NVE 866 Challenger Series Owner's Manual page 12

Oil Pump Flow Rate Adjustment Procedures
1. Remove oil pump cap (3/32 hex).
Ensure o-ring stays intact.
2. Move cam so adjustment screws
are resting on lower flats
3. Hold adjustment screw (9/64 hex or flat
head screw) while loosening jam nut
1/4" wrench). Spin jam nut all the way
up to the head.
4. Tighten adjustment screw (CW) until
it seats on the cam. (Do not force!
12 | 866 Challenger Series
3/32 Hex
Upper Flat
Lower Flat
Adjustment
Screw 9/64
Hex or Flat
Head Screw
Depending
on Unit
Jam Nut
Seated
Against Flat
of Cam
5. Back the screw off the desired amount
of turns (CCW):
a. 607 PRO = 7 turns
b. 866 = 4.75 turns
Tip: More turns out equals less oil flow.
Fewer turns out equals more oil flow.
6. Retighten jam nut while holding
adjustment screw.
7. Repeat process for other
adjustment screw.
8. Reassemble cover onto pump
assuring o-ring does not fall out of
groove, and springs are located over
adjustment screws
Springs
Located Over
Screws
If oil pump requires further adjustment, the
rule is 1/2 turn CCW = 1 oz / hr higher oil flow.
Jam Nut
Tight Against
Piston
O-ring
Seated in
Groove
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