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1. Fuel Pump — Delivers gasoline fuel to the engine.
2. Oil Fill Cap — Remove the cap to add fresh engine
oil. Refer to the Inspection or Maintenance section
for more information.
3. Oil Dipstick — Remove to check the amount and
condition of oil in the crankcase.
4. Spark Plug — Provides spark to the ignition system.
Set the spark plug gap to 0.030 in. (0.76 mm).
5. Starter — Starts the engine when the ignition key is
rotated to the START position.
6. Oil Drain Plug — Remove to drain engine oil.
7. Blower Housing — Contains the air cooling system.
8. Muffler Mounting Bracket — Secures the muffler to
the trowel frame.
9. Air Cleaner — Prevents dirt and debris from entering
the engine cylinders.
LD6/LD6SL RIDE-ON POWER TROWEL • OPERATION MANUAL — REV. #6 (02/13/23) — PAGE 25
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Figure 11. Vanguard Engine Components
COMPONENTS (ENGINE)
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10. Muffler — Reduces noise and emissions. NEVER
touch the muffler while the engine is running.
11. Exhaust Pipe — Transports harmful exhaust gases
away from the engine interior.
12. Oil Cooler — Maintains engine oil temperature and
viscosity.
13. Engine Mounting Bracket — Secures the engine to
the trowel frame.
14. Oil Filter — Filters engine oil contaminants.
15. Hydraulic Pump — Variable displacement, axial piston
pump drives the motors that turn the blades.
16. Amplifier — Receives input from the rotor speed
control lever and sends proportional output current to
the hydraulic pump valve.
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