Honda BF135A Manual page 370

15) Install the chain case on the cylinder block aligning the end
of the chain case at the crankcase side.
16) Loosely tighten the two 6 x 31 mm special bolts in the
positions shown.
17) Loosely tighten all the chain case bolts but the two 6 x 31
mm special bolts, and tighten them to the specified torque
in two or three steps in a criss-cross pattern. (Tighten the
three 10 x 43 mm flange bolts to the standard torque.)
TORQUE:
6 x 38 mm (SH) flange bolt (1)/
6 x 28 mm flange bolts (10)/
6 x 31 mm special bolts (2)/
6 x 25 mm flange bolts (3): 12 N . m (1.2 kgf . m, 9 lbf . ft)
STANDARD TORQUE:
10 x 43 mm flange bolts (3): 39 N . m (40 kgf . m, 29 lbf . ft)
NOTICE
• Do not touch the surfaces coated with the liquid gasket.
• Take care not to slide the chain case during installation as
it makes the thickness of the liquid gasket uneven.
• Take care not to let the chain case gasket and O-ring come
out of position.
9-16
[1]
10 x 43 (3)
6 x 38
(SH BOLT)
[3] CHAIN CASE
6 x 25 (3)
[3] CHAIN CASE
[4] CYLINDER BLOCK
6 x 28 (10)
[2]
6 x 31 mm
SPECIAL BOLTS
[5] CRANKCASE