Motorcycle engine lube system Yamaha XVS 1100 Drag Star (1998-2008)

Removing the oil pump
Order Job name/Part name Quantity Remarks Removing the oil pump Remove the parts in the order listed. Rotor assembly Refer to " Generator and starter clutch ". Crankcase cover (right) Refer to " Clutch ". 1 Driven gear cover 1 2 Driven gear (oil...

Disassembling the oil pump
Order Job name/Part name Quantity Remarks Disassembling the oil pump Disassembly the parts in the order listed. 1 Oil pump cover 1 2 Oil pump body 1 3 Oil pump rotor (inner) 1 4 Oil pump rotor (outer) 1 Refer to " Assembling the oil pump ". 5 Pin 1...

Checking the oil pump
1. Check: oil pump driven gear oil pump body oil pump driven gear cover Cracks/damage/wear → Replace the defective part(-s). 2. Measure: inner-rotor-to-outer-rotor-tip clearance (a) outer-rotor-to-oil-pump-body-side clearance (b)...

Checking the oil delivery pipes
The following procedure applies to all of the oil delivery pipes. 1. Check: oil delivery pipes (1) Damage → Replace. Obstruction → Wash and blow out with compressed air.

Checking the oil strainer
1. Check: oil strainer (1) Damage → Replace. Contaminants → Clean with engine oil.

Assembling the oil pump
1. Assemble: oil pump: 10 Nm (1.0 m·kg) Caution! After tightening the bolts, make sure that the oil pump turns smoothly. Note: Align the pin (a) with the slots (b) on the inner rotor.