Yamaha 115 C Service Manual

EMK00010
Chapter 4
MAINTENANCE
SPECIFICATIONS.....................................4-1
TRANSPORTING AND STORING
OUTBOARD MOTOR...............................4-3
Trailering outboard motor...................4-3
Storing outboard motor ......................4-4
PERIODIC MAINTENANCE......................4-8
Replacement parts ...............................4-8
Maintenance chart................................4-9
Cleaning and adjusting spark plug ...4-10
Checking top cowling ........................4-11
Checking...

4-1
E
EMK10010SPECIFICATIONS
9Fuel
Fuel tank capacity L (US gal, Imp gal)
9Recommended engine oil
Lubrication 
Engine oil capacity (engine oil tank) L (US qt, Imp qt)
(remote oil tank)
9Recommended gearcase oil
Gear oil capacity cm
3(US oz, Imp oz)
9Spark plug N•m (kgf•m, lb•ft)
9Propeller nut N•m (kgf•m, lb•ft) TIGHTENING TORQUE
25 (2.5, 18)
55 (5.5, 40)
Model
Unit 115TRC
Item
DIMENSIONS
PERFORMANCE 9Overall Length mm (in.)
9Overall Height L/X mm (in.)
9Overall Width mm (in.)
9Transom height L/X mm...

4-2
E
808 (31.8)
1,472 (58.0)/1,599 (22.9)
582 (22.9)
516 (20.3)/642 (25.3)
163 (359)/167 (368)
5,000~6,000
95.6 (130) at 5,500 r/min
700~800
2-stroke, 90°V
4
1,730 (105.6)
90.0 ×68.0 (3.54 ×2.68)
C.D.I system
BR9HS-10
0.9~1.0 (0.035~0.039)
Remote control
Electric start
380
502
124
12-20
Choke valve start system
Regular unleaded gasoline (P.O.N.:
minimum 86)
–
YAMALUBE 2 STROKE OUTBOARD OIL oran equivalent TC-W3 certified outboard oiloil injection system
0.9 (0.95, 0.79)
10.5 (11.1, 9.2)
Hypoid gear oil...

E
4-3
EMU01369*
TRANSPORTING AND
STORING OUTBOARD MOTOR
w
Leaking fuel is a fire hazard. When trans-
porting and storing the outboard motor,
close the air vent screw and fuel cock to
prevent fuel from leaking.
TRAILERING OUTBOARD MOTOR
The motor should be trailered and stored in
the normal running position. If there is insuf-
ficient road clearance in this position, then
trailer the motor in the tilt position using a
motor support device such as a transom
saver bar.
cC
Do not use the tilt support...

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4-4
EMU01796*
STORING OUTBOARD MOTOR
When storing your Yamaha outboard
motor for prolonged periods of time (2
months or longer), several important pro-
cedures must be performed to prevent
excessive damage. This is especially
important for your oil injection-equipped
outboard motor due to the lean oil ratios
used at idle prior to shutting the engine
off for the season. It is advisable to have
your outboard motor serviced by an
authorized Yamaha dealer prior to stor-
age. However, the following...

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4-5
Flushing Cooling System and Fogging
Engine
Cooling system flushing is essential to pre-
vent the cooling system from clogging up
with salt, sand, or dirt. In addition, fogging
of the engine is mandatory to prevent
expensive engine damage due to rust. Per-
form the flushing and fogging at the same
time.
1) Remove the top cowling and silencer
cover. Remove the propeller.
2) Install a flushing attachment to the lower
unit. (Flushing attachment available
from your Yamaha dealer).
cC
Avoid running the...

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4-6
EMK26110*
Lubrication
1) Remove the spark plugs, and spray a 10
second  spray of Yamaha Stor-Rite
Engine Fogging Oil into each cylinder.
Grease the spark plug threads and rein-
stall the spark plugs and torque to prop-
er specification.
(Refer to the Periodic Cleaning and
Inspection section, “Cleanning and
adjusting spark plug.”).
2) Turn the engine over with the stop lan-
yard disconnected to work the fogging
oil into the piston rings.
3) Fill the oil tanks. This prevents the for-
mation of...

E
4-7
EMK28010*
Battery Care
w
Battery electrolyte is poisonous and
dangerous, causing severe burns, etc. It
contains sulfuric acid. Avoid contact
with skin, eyes, or clothing.
Antidote:
EXTERNAL; Flush with water.
INTERNAL; Drink large quantities of
water or milk. Follow with milk of magne-
sia, beaten egg, or vegetable oil. Call
physician immediately.
EYES; Flush with water for 15 minutes
and get prompt medical attention.
Batteries produce explosive gases: Keep
sparks, flame, cigarettes, etc. away....

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4-8
EMU01569
PERIODIC MAINTENANCE
w
Be sure to turn off the engine when you
perform maintenance unless otherwise
specified. If the owner is not familiar with
machine servicing, this work should be
done by a Yamaha dealer or other quali-
fied mechanic.
Maintenance, replacement, or repair of
the emission control devices and systems
may be performed by any marine engine
repair establishment or individual. All
warranty repairs, however, including
those to the emission control system,
must be performed by...

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4-9
EMU19470
MAINTENANCE CHART
Frequency of maintenance operations may be adjusted according to the operating con-
ditions, but the following table gives general guidelines. Refer to the sections in this
chapter for explanations of each owner-specific action.
The mark (
) indicates the check-ups which you may carry out yourself.
The mark (1) indicates work to be carried out by your Yamaha dealer.
NOTE:
When operating in salt water, turbid or muddy water, the engine should be flushed
with clean water...