The chain loader tool is a tool that holds the chain to the sprocket as it is being rolled in. It makes this a one man job, which can save alot of money especially when compared to using ones wife for help with this. Below is a cost breakdown of changing a chain both with and without a chain loader tool.

With cahin loader
Chain and gaskets $100.
Chain loader tool $65.
Total cost of job $165.00

Without Chain Loader
Chain and gaskets $100.
Chain loader tool $65.
New cylinder heads because wife dident do it right $1000.00
Divorce because you made the mistake of blaming her $400,000.00
Replacement 560SL, because the wife got yours in the divorce $15,000
Total cost of job $416,165.00

Now some have argued that the second option, although being more expensive IS WORTH IT.

John Roncallo