Suzuki DF 150, DF 175 Engine Service Manual

The Suzuki DF 150 and DF 175 Engines are powerful and reliable marine powerplants. This manual covers a wide range of maintenance and repair procedures, including the removal, installation, and inspection of various components. You'll find comprehensive information on the timing chain, balancer chain, cylinder head, oil pump, and other essential parts. For users who need to solve technical problems, the manual helps to troubleshoot and resolve issues effectively. Be sure to properly maintain your engine to ensure its longevity and efficiency.

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Suzuki DF 150, 175 Engine Service Manual | Manualzz

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Key features

  • Reliable and fuel-efficient
  • Powerful and durable
  • Variety of innovative technologies
  • Suitable for small to medium size boats

Frequently asked questions

Disconnect battery cables from battery. Loosen the clamp securing breather hose 1, then remove the breather hose from cylinder head cover 2. Disconnect the intake air temp sensor lead wire connector 3 at intake air temp sensor. Remove the four (4) bolts securing ring gear cover 4. Remove the ring gear cover and intake silencer case.

Relieve fuel pressure. Disconnect battery cables from battery. Remove both side covers. Remove ring gear cover and air intake silencer case. Remove the three (3) bolts and fuel hose guard. Remove the two (2) bolts and front panel. Remove fuel vapor separator. Remove fuel injectors and fuel delivery pipe. Disconnect fuel outlet hose from low pressure fuel pump. Disconnect VSV (Vacuum Switching Valve) connector from VSV. Disconnect MAP sensor connector. Disconnect IAC valve connector. Disconnect TPS (Throttle Position Sensor) connector. Disconnect vacuum hoses from vacuum tank. Remove the two bolts securing throttle drum to intake manifold. Remove the throttle link connector from throttle drum. Disconnect water inlet hose from fuel cooler. Disconnect cooling water outlet hose from balancer water jacket cover. Disconnect water outlet hose and water return hose from water return union. Remove eight (8) bolts and two (2) nuts and then remove intake manifold assembly.

Disconnect battery cables from battery. Remove both side covers. To remove the cover 1, pull the upper part outward, then lift up. Remove the ring gear cover and air intake silencer case. Disconnect ignition coil connectors 2. Remove the bolts securing the ignition coils. Remove all ignition coils 3 and spark plugs. Disconnect inlet hose 4 and outlet hose 5 from low pressure fuel pump. Remove bolts and low pressure fuel pump 6. Remove the two bolts securing filter bracket 7, then remove low pressure fuel filter 8 and filter bracket. Disconnect IN. CMP sensor lead wire connector 9 at sensor. Remove bolt and IN. CMP sensor 0. Disconnect EX. CMP sensor lead wire connector A at sensor. Remove bolt and EX. CMP sensor B. Remove the bolt securing lead wire clamp plate C. Remove the two bolts securing lead wire clamp plate D. Disconnect OCV lead wire connector E at OCV. Remove the four (4) bolts securing OCV F, then remove OCV and discard OCV gasket. Remove the fourteen (14) bolts securing cylinder head cover G to the cylinder head, then remove the cylinder head cover.
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