OS Guide to four stroke engines booklet
- Source: eBay
Up for no reserve auction is this vintage OS Guide to four stroke engines booklet. Step by step instructions to rebuild your four stroker, set valves, change bearings, re-install camshafts and timing, etc. Covers the OS .48 and touches on the OS 1.60- 3.00 twins too. Thanks for looking and please check my other items.