SELVA MARINE Blue Whale 250 EFI, Service Manual

Page: 126 / 377

POWR
Power unit
5-13
6P23H11
6. Remove the timing belt, driven sprock-
ets, and camshafts.
NOTE:
To remove the timing belt, driven sprockets,
and camshafts, see
“ Removing the timing
belt, driven sprocket, and camshaft. ”
7. Remove the valve shim
2
from the valve
lifter
3
using compressed air.
NOTE:
Do not mix the valve train parts. Keep them
organized in their proper groups.
8. Measure the valve shim thickness using
a micrometer, and then note the mea-
surement data.
9. Select the necessary valve shim by cal-
culating its thickness using the following
formula.
Example:
If the
“ Removed valve shim thickness ” is 2.10
mm, the “ Measured valve clearance ” is 0.30
mm and the “ Specified valve clearance ” is
0.20 mm, then the “ Necessary valve shim
thickness ” = 2.10 + 0.30 – 0.20 = 2.20 mm.
10. Install the necessary valve shim into the
valve lifter.
11. Install the camshafts, driven sprockets,
and timing belt.
NOTE:
To install the camshafts, driven sprockets,
and timing belt, see
“ Installing the camshaft,
driven sprocket, and timing belt. ”
12. Install the stator assembly.
13. Install the Woodruff key and then fly-
wheel magnet.
NOTE:
• Apply engine oil to the thread of the fly-
wheel magnet nut and washer before
installation.
• Be sure to remove any grease from the
tapered portion of the crankshaft and the
flywheel magnet.
14. Check each valve clearance and adjust
again if out of specification.
15. Install the cylinder head covers.
Necessary valve shim thickness =
Removed valve shim thi
Measured valve clearance
– Specified
valve clearance
Flywheel holder: 90890-06522
T
R
.
.
Flywheel magnet nut:
240 N · m (24.0 kgf · m, 177.0 ft · lb)
Valve clearance (cold):
Intake:
0.20
±
0.03 mm (0.008
±
0.001 in)
Exhaust:
0.34
±
0.03 mm (0.013
±
0.001 in)