Inspection

INSPECTION

TIMING BELT





Replace the belt if any of the following conditions exist:
1. Hardening of rubber backing.
Back side should be glossy without resilience and leave no indent when pressed with fingernail.





2. Cracks on rubber back.
3. Cracks or peeling of canvas.
4. Cracks at bottom of ribs.
5. Cracks on belt sides.





6. Abnormal wear of belt sides. Normal wear is indicated if the sides are sharp as if cut by a knife. Abnormal wear is indicated if the sides are ragged.





7. Abnormal wear on teeth.
Initial stage:
Canvas worn (fluffy canvas fibers, rubbery texture gone, white discoloration, canvas texture indistinct)
Final stage:
Canvas worn, exposing rubber (tooth width reduced)
8. Missing tooth.

AUTO-TENSIONER





1. Check for oil leaks. If oil leaks are evident, replace the auto-tensioner.
2. Check the rod end for wear or damage and replace the auto-tensioner if necessary.
3. Measure the rod protrusion. If it is out of specification, replace the auto tensioner.
Standard value: 12 mm (0.5 inch)






4. Press the rod with a force of 98 to 196 N (22 to 44 lb) and measure the movement of the rod.
If the measured value is out of the standard value, replace the auto-tensioner.
Standard value: 1.0 mm (0.03 inch) or less


VALVE CLEARANCE ADJUSTMENT

Adjust the valve clearance as follows:

CAUTION:
Rotate the crankshaft clockwise at any time.





1. Rotate crankshaft clockwise and then align the timing mark on the camshaft sprocket with the timing mark on the rocker cover. (Place Number 1 cylinder on the top dead center of compression stroke.)
2. Remove the rocker cover.





3. Measure the valve clearances marked with arrows shown in the illustration.
A: When Number 1 cylinder is on the top dead center of compression stroke.
B: When Number 4 cylinder is on the top dead center of compression stroke.





4. Using a thickness gauge, adjust the clearance between the valve shaft end and the adjusting screw.
Standard value (in cold state):

Intake side: 0.11 mm (0.004 inch)
Exhaust side: 0.20 mm (0.008 inch)
NOTE:
After the engine assembly is installed on the vehicle, check the valve clearance again with the engine warmed up. Adjust if necessary.

5. Hold the adjusting screw with a screwdriver so it does not rotate, then tighten the lock nut.
6. Rotate the crankshaft one time clockwise and then align the timing mark with the timing mark on the crankshaft sprocket. (Place Number 4 cylinder on the top dead center of compression stroke.)
7. Adjust the valve clearance for the rest of the valves.
8. Install the rocker cover.