Yamaha WR250F 2022 User Manual

CRANKCASE
5-68
EAM30152
ASSEMBLING THE CRANKCASE
1. Install:
• Oil seal “1”
(to the left crankcase)
2. Install:
• Bearing cover plate
TIP
Install the bearing by pressing its outer race par-
allel.
3. Apply:
• Sealant
(to the crankcase mating surface)
4. Install:
• Oil nozzle “1”
• Dowel pin “2”
• Crankcase “3”
(to the left crankcase)
TIP
• Fit the right crankcase onto the left crankcase.
Tap lightly on the case with soft hammer.
• When installing the crankcase, the connecting
rod should be positioned at top dead center
(TDC).
• Tighten the bolts in a crisscross pattern in two
stages, with 1/4 turn each.
Installed depth “a”
4.5–5.0 mm (0.18–0.20 in)
Bearing cover plate
12 N·m (1.2 kgf·m, 8.9 lb·ft)
LOCTITE®
Bearing cover plate (crankshaft)
22 N·m (2.2 kgf·m, 16 lb·ft)
LOCTITE®
Yamaha bond No. 1215
90890-85505
Three bond No. 1215®
New
a
1
T
R
.
.
Oil nozzle bolt
5 N·m (0.5 kgf·m, 3.7 lb·ft)
LOCTITE®
Crankcase bolt
12 N·m (1.2 kgf·m, 8.9 lb·ft)
4. 45 mm (1.77 in)
5. 60 mm (2.36 in)
6. 75 mm (2.95 in)
T
R
.
.
T
R
.
.
5
6
4
5
4
4
4
2
3
1
2
LT
5
6
6

Yamaha WR250F 2022 Specifications

General

Bore x Stroke	77.0mm x 53.6mm
Compression Ratio	13.8:1
Ignition	TCI: Transistor Controlled Ignition
Final Drive	Chain
Suspension Rear	KYB® single shock; fully adjustable, 12.5-in travel
Length	85.6 in
Width	32.5 in
Height	50.0 in
Seat Height	38.2 in
Wheelbase	58.3 in
Rake (Caster Angle)	27.2°
Trail	4.6 in
Fuel Capacity	2.2 gal
Wet Weight	254 lb
Engine Type	Liquid-cooled, DOHC, 4-stroke
Fuel Delivery	Fuel injection
Suspension Front	KYB® Speed-Sensitive System inverted fork; fully adjustable
Brakes Front	Hydraulic single disc
Brakes Rear	Hydraulic single disc brake
Tires Front	80/100-21
Tires Rear	110/100-18