4-STROKE PISTON RING ASSEMBLY TIPS - Duncan …

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Current as of 6/26/2009 4-STROKE PISTON ring ASSEMBLY tips Please note, the following tips for ASSEMBLY and installing the rings on your 4-STROKE PISTON . Proper ring installation is mandatory to proper engine function. Failure to correctly install the rings will cause numerous problems. ring Order Installation: Installing the rings it is best to install them in the following order. First install the 3- piece oil ring , 2nd install the middle ring , 3rd install the top ring . Failure to install rings from bottom of PISTON up will cause problems. Follow more elaborate instructions listed below. Top ring : The top ring also referred to, as the compression ring must always be installed. This ring is usually lighter silver in color. Engine should NEVER be run without top ring .

Current as of 6/26/2009 Piston/Ring Installation into cylinder: For proper ring installation ring gaps for each of the 3 rings should be staggered every 120 degrees (Figure 5).

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