Honda CRF250R User Manual

Servicing Your Honda 75
Valve Clearance
13. Install the condenser stay (22) and tighten the
condenser stay mounting bolts (23).
14. Rotate the camshaft by rotating the crankshaft
clockwise several times and make sure that the
piston is at TDC on the compression stroke
(page 68).
15. Measure the intake valve and exhaust valve
clearances by inserting a feeler gauge (24).
Valve Clearance:
1. Install the spark plug (page 67).
2. Coat a new O-ring (1) with engine oil and
install it onto the crankshaft hole cap (2).
Apply grease to the crankshaft hole cap
threads. Install and tighten the crankshaft hole
cap to the specified torque:
11 lbf·ft (15 N·m, 1.5 kgf·m)
(22) condenser stay
(23) condenser stay mounting bolts
IN: 0.005 ± 0.001 in (0.12 ± 0.03 mm)
EX: 0.008 ± 0.001 in (0.21 ± 0.03 mm)
(24) feeler gauge
(22)
(23)
(24)
(24)
Crankshaft Hole Cap Installation
(1) O-ring (new)
(2) crankshaft hole cap
(2)
(1)

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)