Honda CR250R Owner's Manual & Competition Handbook page 59

Cylinder System
Cylinder Head Installation
1. Clean the cylinder head mating surface and
install the dowel pins (1).
2. Install the new cylinder head gasket (2) with
its "UP" mark (3) facing up and locating tab
(4) facing rearward.
(1)
(3) (4)
(1) dowel pins (3) "UP" mark
(2) cylinder head gasket (4) tab
3. Install the cylinder head (5) and tighten the
cylinder head nuts A (6) and cylinder head
nuts B/washers (7) to the specified torque in a
crisscross pattern in 2 or 3 steps:
20 lbf·ft (27 N·m, 2.8 kgf·m)
(7)
(5)
(5) cylinder head (7) cylinder head nuts B/
(6) cylinder head nuts A washers
54
Servicing Your Honda
4. Install the clamp (8), hanger plates (9) and
tighten the nuts (10) to the specified torque:
Engine side: 40 lbf·ft (54 N·m, 5.5 kgf·m)
Frame side: 25 lbf·ft (34 N·m, 3.5 kgf·m)
5. Connect the water hose (11) to the cylinder
head.
6. Install the spark plug and spark plug cap (12).
(12)
(11)
(2)
(8) clamp
(9) hanger plates
(10) nuts
7. Pour the recommended coolant mixture into
the radiator up to the correct level (page 38).
8. Install the fuel tank and seat (page 29, 30).
9. Start the engine and check for the following:
– compression leaks
– abnormal engine noise
– secondary air leaks
– coolant leaks
(6)
(10)
(8)
(9)
(11) water hose
(12) spark plug cap