Cylinder Head LH

Liquid gasket: 

THREE BOND 1217G (Part No. K0877Y0100), THREE BOND 1217H or equivalent 

Liquid gasket applying diameter: 

3±1 mm (0.1181±0.0394 in) 

Fig 1: Liquid Gasket Applying Dimension To Both Sides Of Cylinder Head Gasket LH

Courtesy of SUBARU OF AMERICA, INC.

1. Clean the cylinder head bolt threads and apply sufficient engine oil to the washer and cylinder head bolts threads.
2. Mount the cylinder head LH onto the cylinder block LH, then tighten all bolts with a torque of 29 N.m (3.0 kgf-m, 21.4 ft-lb) in numerical order as shown in the figure.
   Fig 2: Cylinder Head LH Bolts Tightening Sequence

   Courtesy of SUBARU OF AMERICA, INC.
3. Tighten all cylinder head bolts further with a torque of 100 N.m (10.2 kgf-m, 73.8 ft-lb) in numerical order as shown in the figure.
   CAUTION: If the bolt makes stick-slip sound during tightening, repeat the procedure from step  1. In that case, the cylinder head gasket LH can be reused. But it is necessary to remove liquid gasket completely from cylinder block LH, cylinder head LH and cylinder head gasket LH and re-apply to them.
   Fig 3: Cylinder Head LH Bolts Tightening Sequence

   Courtesy of SUBARU OF AMERICA, INC.
4. Loosen all cylinder head bolts 180° in numerical order as shown in the figure, and then loosen all cylinder head bolts 180° further in numerical order as shown in the figure.
   Fig 4: Cylinder Head LH Bolts Loosening Sequence (180°)

   Courtesy of SUBARU OF AMERICA, INC.
5. Tighten all cylinder head bolts with a torque of 42 N.m (4.3 kgf-m, 31.0 ft-lb) in numerical order as shown in the figure.
   Fig 5: Cylinder Head LH Bolts Tightening Sequence

   Courtesy of SUBARU OF AMERICA, INC.
6. Using angle gauge, tighten all cylinder head bolts with specified angle in numerical order as shown in the figure.

   ST 499817100 ENGINE STAND

   Tightening angle: 

   80°±2° 

   Fig 6: Tightening Cylinder Head Bolts Using Angle Gauge

   Courtesy of SUBARU OF AMERICA, INC.
7. Using angle gauge, tighten the cylinder head bolts (2 places) with specified angle in numerical order as shown in the figure.

   ST 499817100 ENGINE STAND

   Tightening angle: 

   75°±2° 

   Fig 7: Tightening Cylinder Head Bolts Using Angle Gauge (2 Places)

   Courtesy of SUBARU OF AMERICA, INC.
8. Using angle gauge, tighten the cylinder head bolts (4 places) with specified angle in numerical order as shown in the figure.
   NOTE: After tightening, if the liquid gasket is squeezed out onto the seal surface of the chain cover, completely remove any squeezed-out liquid gasket.

   ST 499817100 ENGINE STAND

   Tightening angle: 

   30°±2° 

   Fig 8: Tightening Cylinder Head Bolts Using Angle Gauge (4 Places)

   Courtesy of SUBARU OF AMERICA, INC.