Honda CRF250R User Manual

Clutch System
(cont’d)
Servicing Your Honda 65
• Replace the clutch discs (1) if they show signs of
scoring or discoloration.
Measure the thickness of each clutch disc.
Service Limit: 0.112 in (2.85 mm)
Replace the clutch discs and clutch plates as a
set.
• Check the clutch plates (2) for excessive
warpage or discoloration.
Check the plate warpage on a surface plate using
a feeler gauge.
Service Limit: 0.004 in (0.10 mm)
Replace the clutch discs and clutch plates as a
set.
• If you feel the clutch slippage when replacing the
clutch discs and plates, replace the clutch
springs.
1. Install the spring seat (1) and judder spring (2)
onto the clutch center as shown.
Coat the clutch discs with engine oil.
2. Install the clutch disc A (larger I.D. disc) (3)
onto the clutch outer.
Stack the seven clutch plates (4) and seven
clutch discs B (5) alternately.
3. Apply engine oil to the needle bearing (6).
Install the needle bearing and washer (7) onto
the clutch lifter (8). Then, install a new clip (9)
by fitting it into the groove in the clutch lifter.
Clutch Disc/Plate Inspection
(1) clutch discs
(2) clutch plates
(1)
(2)
Clutch Disc/Plate Installation
(1) spring seat (4) clutch plates
(2) judder spring (5) clutch discs B
(3) clutch disc A
(5)
(1)
(2)
(3)
(4)
(6) needle bearing (8) clutch lifter
(7) washer (9) clip (new)
(7)
(9)
(6)
(8)

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)