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Jet Drive Debris Removal Procedure

1. If debris or rocks are ingested into the suction side of the jet, damage may occur.

Symptoms of debris entry may be:

    A. Over heating
    B. Cavitation (aeration of jet drive)
    C. Poor performance
    D. Noisy jet drive

2. If rocks or debris are ingested into the jet drive:

    A. Decrease R.P.M.'S
    B. Drive boat to a safe place at partial throttle
    C. Shut off engine and remove ignition key
    D. Turn on bilge pump
    E. Remove clean out cover bolts
    F. Remove clean out cover
    NOTE: For certain pump models the clean out cover is inside the hull, so upon removal of cover water will begin to enter the bilge area. By intermittently replacing and removing the cover, the debris may be cleared and give the bilge pump time to catch up with the entry of water.
    G. After debris has been removed re-install cover and bolts
    H. Be sure there are no leaks around cover
    I. Check bilge for removal of water by the bilge pump
    J1. Restart engine
    J2. Check engine temperature
    J3. TRy throttling up normally and check performance

NOTE: After debris entry in shallow water always check “intake grate” for rocks sticking between the bars upon removal of boat from water, remove these rocks.

3. If excessive sand is ingested into the jet drive: symptoms of sand entry are

    A. Warning buzzer sound
    B. Immediate and excessive overheating

4. Open petcocks in exhaust manifolds to check for sand.

5. Remove exhaust manifold cooling hoses - check for sand.

6. Remove end caps on heat exchanger and flush.

7. Replace hoses and heat exchanger end caps.

8. Start engine amd check for jet water flow through exhaust manifolds and hoses.

NOTE: If debris or sand is still present in cooling system repeat steps.

Frequently Asked Questions

  • Trouble Shooting
    • High Water Temperature
    • Low Oil Pressure
    • Engine Will Not Turn Over
    • Engine Turns Off But Won't Start
    • Shifter Control Will Not Move
    • Steering Frozen
    • Fuel Gauge Not Working
    • Buzz Light Low Oil High Water Temperature
    • Engine Starts But Runs Rich
    • Engine Starts But Runs Rough
    • Engine Starts and Runs WIth Hesitation In Midrange
    • Engine Will Not Reach Top RPM
    • Volt Meter Reads Low Scale
    • Tachometer Reads Low Scale - Engine O.K.
    • Tachometer Sluggish or Inconsistent
    • Navigation Lights Don't Work
    • Bilge Blower Does Not Operate
  • Preparation
    • Education
    • U.S. Coast Guard Auxiliary
    • U.S. Power Squadron
    • Weather
    • Fueling
    • Boat Capacity
    • Boat Ramp Etiquette
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