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CHAIN OILER ADJUSTING SCREW AND OIL PASSAGE (SIDE VALVE ENGINE)

1. Chain oil passage in gear case cover.

2. Chain oiler adjusting washers.

3. Chain oiler adjusting screw.

raises the least doubt as to its getting ample lubrication, add one or two more .002" washers under head of chain oiler adjusting screw. A well lubricated chain not only has an oily surface, but is also clean and free of discoloration. If chain has a brownish hue, and rusty appearance at side and center plates, it is under-lubricated even though the surface may be oily.

Since the quantity of oil involved is ,very small, the opening through which oil bleeds to chain is regulated by adjusting screw to a very small orifice. Sediment and gummy matter accumulated in oil supply deposits in and around this orifice and gradually decreases the oil supplied to chain. In other words, a chain that has been lubricating perfectly the first 2000 miles may run short of oil the second 2000 miles. Therefore, even though inspection indicates chain is amply lubricated, it is advisable at intervals of approximately 2000 miles, to loosen the chain oiler adjusting screw, and back it up about two turns. Operate this way a few miles and then turn screw back down moderately tight against its adjusting washers. This procedure flushes away accumulated sediment and restores oil orifice to its original size.

The same result can be accomplished if compressed air is available, by completely removing screw and washers, flushing opening with gasoline and blowing out. When this procedure is followed, care must be taken not to lose any of the thin washers under screw head, otherwise when screw is installed, it will not have the same adjustment as it did before being removed.

2. Chain oiler adjusting washers.

3. Chain oiler adjusting screw.

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