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Fig. 17
2. If necessary remove the crank from the cylinder
block. Mark the governor lever and the governor
crank to aid in reassembly. Remove the governor
lever from the crank (3). Remove the upper and
lower retaining rings (4) and the washer (5). Slide
the crank out of the bushings (7).
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3. Replace the oil seal (6, under the washer).
Replace worn or damaged components.
NOTE: Inspect the crank and the crank bushings. If
the bushings are damaged or worn replace
the cylinder block.
Install Governor Crank
1. Insert the governor crank through the crank
bushings and new seal. Install the washer and
lower retaining ring.
2. Install the upper retaining ring and the governor
lever. Align the marks on the governor lever and
the governor crank.
- Quick Links:
- Troubleshooting
- Fuel Systems and Carburetion
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Troubleshooting
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Do you have a question about the OHV V-Twin and is the answer not in the manual?
Questions and answers
vanguard 18 HP Twin is running too rich and manual poorly illustrated and described
To troubleshoot a Vanguard OHV V-Twin 18 HP engine running too rich, follow these steps:
1. Check Air Filter – A clogged air filter restricts airflow, causing a rich mixture. Clean or replace the air filter if necessary.
2. Inspect Carburetor – Ensure the carburetor is clean and free of debris. If needed, disassemble and clean it, replacing old gaskets and seals.
3. Examine Fuel Solenoid – The fuel shut-off solenoid controls fuel flow. Ensure it is functioning correctly and not stuck open.
4. Check Main Jets – Remove and inspect the main jets for blockages or excessive wear that could alter fuel flow.
5. Verify Choke Operation – Ensure the choke control is properly adjusted and not stuck in a closed or partially closed position.
6. Monitor Oil Type – Using the correct oil viscosity helps maintain proper engine operation. Avoid multi-viscosity oils in high temperatures if they increase oil consumption.
7. Inspect Cooling System – Overheating can affect air-fuel mixture. Clean the cooling system to prevent airflow restrictions.
If the issue persists, further carburetor adjustments or professional servicing may be required.
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