13-4
Chapter 13 ADJUSTMENT AND OPERATION
1.2 Valve Bridge and Adjusting Screw - Check
Check the adjustment of valve bridge and adjusting screw. If
it is not adjusted, adjust it to the standard value.
For the adjusting procedure, refer to "Valve Bridge and
Adjusting Screw - Adjust" of "ASSEMBLY OF BASIC
ENGINE."
1.3 Valve Clearance - Check
Check the valve clearance.
If it is not adjusted, adjust it to the standard value.
For the adjusting procedures, refer to "Valve Clearance -
Inspect and Adjust" of "ASSEMBLY OF BASIC ENGINE.
"
1.4 Fuel Injection Timing - Check
Check the fuel injection timing.
If it is not adjusted, adjust the timing to the specified value.
For the adjusting procedures, refer to "Fuel Iinjection Tim-
ing - Check and Adjust" of "ASSEMBLY OF BASIC
ENGINE. "
1.5 Fuel System - Bleed Air
To bleed air from fuel system, start air bleeding at the place
nearest to fuel tank, from fuel filter to injection pump, while
feeding fuel with priming pump.
Priming Pump - Operate
1.5.1 Fuel Filter (Paper Element) - Bleed Air
(1) Loosen the air vent plug of fuel filter by approx 1.5
turns.
(2) Feed fuel by moving the priming pump up and down.
(3) When fuel flowing from vent holes no longer contains
air bubbles, tighten the air vent plugs to the specified
torque.
Fuel Filter (Paper Element) - Bleed Air
(a) Thoroughly wipe off fuel spilled out of air vent plug
to prevent a fire.
(b) After air bleeding, ensure the lock of priming pump
cap. If locking is insufficient, it could cause dam-
age to the priming pump and result in fuel leak and
a fire.
"Unlock"
"Priming"
"Lock"
Turn
counterclockwise.
Move
up and down.
Turn clockwise
while pressing down.
"Unlock"
"Priming"
"Lock"
Turn
counterclockwise.
Move
up and down.
Turn clockwise
while pressing down.
"Unlock"
"Priming"
"Lock"
Turn
counterclockwise.
Move
up and down.
Turn clockwise
while pressing down.
If the air vent plugs, threads of bracket or sealing
washers are damaged, replace them with new ones.
Right side
filter
Left side
filter
Air vent plug
Position during
operation
A: Air vent location of left side filter
B: Air vent location of right side filter
Pin
Pin
Changeover cock
Changeover cock
A
B
9 ±1 N·m {0.9 ± 0.1 kgf·m}
[ 6.6 ± 0.7 lbf·ft]
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