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Troubleshooting

HIGH WATER TEMPERATURE

  • blockage in raw water feed hose from jet
  • sticky thermostat
  • defective heat exchange cap
  • low coolant
  • leak in cooling system or heater hose
  • possible cracked heads - lets coolant escape
  • into combusting chamber
  • restriction in hoses to exhaust manifold
  • heat exchange plugged with sand or debris

LOW OIL PRESSURE

  • low oil level
  • defective pressure sending unit - check pressure with manual gauge
  • defective oil gauge
  • low oil viscosity
  • leak in oil cooler lines or oil pan

ENGINE WILL NOT TURN OVER

  • low battery voltage
  • bad battery connection
  • corroded battery cables
  • defective solenoid
  • defective battery switch
  • defective starter
  • engine frozen (hydraulic) water on top of pistons
  • bearings in jet drive frozen
  • water in bowl of jet drive. water ring frozen to impeller
  • foreign part in teeth of starter of fly wheel

ENGINE TURNS OFF BUT WON'T START

  • no fuel to carb - check ball in fuel tank outlet
  • ignition: points frozen, not opening
  • points open but no spark - check ballast
  • resistor or coil wire or distributor cap
  • low battery voltage
  • worn spark plugs
  • water in distributor cap
  • distributor module defective

SHIFTER CONTROL WILL NOT MOVE

  • sand in between bucket and nozzle
  • bucket frozen in position
  • defective cable
  • defective control
  • cable not properly adjusted
  • pivot bolt missing or damaged

STEERING FROZEN

  • steering adaptor (jet end) contains ice and will not allow cable to move
  • defective cable
  • defective helm

FUEL GAUGE NOT WORKING

  • fuel sender not grounded
  • fuel tank sending wire not connected
  • defective sending unit wire (wire separated internally)
  • defective sending unit
  • defective gauge
  • no power to gauge

BUZZ LIGHT LOW OIL HIGH WATER TEMPERATURE

  • if buzz light sounds check gauges
  • if gauges read normal:
    possible defective buzz light sending units, oil and water temperature
    possible grounding of buzz light on steering helm

ENGINE STARTS BUT RUNS RICH

  • carburetor icing
  • floats in carburetor stuck
  • needle valve in carburetor plugged
  • choke too tight
  • choke not operating
  • secondary butterflies partly open on carburetor

ENGINE STARTS BUT RUNS ROUGH

  • carburetor problems
  • worn spark plugs
  • broken or cracked spark plugs
  • cracked distributor cap
  • corroded distributor cap terminals
  • bad spark plug wires
  • sticking advance weights in distributor
  • broken advance springs in distributor
  • disrobing cap not tightened down
  • incorrect air fuel adjustment
  • secondary butterflies partly open on carb
  • incorrect timing
  • water in fuel supply

ENGINE STARTS AND RUNS WITH HESITATION IN midrange

  • incorrectly adjusted accelerator pump
  • defective accelerator pump
  • defective spark plugs
  • distributor not giving correct advance

ENGINE WILL NOT REACH TOP RPM

  • needs tune up
  • carburetor is icing up
  • bad fuel
  • bad spark plugs
  • low compression

VOLT METER READS LOW SCALE

  • defective alternator
  • field wire not connected to alternator
  • heavy drain on charging system... example: multiple accessories being used
  • battery cables touching each other

TACHOMETER READS LOW SCALE - ENGINE O.K.

  • incorrect setting - set on #3 on back side of tachometer

TACHOMETER SLUGGISH OR INCONSISTENT

  • defective tach

NAVIGATION LIGHTS DON'T WORK

  • burned out bulbs
  • bad connection - in wiring
  • wire connector not on switch
  • defective switch

BILGE BLOWER DOES NOT OPERATE

  • needs fuse
  • metal shaving in pump pick up
  • hole in bilge hose
  • automatic switch defective
  • check wiring


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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