have fuel flow at this point the needle and seat will need to be inspected. Fuel selector OFF. (The following procedure is to be done only if there is no fuel flow with fuel selector on.) a. Remove the silver float pivot pin retaining screw b. Drop the Float down (The needle will come off with the float. NOTE the position) c. Inspect the tapered rubber of the needle If should be pointed. If it is not pointed then the rubber tip is stuck inside the seat. d. Clean the seat hole ONLY if obstructed. (Easily damaged) e. FUEL Selector on then off fuel should rapidly flow through the needle seat. f. Renistall Float and needle making sure to get the pivot / hinge pin installed correctly and reinstall the silver retaining screw. g. Fuel selector ON. Raise and lower float checking for free movement and fuel flow.
7. If there still is no fuel flow at this point remove the fuel hose from the carb and check fuel flow. If no flow check that gas tank exit hole, fuel filter (if installed) and the selector valve assy for obstructions. Reassemble connections.
FUEL FLOW IS GOOD
8. BEFORE you install the float bowl inspect the bowl nut. There are 2 holes in the side of the nut where it screws in to the bottom of the carb that must be clear.
9. Install Float bowl mounting screws and nut. Check for leaks.
Hi and welcome to FixYa. I am Kelly. This is how to clean the fuel passages in the carb. Here is what you need to do:
1. Fuel selector off 2. Remove float bowl mounting screws and nut 3. Remove the BRASS Jet / Orifice in the very bottom of the venturi tube inside the pickup tube. (Flat blade screwdriver) Hold the Orifice up to the light. You should see a pinhole. If it is not clear clean the orifice but do not force anything through the hole. 4. Underneath the Orifice there is yet another BRASS tube that you need to remove. (Flat blade screwdriver) Make sure all of the holes in the tube are clear. The tube will be over 2 inches long. Clean it and reinstall it. 5. Reinstall the Orifice. 6. Using a catch fuel container turn on the fuel selector. Fuel should flow at a good rate. GENTLY lift the float assy level and make sure fuel flow shuts off. When you drop the float again fuel should flow. If you do not have fuel flow at this point the needle and seat will need to be inspected. Fuel selector OFF. (The following procedure is to be done only if there is no fuel flow with fuel selector on.) a. Remove the silver float pivot pin retaining screw b. Drop the Float down (The needle will come off with the float. NOTE the position) c. Inspect the tapered rubber of the needle If should be pointed. If it is not pointed then the rubber tip is stuck inside the seat. d. Clean the seat hole ONLY if obstructed. (Easily damaged) e. FUEL Selector on then off fuel should rapidly flow through the needle seat. f. Renistall Float and needle making sure to get the pivot / hinge pin installed correctly and reinstall the silver retaining screw. g. Fuel selector ON. Raise and lower float checking for free movement and fuel flow.
7. If there still is no fuel flow at this point remove the fuel hose from the carb and check fuel flow. If no flow check that gas tank exit hole, fuel filter (if installed) and the selector valve assy for obstructions. Reassemble connections.
FUEL FLOW IS GOOD
8. BEFORE you install the float bowl inspect the bowl nut. There are 2 holes in the side of the nut where it screws in to the bottom of the carb that must be clear.
9. Install Float bowl mounting screws and nut. Check for leaks.
10. Test engine.
That should do it. (carb cleaning 101)
Thanks for using FixYa.
Kelly
P.S. If it still does not start and you have a primer bulb on the carb the primer bulb most likely has a hole in it. Press and hold the primer bulb CLOSED against the carb inner mating surfaces and see if it will start. (2 people required) If it starts and runs the primer bulb has a pin hole in it.
Hi and welcome to FixYa. I am Kelly.
When you said you cleaned the carb did your remove the float bowl? Here is what you need to do:
1. Fuel selector off
2. Remove float bowl mounting screws and nut
3. Remove the BRASS Jet / Orifice in the very bottom of the venturi tube inside the pickup tube. (Flat blade screwdriver) Hold the Orifice up to the light. You should see a pinhole. If it not clear clean the orifice but do not force anything through the hole.
4. Underneath the Orifice there is yet another BRASS tube that you need to remove. (Flat blade screwdriver) Make sure all of the holes in the tube are clear. The tube will be over 2 inches long. Clean it and reinstall it.
5. Reinstall the Orifice.
6. Using a catch fuel container turn on the fuel selector. Fuel should flow at a good rate. GENTLY lift the float assy level and make sure fuel flow shuts off. When you drop the float again fuel should flow.
If you do not have fuel flow at this point the needle and seat will need to be inspected. Fuel selector OFF.
(The following procedure is to be done only if there is no fuel flow with fuel selector on.)
a. Remove the silver float pivot pin retaining screw
b. Drop the Float down (The needle will come off with the float. NOTE the position)
c. Inspect the tapered rubber of the needle If should be pointed. If it is not pointed then the rubber tip is stuck inside the seat.
d. Clean the seat hole ONLY if obstructed. (Easily damaged)
e. FUEL Selector on then off fuel should rapidly flow through the needle seat.
f. Renistall Float and needle making sure to get the pivot / hinge pin installed correctly and reinstall the silver retaining screw.
g. Fuel selector ON. Raise and lower float checking for free movement and fuel flow.
7. If there sitll is not fuel flow at this point remove the fuel hose from the carb and check fuel flow. If no flow check that gas tank exit hole, fuel filter (if installed) and the selector valve assy for obstructions. Reassemble connections.
FUEL FLOW IS GOOD
8. BEFORE you install the float bowl inspect the bow nut. There are 2 holes in the side of the nut where it screws in to the bottom of the carb that must be clear.
9. Install Float bowl mounting screws and nut. Check for leaks.
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