Honda BF135A Manual page 406

5) Apply engine oil to the threads and the washer seat of the
ten 11 x 155 mm bolt-washers, and loosely tighten them on
the cylinder head assembly.
6) Tighten the 11 x 155 mm bolt-washers to the specified
torque in the numbered sequence in two or three steps.
After tightening to the specified torque, tighten each bolt in
the numbered sequence twice in increments of 90˚.
When a bolt is replaced with a new one, tighten
additionally to 98˚.
TORQUE:
Used bolt: 39 N . m (4.0 kgf . m, 29 lbf . ft) + 90˚ + 90˚
New bolt: 39 N . m (4.0 kgf . m, 29 lbf . ft) + 90˚ + 90˚ + 98˚
7) Install the following parts.
– Exhaust manifold (P. 5-155)
– Injector base (P. 5-139)
– Fuel line assembly (P. 5-140)
– Throttle body/intake manifold (P. 5-132)
– Camshaft/rocker arm (P. 10-34)
– Crankshaft pulley/cam chain (P. 9-11)
– Cylinder head cover (P. 10-40)
– L./R. side cover brackets (P. 4-30)
– Ignition coil/spark plug (P. 3-8)
– L./R. engine under covers (P. 4-14)
– Engine cover (P. 4-2)
10-33
[1]
11 x 155 mm
BOLT-WASHER (10)
⑨ ⑩
⑤ ⑥
① ②
④ ③
⑧ ⑦