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CLARIFICATIONS: Page 50, Oil Pump & Oil Pipe, Disassembly. This paragraph should have been written as: Do not disassemble this injection oil pump as it is a precision piece of equipment with no user serviceable/replaceable components inside. Disassembly/reassembly of the oil injection pump will void the warranty on the pump, the injection system and the engine. Should the oil injection pump fail in service, it should be replaced as a unit. A note about field experience with oil injection pumps: The pump is generally quite durable provided that grit/dirt is kept out of the injection oil and oil tank. The weakest part of the pump is the cam on the control shaft, shown as item ˇ in fig. 6-6 on page 45. Some shafts/cams are apparently made of softer material than one would expect and thus wear prematurely. Since the pump will actually pump more oil as the cam wears, this poses no dangers other than excess oil fouling of the spark plugs and excess exhaust smoke. This over-oiling can be compensated for by making the appropriate adjustment in the pump actuating cable (VM series carbs), or the pump actuating rod (BS series carbs), so that the pump control arm will actually start moving/opening slightly later than normal as when the pump setting marks are aligned per fig. 6-19 on page 51. Plug checks are important when making any changes to the pump setting and changes to the setting should be made in very small increments i.e. no more than ½ turn of the cable adjusting bolt, or rod adjusting nut, at a time.
Page 50, Oil Pump & Oil Pipe, Inspection & Repair, para. 1 b). This paragraph should be written in part as:....oil is injected from a suitable oil can/squeeze bottle into the individual ports in the injection pump oil distribution ring until all air is expelled and only pure oil appears at the corresponding banjo fitting at the engine end of that particular oil line. It is a good idea to disconnect each oil line in turn from the engine block to insure that excess oil is not pumped into the engine during this operation. It is.....etc.