The mechanical oiler is properly adjusted at the factory before the machine is shipped
to care for the oil supply while the motor is new. This adjustment may require resetting
after the machine has been operated 500 miles.
If the nature of the country where the motorcycle is used is such that a re‑adjustment
of the oil feed is necessary, proceed as follows:
First: Remove caps (1) and (2), Figure 5, and loosen—but do not remove—screw (3).
Second: To increase oil feed, turn plunger screw (4) clockwise no more than half a turn.
Tighten screw (3), replace caps (1) and (2), and test the machine. Repeat if necessary.
Third: To reduce oil feed, turn screw (4) counter‑clockwise instead.
Proper oil feed produces a slight blue haze at the exhaust and maintains crankcase level.
Oil feed is too low if the auxiliary hand pump is needed during normal service.
Oil feed is excessive if the engine smokes continuously, fouls plugs, or builds crankcase level.
If it becomes necessary to alter the oil flow, loosen lock‑nut (B), Fig. 6, and turn screw (A):
• Right (IN) to decrease oil supply
• Left (OUT) to increase oil supply
Turn screw (A) only one half turn at a time. Always tighten lock‑nut (B) after adjustments.
When screw (A) is fully in against (B), the oiler will not pump.
IMPORTANT — AIR LOCK
The mechanical oiler can fail only when the tank becomes dry. If an air lock occurs:
• Remove screw (C) and wait until oil flows freely with no bubbles.
• To confirm pumping, remove screw (D) and run the motor—oil should appear in drops.
• Replace screw (D) after testing.
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