Honda crf250r 2012 Owner's Manual page 90

2. Route the cam chain through the cylinder
head (3).
Install the cylinder head.
NOTICE
Do not damage mating surfaces when installing
the cylinder head.
3. Apply engine oil to the cylinder head stud bolt
threads.
Install the washers and cylinder head stud
bolts (4).
Tighten the cylinder head stud bolts in a
crisscross pattern in two or three steps to the
specified torque:
33 lbf·ft (45 N·m, 4.6 kgf·m)
NOTICE
Do not let the washers and nuts fall into the
crankcase.
(3) cylinder head
(4) cylinder head stud bolts/washers
4. Install the cylinder bolt (5) and cylinder head
bolts (6) and tighten them to the specified
torque:
7 lbf·ft (10 N·m, 1.0 kgf·m)
(5) cylinder bolt
(6) cylinder head bolts
(3)
(4)
Piston/Piston Rings/Piston Pin
5. Install the left cylinder head hanger plate (7)
and right cylinder head hanger plate (8), then
loosely install the cylinder head hanger plate
bolts (9) and cylinder head hanger bolts (10).
Tighten the cylinder head hanger bolts and
cylinder head hanger plate bolts to the
(6)
specified torque:
cylinder head hanger bolts:
40 lbf·ft (54 N·m, 5.5 kgf·m)
cylinder head hanger plate bolts:
24 lbf·ft (33 N·m, 3.4 kgf·m)
(5)
(7) left cylinder head hanger plate
(8) right cylinder head hanger plate
(9) cylinder head hanger plate bolts
(10) cylinder head hanger bolts
(9)
(7)
(10)
(9)
(8)
(10)
(cont'd)
83
Servicing Your Honda