PROCEDURE
PRECAUTION
Note
After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
REMOVE FRONT WHEEL RH
REMOVE NO. 1 ENGINE UNDER COVER (for Half Cover Type)
REMOVE NO. 1 ENGINE UNDER COVER (for Full Cover Type)
REMOVE REAR ENGINE UNDER COVER RH
REMOVE NO. 1 ENGINE COVER (w/ No. 1 Engine Cover)
REMOVE VACUUM PUMP ASSEMBLY
REMOVE AIR CLEANER CAP SUB-ASSEMBLY
DISCONNECT NO. 1 FUEL HOSE SUB-ASSEMBLY
Slide the hose clip and disconnect the No. 1 fuel hose sub-assembly from the No. 2 nozzle leakage pipe.
DISCONNECT NOZZLE LEAKAGE PIPE ASSEMBLY
Slide the hose clip and disconnect the nozzle leakage pipe assembly from the No. 2 nozzle leakage pipe.
Disengage the clamp to separate the nozzle leakage pipe assembly from the hose clamp.
REMOVE NO. 2 NOZZLE LEAKAGE PIPE
REMOVE NO. 1 WIRING HARNESS HEAT INSULATOR
REMOVE WIRING HARNESS CLAMP BRACKET
REMOVE DIFFERENTIAL PRESSURE SENSOR ASSEMBLY
REMOVE NO. 2 ENGINE COVER BRACKET
REMOVE SENSOR BRACKET
SEPARATE ENGINE WIRE (for LHD)
Disconnect the 6 connectors shown in the illustration.
Separate the harness bracket from the stud bolt.
Disengage the 2 clamps and separate the engine wire.
SEPARATE ENGINE WIRE (for RHD)
Disconnect the 6 connectors shown in the illustration.
Separate the harness bracket from the stud bolt.
Disengage the clamp and separate the engine wire.
REMOVE HARNESS BRACKET (for LHD)
Disconnect the vacuum hose from the harness bracket.
Remove the 2 bolts and 2 harness brackets from the cylinder head cover sub-assembly.
REMOVE HARNESS BRACKET (for RHD)
Disconnect the vacuum hose from the harness bracket.
Remove the bolt and harness bracket from the cylinder head cover sub-assembly.
REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY
CHECK VALVE CLEARANCE
Set the No. 1 cylinder to TDC/Compression.
| *a | Timing Mark |
| *b | Timing Pointer |
| *c | Groove |
Turn the crankshaft damper sub-assembly until the groove of the crankshaft damper sub-assembly and TDC mark of the timing chain cover sub-assembly are aligned.
Check that the timing mark of the camshaft timing sprocket is in the position shown in the illustration.
Tech Tips
If not, turn the crankshaft damper sub-assembly 1 revolution (360°) to align the timing mark of the camshaft timing sprocket as above.
Check the valve clearance of the No. 1 cylinder exhaust valve and No. 2 cylinder intake valve.
| *1 | Camshaft |
| *2 | No. 1 Valve Rocker Arm Sub-assembly |
| *a | View (A) |
| *b | No. 1 Cylinder Exhaust Valve |
| *c | No. 2 Cylinder Intake Valve |
| *d | Feeler Gauge |
| *e | Correct |
| *f | Incorrect |
Using a feeler gauge, measure the clearance between the camshaft and No. 1 valve rocker arm sub-assembly as shown in the illustration.
| Standard Valve Clearance (cold) |
|---|
| Intake |
| 0.11 to 0.17 mm (0.00433 to 0.00669 in.) |
| Exhaust |
| 0.14 to 0.20 mm (0.00551 to 0.00787 in.) |
Note
Center the feeler gauge with the roller and insert it parallel to the No. 1 valve rocker arm sub-assembly.
Do not apply excessive force to the valve adjusting screw with adjusting tools when measuring or adjusting.
Tech Tips
If the clearance is not as specified, record the measurements, and then adjust the valve clearance.
Check the valve clearance of the No. 1 cylinder intake valve and No. 3 cylinder exhaust valve.
Turn the crankshaft damper sub-assembly by a further 180° clockwise.
| *1 | Camshaft |
| *2 | No. 1 Valve Rocker Arm Sub-assembly |
| *a | View (A) |
| *b | No. 1 Cylinder Intake Valve |
| *c | No. 3 Cylinder Exhaust Valve |
| *d | Feeler Gauge |
| *e | Correct |
| *f | Incorrect |
Using a feeler gauge, measure the clearance between the camshaft and No. 1 valve rocker arm sub-assembly as shown in the illustration.
| Standard Valve Clearance (cold) |
|---|
| Intake |
| 0.11 to 0.17 mm (0.00433 to 0.00669 in.) |
| Exhaust |
| 0.14 to 0.20 mm (0.00551 to 0.00787 in.) |
Note
Center the feeler gauge with the roller and insert it parallel to the No. 1 valve rocker arm sub-assembly.
Do not apply excessive force to the valve adjusting screw with adjusting tools when measuring or adjusting.
Tech Tips
If the clearance is not as specified, record the measurements, and then adjust the valve clearance.
Check the valve clearance of the No. 3 cylinder intake valve and No. 4 cylinder exhaust valve.
Turn the crankshaft damper sub-assembly clockwise by a further 180°.
| *1 | Camshaft |
| *2 | No. 1 Valve Rocker Arm Sub-assembly |
| *a | View (A) |
| *b | No. 3 Cylinder Intake Valve |
| *c | No. 4 Cylinder Exhaust Valve |
| *d | Feeler Gauge |
| *e | Correct |
| *f | Incorrect |
Using a feeler gauge, measure the clearance between the camshaft and No. 1 valve rocker arm sub-assembly as shown in the illustration.
| Standard Valve Clearance (cold) |
|---|
| Intake |
| 0.11 to 0.17 mm (0.00433 to 0.00669 in.) |
| Exhaust |
| 0.14 to 0.20 mm (0.00551 to 0.00787 in.) |
Note
Center the feeler gauge with the roller and insert it parallel to the No. 1 valve rocker arm sub-assembly.
Do not apply excessive force to the valve adjusting screw with adjusting tools when measuring or adjusting.
Tech Tips
If the clearance is not as specified, record the measurements, and then adjust the valve clearance.
Check the valve clearance of the No. 2 cylinder exhaust valve and No. 4 cylinder intake valve.
Turn the crankshaft damper sub-assembly clockwise by a further 180°.
| *1 | Camshaft |
| *2 | No. 1 Valve Rocker Arm Sub-assembly |
| *a | View (A) |
| *b | No. 2 Cylinder Exhaust Valve |
| *c | No. 4 Cylinder Intake Valve |
| *d | Feeler Gauge |
| *e | Correct |
| *f | Incorrect |
Using a feeler gauge, measure the clearance between the camshaft and No. 1 valve rocker arm sub-assembly as shown in the illustration.
| Standard Valve Clearance (cold) |
|---|
| Intake |
| 0.11 to 0.17 mm (0.00433 to 0.00669 in.) |
| Exhaust |
| 0.14 to 0.20 mm (0.00551 to 0.00787 in.) |
Note
Center the feeler gauge with the roller and insert it parallel to the No. 1 valve rocker arm sub-assembly.
Do not apply excessive force to the valve adjusting screw with adjusting tools when measuring or adjusting.
Tech Tips
If the clearance is not as specified, record the measurements, and then adjust the valve clearance.
ADJUST VALVE CLEARANCE
| *1 | Valve Adjusting Screw |
| *2 | Valve Adjusting Nut |
Using SST and a screwdriver, loosen the valve adjusting nut while keeping the valve adjusting screw in position.
| *1 | Valve Adjusting Screw |
| *2 | Valve Adjusting Nut |
| *a | Feeler Gauge |
Adjust valve clearance (intake side).
Insert a feeler gauge (0.14 mm (0.00551 in.)) between the camshaft and No. 1 valve rocker arm sub-assembly, and turn the valve adjusting screw to adjust it.
| Valve Clearance (cold) |
|---|
| 0.14 mm (0.00551 in.) |
| *1 | Valve Adjusting Screw |
| *2 | Valve Adjusting Nut |
| *a | Fulcrum Length of Torque Wrench |
Using SST and a screwdriver, tighten the valve adjusting nut while keeping the valve adjusting screw in position.
Tech Tips
Calculate the torque wrench reading when changing the fulcrum length of the torque wrench.
When using SST (fulcrum length of 150 mm (5.91 in.)) + torque wrench (fulcrum length of 300 mm (11.81 in.)): 13.3 N*m (136 kgf*cm, 10 ft.*lbf).
Adjust the valve clearance (exhaust side).
| Valve Clearance (cold) |
|---|
| 0.17 mm (0.00669 in.) |
Tech Tips
Perform the same procedure as for the intake side valve clearance adjustment.
INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY
INSTALL HARNESS BRACKET (for LHD)
Install the 2 harness brackets to the cylinder head cover sub-assembly with the 2 bolts.
Connect the vacuum hose to the harness bracket.
INSTALL HARNESS BRACKET (for RHD)
Install the harness bracket to the cylinder head cover sub-assembly with the bolt.
Connect the vacuum hose to the harness bracket.
CONNECT ENGINE WIRE (for LHD)
Engage the 2 clamps to connect the engine wire.
Connect the harness bracket to the stud bolt.
Connect the 6 connectors.
CONNECT ENGINE WIRE (for RHD)
Engage the clamp to connect the engine wire.
Connect the harness bracket to the stud bolt.
Connect the 6 connectors.
INSTALL SENSOR BRACKET
INSTALL NO. 2 ENGINE COVER BRACKET
INSTALL DIFFERENTIAL PRESSURE SENSOR ASSEMBLY
INSTALL WIRING HARNESS CLAMP BRACKET
INSTALL NO. 1 WIRING HARNESS HEAT INSULATOR
INSTALL NO. 2 NOZZLE LEAKAGE PIPE
CONNECT NOZZLE LEAKAGE PIPE ASSEMBLY
Engage the clamp to connect the nozzle leakage pipe assembly to the hose clamp.
Connect the nozzle leakage pipe assembly to the No. 2 nozzle leakage pipe and slide the hose clip to secure it.
CONNECT NO. 1 FUEL HOSE SUB-ASSEMBLY
Connect the No. 1 fuel hose sub-assembly to the No. 2 nozzle leakage pipe and slide the hose clip to secure it.
INSTALL AIR CLEANER CAP SUB-ASSEMBLY
INSTALL VACUUM PUMP ASSEMBLY
INSTALL NO. 1 ENGINE COVER (w/ No. 1 Engine Cover)
INSTALL REAR ENGINE UNDER COVER RH
INSTALL NO. 1 ENGINE UNDER COVER (for Half Cover Type)
INSTALL NO. 1 ENGINE UNDER COVER (for Full Cover Type)
INSTALL FRONT WHEEL RH