Eton VIPER 70, Service Manual

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Stem-to-guide clearance IN 0.010 ~ 0.037 mm
(0.0004 ~ 0.0015 in) 0.08 mm
(0.0031 in)
EX 0.025 ~ 0.052 mm
(0.0010 ~ 0.0020 in) 0.10 mm
(0.0039 in)
Stem runout limit ---- 0.02 mm
(0.0008 in)
Valve seat width IN 0.9 ~ 1.1 mm
(0.0354 ~ 0.0433 in) 1.6 mm
(0.0630 in)
EX 0.9 ~ 1.1 mm
(0.0354 ~ 0.0433 in) 1.6 mm
(0.0630 in)
Valve spring
Free length IN 30.00 mm (1.18 in) 27.00 mm
(1.06 in)
EX 30.00 mm (1.18 in) 27.00 mm
(1.06 in)
Compressed pressure
(installed)
IN 39 ~ 48 N at 22.45 mm
(3.99 ~ 4.87 kg,
10.69 ~ 13.05 lb at 0.88 in) ----
EX 39 ~ 48 N at 22.45 mm
(3.99 ~ 4.87 kg,
10.69 ~ 13.05 lb at 0.88 in) ----
Tilt lim t IN
2.0°/1.1 mm
(2.0°/0.04 in)
EX
2.0°/1.1 mm
(2.0°/0.04 in)
Direction of winding
(top view)
IN Counterclockwise ----
EX Counterclockwise ----
Item Standard Limit
IN 33.50 mm (1.32 in) 30.50 mm
(1.20 in)
EX 33.50 mm (1.32in) 30.50 mm
(1.20 in)
Inner spring
Free length
Outer spring