3F0-87122-1 CARBURETOR REPAIR KIT Tohatsu
M2.5A2, M3.5A2, M3.5B2
CARBURETOR
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Accessories 3F0-87122-0 Carburetor Repair Kit For 2.5 3.5 HP Outboard Engine 3F0-87122-1 3F0-87122-2 3F0871220 3F0871221
Loczek Crafted with precision and attention to detail, this carburetor is built to deliver exceptional performance and reliability. It regulates the air-fuel mixture in your engine, ensuring efficient combustion and smooth operation. || Designed to withstand the demanding marine environment, this carburetor is constructed using durable materials that resist corrosion and wear. || Made of materials, this carburetor is built to withstand the harsh conditions of marine environments. It is reliable, ensuring long-lasting performance. || Brand new premium marine carburetors are improved versions of the original, and we've solved every possible problem to help your boat run at peak performance. Excellent compatibility, 100% tested before shipping, perfect for replacing defective carb components. || The carburetor features advanced technology that improves fuel efficiency, helping you save on fuel costs while enjoying optimal engine performance.
Loczek Crafted with precision and attention to detail, this carburetor is built to deliver exceptional performance and reliability. It regulates the air-fuel mixture in your engine, ensuring efficient combustion and smooth operation. || Designed to withstand the demanding marine environment, this carburetor is constructed using durable materials that resist corrosion and wear. || Made of materials, this carburetor is built to withstand the harsh conditions of marine environments. It is reliable, ensuring long-lasting performance. || Brand new premium marine carburetors are improved versions of the original, and we've solved every possible problem to help your boat run at peak performance. Excellent compatibility, 100% tested before shipping, perfect for replacing defective carb components. || The carburetor features advanced technology that improves fuel efficiency, helping you save on fuel costs while enjoying optimal engine performance.
YFLRHENJ Outboard Engine Carburetor Repair Kit 3F0-87122-0 Compatible with 2.5 3.5 Models 3F0-87122-1 3F0-87122-2 3F0871221 3F0871220
YFLRHENJ Durability: Designed to withstand harsh marine environments Compatible with performance. || Compatibility: Fits various models, ensuring a match Compatible with your outboard engine needs. || Efficiency: Enhances fuel flow and engine performance Compatible with a smoother boating experience. || Installation: Easy to install with included instructions, saving you time and effort. || Maintenance: Helps restore your engine's functionality, prolonging its and reliability.
YFLRHENJ Durability: Designed to withstand harsh marine environments Compatible with performance. || Compatibility: Fits various models, ensuring a match Compatible with your outboard engine needs. || Efficiency: Enhances fuel flow and engine performance Compatible with a smoother boating experience. || Installation: Easy to install with included instructions, saving you time and effort. || Maintenance: Helps restore your engine's functionality, prolonging its and reliability.
ZTBH Carburetor Kit Boat Motors Carburetor Repair Kit for 3F0-87122-1 Motors Carberature
ZTBH Package Includes: 1 Set Carburetor Repair Kit. || Made of selected high-quality metal materials, resistant to wear, and not easily damaged. || Professional manufacturing, exquisite workmanship, stable performance, can be used for a long time.
ZTBH Package Includes: 1 Set Carburetor Repair Kit. || Made of selected high-quality metal materials, resistant to wear, and not easily damaged. || Professional manufacturing, exquisite workmanship, stable performance, can be used for a long time.
Number on catalog scheme: 2
Tohatsu entire parts catalog list:
- ASSEMBLY KIT » 3F0-87122-1
- ASSEMBLY KIT » 3F0-87122-1
- ASSEMBLY KIT » 3F0-87122-1
Information:
Probable Causes
Fuel injector O-ring seals
Fuel injector tip
Fuel transfer pump seal
High-pressure fuel pump
Cracked cylinder headRecommended Actions
Complete the procedure in the order in which the steps are listed.
Table 1
Troubleshooting Test Steps Values Results
1. Leaking Seals
A. Remove the injector from the affected cylinder and visually inspect the injector O-ring seals for damage.
If leakage is found and the O-rings are in good repair, there may be a problem with the injector. Replace the injector. Ensure that the new trim files are installed. Refer to Troubleshooting, "Injector Trim File - Install" for details. Use Caterpillar Electronic Technician (ET) to perform a "Fuel System Verification Test". Refer to Troubleshooting, "Injector Solenoid - Test" for details.
If the leakage is not located, add the appropriate dye to the fuel tanks. Run the engine at high idle for several minutes. Shut down the engine and remove the valve covers. Use a black light to check for traces of dye around each injector.
O-ring Seal
Result: The injector O-ring seal is damaged.
Repair: Replace the damaged seals. Install the injector onto the engine and confirm that the repair has resolved the problem.
Result: The injector O-ring seal is not damaged.
Proceed to Test Step 2.
2. Fuel Injector Tip
A. Use Cat ET to perform the "Cylinder Cutout Test" in order to identify any cylinders that may be overfueled.
B. A fuel injector tip that is broken or fractured is a possible cause of a cylinder that is being overfueled. If a cylinder is identified by the test, Remove the injector and check the injector tip for damage. Check the fuel injector tip for cracks or breakage.
Injector Tip
Result: The fuel injector tip is damaged.
Repair: Replace the suspect injector.
Result: The fuel injector tip is not damaged.
Proceed to Test Step 3.
3. Fuel Transfer Pump Seal
A. Check for fuel leakage around the shaft seal for the fuel transfer pump. Ensure that the weep hole is not plugged.
Pump Seal
Result: There is fuel leakage around the shaft seal.
Repair: Replace the fuel transfer pump.
Result There is not fuel leakage around the shaft seal.
Proceed to Test Step 4.
4. High-pressure fuel pump
A. Remove the plug from the bottom of the high-pressure fuel pump. Remove the plug from the bottom of the fuel pump adapter. Expect that a small amount of engine oil will drain from the openings.
B. Use the manual override for the fuel priming pump to run the pump in order to pressurize the fuel system. Allow the pump to run for at least 5 minutes while you monitor the drain holes in the pump and the adapter for leakage.
Defective Pump
Result A leak is detected.
Repair: Replace the high-pressure fuel pump.
Result No leak is detected.
Proceed to Test Step 5.
5. Cracked Cylinder Head
A. Look for signs of damage to the internal passages for the fuel supply to the injectors in the cylinder head. Check for pin hole leaks. Refer to Disassembly and Assembly.
Cracked Head
Result The internal passages for the fuel supply to the injectors are damaged.
Repair: Repair or replace the cylinder head.
Fuel injector O-ring seals
Fuel injector tip
Fuel transfer pump seal
High-pressure fuel pump
Cracked cylinder headRecommended Actions
Complete the procedure in the order in which the steps are listed.
Table 1
Troubleshooting Test Steps Values Results
1. Leaking Seals
A. Remove the injector from the affected cylinder and visually inspect the injector O-ring seals for damage.
If leakage is found and the O-rings are in good repair, there may be a problem with the injector. Replace the injector. Ensure that the new trim files are installed. Refer to Troubleshooting, "Injector Trim File - Install" for details. Use Caterpillar Electronic Technician (ET) to perform a "Fuel System Verification Test". Refer to Troubleshooting, "Injector Solenoid - Test" for details.
If the leakage is not located, add the appropriate dye to the fuel tanks. Run the engine at high idle for several minutes. Shut down the engine and remove the valve covers. Use a black light to check for traces of dye around each injector.
O-ring Seal
Result: The injector O-ring seal is damaged.
Repair: Replace the damaged seals. Install the injector onto the engine and confirm that the repair has resolved the problem.
Result: The injector O-ring seal is not damaged.
Proceed to Test Step 2.
2. Fuel Injector Tip
A. Use Cat ET to perform the "Cylinder Cutout Test" in order to identify any cylinders that may be overfueled.
B. A fuel injector tip that is broken or fractured is a possible cause of a cylinder that is being overfueled. If a cylinder is identified by the test, Remove the injector and check the injector tip for damage. Check the fuel injector tip for cracks or breakage.
Injector Tip
Result: The fuel injector tip is damaged.
Repair: Replace the suspect injector.
Result: The fuel injector tip is not damaged.
Proceed to Test Step 3.
3. Fuel Transfer Pump Seal
A. Check for fuel leakage around the shaft seal for the fuel transfer pump. Ensure that the weep hole is not plugged.
Pump Seal
Result: There is fuel leakage around the shaft seal.
Repair: Replace the fuel transfer pump.
Result There is not fuel leakage around the shaft seal.
Proceed to Test Step 4.
4. High-pressure fuel pump
A. Remove the plug from the bottom of the high-pressure fuel pump. Remove the plug from the bottom of the fuel pump adapter. Expect that a small amount of engine oil will drain from the openings.
B. Use the manual override for the fuel priming pump to run the pump in order to pressurize the fuel system. Allow the pump to run for at least 5 minutes while you monitor the drain holes in the pump and the adapter for leakage.
Defective Pump
Result A leak is detected.
Repair: Replace the high-pressure fuel pump.
Result No leak is detected.
Proceed to Test Step 5.
5. Cracked Cylinder Head
A. Look for signs of damage to the internal passages for the fuel supply to the injectors in the cylinder head. Check for pin hole leaks. Refer to Disassembly and Assembly.
Cracked Head
Result The internal passages for the fuel supply to the injectors are damaged.
Repair: Repair or replace the cylinder head.
Parts carburetor Tohatsu:
3D5-03100-5
314S02411-1
3F0-03100-4
3F0S02411-2