Yamaha C40 Manual

							 
Trouble Recovery 
66
NOTE:
 
When the engine does not start with this pro- 
cedure, see page 66. 
EMU29670 
Engine fails to operate 
EMU29704 
Cold engine fails to start 
If the engine fails to start when it is cold, use
the following procedure.
WARNING
 
EWM00410  
When starting or operating the engine, do
not touch the ignition coil, spark plug
wire, spark plug cap, or other electrical
parts carrying high voltage. Keep loose
clothing and other objects away from the
engine when starting it. Do not touch the
flywheel or other moving parts when the 
engine is running. 
1. Adjust the trim angle so that the drive
shaft is at right angles to the water sur-
face or is trimmed in.
2. On models equipped with an emergency
starter valve, open it. The valve is locat-
ed behind the silencer cover on the front
of the engine.
3. Squeeze the primer pump two or three
times to feed fuel.4. Open the throttle slightly without shifting
using the throttle grip, neutral throttle le-
ver or free accelerator. It is necessary to
change the throttle opening slightly de-
pending on the engine temperature. Af-
ter the engine starts, return the throttle to
its original position.
5. Turn the main switch to “” (on).
ZMU03141
OPEN
CLOSE
ZMU03142
N
ZMU03143
ON START OFF
ZMU03144
✩✦✯✬✤✲✲✣ ✩✩ 	
 


 
						

							 
Trouble Recovery 
67 
6. Turn the main switch to “” (start).
CAUTION:
 
ECM00191  
 
Never turn the main switch to “”
(start) while the engine is running. 
 
Do not keep the starter motor turning
for more than 5 seconds. If the starter
motor is turned continuously for more
than 5 seconds, the battery will be
quickly discharged, thus making it im-
possible to start the engine. The starter
can also be damaged. If the engine will
not start after 5 seconds of cranking,
return the main switch to “” (on), wait
10 seconds, then crank the engine 
again. 
7. After the engine starts, close the emer-
gency starter valve (if used), then return
the throttle to its original position.
NOTE:
 
When the starter mechanism malfunctions, 
see page 64. 
EMU29760 
Treatment of submerged motor 
If the outboard motor is submerged, immedi-
ately take it to a Yamaha dealer. Otherwise
some corrosion may begin almost immedi-
ately.
If you cannot immediately take the outboard
motor to a Yamaha dealer, follow the proce-
dure below in order to minimize engine dam-
age. 
EMU29771 
Procedure 
1. Thoroughly wash away mud, salt, sea-
weed, and so on, with fresh water.
2. Remove the spark plugs and face the
spark plug holes downward to allow any
water, mud, or contaminants to drain.
ZMU03335 ON
STARTOFF
ZMU03145
OPEN
CLOSE
ZMU01909
ZMU01910
✩✦✯✬✤✲✲✣ ✩✪ 	
 


 
						

							 
69 
Consumer information 
EMU29811 
Important warranty information for U.S.A. and Canada✩✦✯✬✤✲✲✣ ✩✬ 	
 


 
						

							 
Consumer information 
70✩✦✯✬✤✲✲✣ ✪✣ 	
 


 
						

							 
Consumer information 
71 
EMU29820 
YAMAHA MOTOR CORPORATION, U.S.A.
 OUTBOARD MOTOR TWO YEAR LIMITED WARRANTY✩✦✯✬✤✲✲✣ ✪✤ 	
 


 
						

							 
Consumer information 
72✩✦✯✬✤✲✲✣ ✪✥ 	
 


 
						

							 
Consumer information 
73✩✦✯✬✤✲✲✣ ✪✦ 	
 


 
						

							 
Consumer information 
74 
EMU29841 
IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR 
YAMAHA OUTSIDE THE USA OR CANADA✩✦✯✬✤✲✲✣ ✪✧ 	
 


 
						

							Printed in Japan
May 2005–0.8 ×1 !Printed on raecycled paper
63B-9-1E Hyoshi  4/25/05 9:39 AM  Page 4