Checking The By-Pass - APRILIA M192M Workshop Manual

ENGINE
3.3.3.

CHECKING THE BY-PASS

•
Check the free length of the spring.
Standard length: 54.2 mm.
•
Check that piston is free from scoring.
•
Make sure that piston can run smoothly along casing
and that sufficient sealing is ensured.
•
If necessary, remove foreign bodies or change the
faulty parts.
3 - 52
Engines M192M / M191M / M245M / M234M / M282M / M281M