Yamaha F150A, Service Manual

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7-3
Power unit (check and adjustment)
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A
10. Measure the intake and exhaust valve
clearances of the specified cylinders.
Adjust if out of specification. See “Adjust-
ing the valve clearance” (7-3).
—: Not applicable
✔
: Specified cylinder
11. Install a new gasket “1” and the cylinder
head cover “2”.
12. Install all of the spark plugs, and then
tighten them to the specified torque.
13. Install the blowby hoses “1” and “2”, and
then fasten the blowby hose “2” using the
clamp “3”.
14. Connect the spark plug wires “4”.
15. Install the canister. See “Installing the
canister” (6-19).
16. Install the fuel pump assemblies. See
“Installing the fuel pump assembly” (6-
15).
17. Connect the fuel hoses “1” and “2”, and
then fasten the fuel hoses “1” and “2”
using the plastic ties “3”.
Adjusting the valve clearance
Adjust the valve clearances when the engine
is cold.
• Do not turn the flywheel magnet coun-
terclockwise. Otherwise, the water pump
impeller could be damaged.
• Do not turn the flywheel magnet or the
driven sprockets when the timing belt is
not installed. Otherwise, the pistons and
valves, or intake and exhaust valves will
collide with each other and be damaged.
• Do not remove the ignition timing
pointer.
1. Remove the flywheel magnet. See
“Removing the flywheel magnet” (7-13).
2. Remove the stator assembly. See
“Removing the stator assembly” (7-13).
3. Remove the timing belt. See “Removing
the timing belt” (7-17).
#1 #2 #3 #4
IN — —
✔ ✔
EX —
✔
—
✔
Spark plug: 25 N·m (2.5 kgf·m, 18.4 ft·lb)
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