Question about 2005 Suzuki DR-Z 250
Not sure what state of "togetherness" your motor is in but, there is an inspection bolt hole on the front side of the magneto cover. Take this bolt out together with the sparkplug and remove cylinder head cover. Turn engine till a timing mark appears in the centre of the inspection hole. The piston/crank will be at TDC (top dead centre) if magneto rotor is keyed on correctly. Do not set anything on engine other than at TDC. Magneto is tightened on to crankchaft end with a locating key, this covers your spark timing.
Valve timing is achieved via the cams, place camshafts into cups at TDC (all valves will be shut) and timing marks on camshaft sprockets will line up with line on cam cup journals in the head. Camchain is fed on from opposite side as chain tensioner to ensure timing remains when tensioned. Let me know if you are "all parts on the bench" or contemplating a stripdown, I can then clarify all necessary steps.
Posted on May 08, 2010
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Posted on Jan 02, 2017
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