Introduction
This guide shows how to remove and replace the chain tensioner module in a Makita chainsaw.
Optional Tools:
- Chainsaw scrench
Tools
Parts
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            If the chainsaw has a chain and guide bar installed, follow the manufacturer's instructions and remove them before proceeding. 
 
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            Twist the tension screw clockwise until the slide bar stops at the right end. 
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            Remove the single 15.7 mm long T27 screw holding the chain tensioner assembly in place. 
 
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            Slide the shaped plastic bearing onto the end of the assembly. 
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            Lightly lubricate all moving surfaces. 
 
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            Line up the tensioning assembly with its recess in the chainsaw and push it into the recess. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.