Baja WD250U Service Manual page 166

2) Measure
• Installing pressure of valve spring
If unqualified, replace the inner and outer
spring totally.
Inner spring When it is 30.5mm (1.2 in), the pressure
(intake/exhaust) 8.4~10.2kg(18.5~22.5 lbs)
Outer spring When it is 32.0mm (1.26 in), the pres-
(intake/exhaust) sure is 16.6~20.4kg (36.6~45.0lbs)
6. Seal check of valve
1) Installation of valve
Lubricate
• Valve rod part (1)
• Valve rod oil seal (2)
Install
• Valve spring seat (1) (lower part)
• Oil seal of valve rod (2)
• Valve (3)
• Inner spring (4) of valve
• Outer spring (5) of valve
• Spring cover (6) of valve
• Locking clip (7) of valve
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