Pro-Line Boats 21 DC, Owner'S Manual

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Trouble Shooting Chart
PROBLEM: POSSIBLE CAUSE:
Poor speed or fuel economy: *Wrong propeller for load or conditions.
*Trim is in to far.
*Load is to far forward or to heavy, or boat has taken on water.
*Marine growth on hull, Line or anchor dragging.
*Fuel is stale or partially blocked, engine is worn, out of tune or under
powered .
*Improper rigging, air intake or exhaust partially blocked.
Engine cranks but will not start:
*Out of fuel, filter is clogged, fuel line kinked, fuel vent plugged.
*Water in fuel.
*Engine problem, (electrical, fuel pump, blockage, etc.).
*Safety shut down switch lanyard not installed.
Engine will not crank:
*Drive is in gear (check operation of the throttle release).
*Battery is weak or terminals corroded or loose.
*Engine or drive damage.
Engine runs but boat wont go:
*Throttle release is engaged.
*Disconnected shift linkage.
*Damaged prop, or lower drive unit.
*Entangled in lines or weeds, or Anchor is down.
Prop cavitates:
*Trim out too far, motor to high.
*Weeds on prop.
*Bow heavy, damage to hull.
Excessive vibration:
*Propeller, engine, or drive unit damaged.
*Hull damage.
Boat won't turn:
*Steering unit needs fluid or has trapped air, tiller is Disconnected. (helm turns)
*Steering trunion or mechanism jammed, (helm won't turn).
Electrical problems
*Corroded wires, terminals, or plugs.
(see wiring diagram) *Broken, loose or short circuited wires.
*Circuit breaker tripped.
*Defective switch, device or breaker.
*Inline fuse burnt out.
*Overloaded circuit.
Handling problems like:
Porpoises *Trimmed out too far, damaged hull (rocker), trim tabs up, stern heavy.
Runs wet *Trimmed in too far, bow heavy, trim tabs down, overloaded for conditions.
Hard ride *Stern heavy, trimmed in too far, going to fast for conditions.
Lists *Loaded to one side, trim tabs set wrong, trimmed to far in, fuel tanks uneven.
Overbank in turn *Trimmed in too far, improperly located load, throttle advanced to far.
Catches in turns *Damaged hull (hook), stern heavy, trim tabs down.