5-35-2
EMERGENCY
PROCEDURES
TOWING THE SPORT BOAT
➀
Bow eye
The Sport Boat should be towed only if
it becomes inoperative.
The towing rope should be long
enough so that the Sport Boat will not
collide with the towing boat when slow-
ing down. A good rule of thumb is a tow
rope which is three times the combined
length of the towing boat and the Sport
Boat.
Tow the Sport Boat using the bow eye
only. Tow the boat at a “no wake”
speed.
Do not tow the Sport Boat at speed
fast enough to leave a wake. Severe
engine damage could result
because water can flood the non-
operating engines through the cool-
ing water intake.
The operator of the towing boat
must keep speed to a minimum and
avoid traffic or obstacles which
could be a hazard to the driver on
the Sport Boat.
RUNNING ON ONE ENGINE
If one engine becomes inoperative, the
properly running engine can be used to
return to shore. Operate at a “no wake”
speed to prevent water from flooding
the non-operating engine through the
cooling water intake.
Do not operate the Sport Boat above
a “no wake” speed with just one
engine. Severe engine damage
could result because water can
flood the non-operating engines
through the cooling water intake.
TROUBLESHOOTING & SPECIAL PROCEDURES 5
TROUBLE POSSIBLE CAUSE REMEDY Page
Engine runs
• Fuel
Empty • Refill as soon as possible 3-3
irregularly or Stale or • Have serviced at
stalls contaminated Yamaha dealer
Oil and gasoline • Have serviced at
mixture is too rich Yamaha dealer
• Choke Knob is left pulled • Push it in fully 2-8
• Fuel filter
Water or dust • Have serviced at
collected Yamaha dealer
• Spark plug
Fouled or defective • Replace 4-7
Incorrect heat range • Replace 4-7
Gap incorrect • Adjust 4-7
• Spark plug cap
Loose • Fit properly 4-7
Loose electrical
• Tighten or connect properly
4-7
connections
Cracked, torn or
• Replace
damaged
• Carburetor
Incorrect idle
• Adjust 4-13
Adjustment
Clogged
• Have service at
Yamaha dealer
Engine won't run
• Engine
Jet intake clogged • Clean 5-5
over 3,500 rpm
overheat** Cooling system
• Clean 4-2
clogged
Sport Boat speed • Cavitation Jet intake clogged • Clean 5-5
too slow or
• Engine
Jet intake clogged • Clean 5-5
loses power
overheat**
Cooling system
• Clean 4-2
clogged
• Fuel Filter Clogged
• Have serviced at
Yamaha dealer
• Spark plug
Fouled or defective • Replace 4-7
Incorrect heat range • Replace 4-7
Gap incorrect • Adjust 4-7
• Spark plug caps Loose • Fit properly 4-7
• Fuel
Stale or • Have serviced at
contaminated Yamaha dealer
** Engine speed will be limited to 3,500 rpm by the overheat warning device.
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