Honda CRF250R User Manual

Piston/Piston Rings/Piston Pin
(cont’d)
Servicing Your Honda 85
8. Install the left cylinder head hanger plate (10)
and right cylinder head hanger plate (11), then
loosely install the cylinder head hanger plate
bolts (12) and cylinder head hanger bolts (13).
Tighten the cylinder head hanger bolts and
cylinder head hanger plate bolts to the
specified torque:
cylinder head hanger bolts:
40 lbf·ft (54 N·m, 5.5 kgf·m)
cylinder head hanger plate bolts:
24 lbf·ft (32 N·m, 3.3 kgf·m)
9. Install the throttle body (14) to the insulator
(15) by aligning the tab of the throttle body
with the groove of the insulator and tighten the
insulator band screw (16) so the distance
between the band ends is 0.43 ± 0.04 in (11.0
± 1.0 mm).
10. Set the rear shock absorber (17) and install the
rear shock absorber upper bolt (18) and nut
(19) as shown.
Tighten the rear shock absorber upper nut to
the specified torque:
32 lbf·ft (44 N·m, 4.5 kgf·m)
11. Install the air cleaner connecting tube (20)
along with air cleaner case to the throttle body.
Tighten the air cleaner connecting tube band
screw (21) so the distance between the band
ends is 0.2 – 0.4 in (6 – 9 mm).
(10) left cylinder head hanger plate
(11) right cylinder head hanger plate
(12) cylinder head hanger plate bolts
(13) cylinder head hanger bolts
(12)
(13)
(10)
Left side:
(11)
(12)
(13)
Right side:
(14) throttle body (16) insulator band screw
(15) insulator
(17) rear shock absorber (19) nut
(18) rear shock absorber upper bolt
(14)
(15)
(16)
0.43 ± 0.04 in
(11.0 ± 1.0 mm)
(18)
(17)
(19)
(20) air cleaner connecting tube
(21) air cleaner connecting tube band screw
(20)
(21)
0.2 – 0.4 in
(6 – 9 mm)

Honda CRF250R Specifications

General

Engine Type	Liquid-cooled single-cylinder four-stroke
Displacement	249cc
Bore x Stroke	79.0mm x 50.9mm
Compression Ratio	13.9:1
Starter	Electric
Transmission	Close-ratio 5-speed
Final Drive	Chain
Front Brake	Single 260mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	100/90-19
Wheelbase	58.3 inches
Seat Height	37.8 inches
Ground Clearance	13.1 inches
Fuel Capacity	1.7 gallons
Valve Train	Unicam OHC, four-valve
Induction	Programmed Fuel Injection (PGM-FI)
Throttle Bore	44mm
Ignition	Full transistorized ignition
Front Suspension	49mm inverted Showa coil-spring fork with rebound and compression damping adjustability; 12.2 inches travel
Rear Suspension	Pro-Link Showa single shock with adjustable spring preload, rebound and compression damping; 12.4 inches travel
Rake	27.2°
Trail	115mm (4.5 inches)