PERIODIC MAINTENANCE AND MINOR REPAIR
6
ZAUM0370
EAU01777
Removing and installing the
panel
The panel shown above needs to be
removed to perform some of the main-
tenance jobs described in this chapter.
Refer to this section each time the pa-
nel needs to be removed and installed.
1
ZAUM0369
1. Panel A
EAU01651
Checking the spark plug
The spark plug is an important engine
component, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
it should be removed and checked in
accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can
reveal the condition of the engine.
The porcelain insulator around the
center electrode of the spark plug
should be a medium-to-light tan (the
ideal color when the scooter is ridden
normally). If the spark plug shows a
distinctly different color, the engine
could be defective. Do not attempt to
diagnose such problems yourself.
Instead, have a Yamaha dealer check
the scooter.
6-5
EAUM0095
Panel A
To remove the panel
1. Open the seat. (See page 3-8 for
seat opening and closing
procedures.)
2. Remove the panel by pulling it up
as shown.
To install the panel
1. Insert the rear of the panel in the
original position, and then push
the front of the panel inward..
2. Close the seat.
Summary of Contents for why YH50
Page 1: ...OWNER S MANUAL 5XS F8199 E0 YH50 ...
Page 2: ......
Page 8: ......
Page 12: ......
Page 13: ...Left view 2 1 Right view 2 2 2 EAU01161 DESCRIPTION ...
Page 16: ......
Page 27: ...EAU01114 PRE OPERATION CHECKS Pre operation check list 4 1 4 ...
Page 30: ......
Page 36: ......
Page 61: ...EAU03434 SCOOTER CARE AND STORAGE Care 7 1 Storage 7 3 7 ...
Page 66: ......
Page 67: ...EAU01038 SPECIFICATIONS Specifications 8 1 Conversion table 8 4 8 ...
Page 72: ......
Page 77: ......
Page 78: ......
Page 79: ......
Page 80: ... E PRINTED IN FRANCE 2003 01 YAMAHA MOTOR CO LTD ...