Raider-Classic 150 (Oil-cooled&Internal Gearbox): Service Manual (single/ double-seat) EEC Version;3.0 Feb..2005
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3.8.3 Replacement
a) Heat the cylinder head to 100 – 150 ºC.
b) Tap the valve guide out with a valve guide remover or the similar
tool.
c) After tapping the valve guide, you need to trim it with a reamer.
d) Clean the cylinder head and eliminate the scraps generated while reaming.
3.9 Valve Seat
The relative position between the valve seat and the working surface of the valve is very
important for the valve to seal properly.
3.9.1 Width Measurement
a) Clean the carbon accumulation in the combustion chamber.
b) Measure the width of the valve seat with a vernier caliper.
When the abrasion causes the valve seat width uneven, too wide or too narrow, it will result in
bad contact between the valve and valve seat, and can’t seal tightly. At this time, it must be
reamed with a customized valve seat-grinding cutter.
Standard 1.0mm
Service Limit
1.8mm
The cylinder head must be wholly and quickly heated to the specific degree, and
can’t be heated partly; otherwise it'll cause the cylinder head distortion.
The temperature is very high, so two technicians are recommended.
Don’t damage the cylinder joint face.
The reamer can only be turned right; do not push in or
out directly
Summary of Contents for Raider-Classic 150
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