Checking The Valve Clearance - SELVA MARINE Wahoo 15 Service Manual

NOTE:
Because the Prime Start operates when the
engine is started, the engine idle speed will
be above specification. Therefore, measure
the oil pressure after the engine has been
warmed up.
3. Measure the oil pressure. Check the oil
pump and oil strainer, and for oil leakage
if out of specification.
Oil pressure (reference data):
400 kPa (4.0 kgf/cm
engine idle speed

Checking the valve clearance

NOTE:
Measure the valve clearances when the
engine is cold.
1. Remove the sprocket cover and manual
starter. (Manual starter model)
Remove the sprocket cover and flywheel
magnet cover. (Electric starter model)
2. Disconnect the spark plug caps and
remove the spark plugs.
3. Remove the cooling water hoses 1, fuel
hoses 2, fuel pump 3, blowby hose 4,
and cylinder head cover 5.
4
5
1
3
4. Turn the flywheel magnet clockwise and
" mark a on the driven
align the "1
sprocket 6 with the " " mark b on the
cylinder head.
6AG3J11
2
, 58.0 psi) at
5
2
S6AG5035
Power unit (check and adjustment)
5. Measure the intake and exhaust valve
clearances for cylinder #1. Adjust if out of
specification.
#1
EX
#2
d
NOTE:
Note the measurement data.
Valve clearance:
Intake c:
0.15–0.25 mm (0.006–0.010 in)
Exhaust d:
0.25–0.35 mm (0.010–0.014 in)
6
1
a
2
b
3
S6AG5050
4
5
IN
6
c
7
S6AG5G10
8
9
5-2