Damper Disc - Yanmar 3YM30 Sevice Manual

5. Inspection and servicing of basic engine parts

5.8.2 Damper disc

(1) Spline part
Whenever uneven wear and/or scratches are found,
replace with new one.
(2) Spring
Whenever uneven wear and/or scratches are found,
replace with new one.
(3) Pin wear
Whenever uneven wear and/or scratches are found,
replace with new one.
(4) Whenever a crack or damage to the spring
slot is found, replace the defective part with
new one.
Spline
133
Pin
Spring