Suzuki outboards: DF90 100 DF115 DF140 from 2001 to 2009 repair manual, Page 120Get this manual
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BRUSH SPRING Inspect brush spring for wear or other damageMeasure brush spring tensionReplace if necessaryBrush spring tension Standard1518 (1.51.8kg, 3.34.0 Ib
Page: 120
Suzuki DF9