Racing Kit
2-4
Valve Spring Replacement
Replace the inner and outer intake valve springs with the racing kit springs.
No.1 cam lobe
Camshaft Replacement
1. Remove the cam sprockets from the standard camshafts.
2. Clean the rotor bolt threads thoroughly, and apply locking agent to the
threads of the cam pulse rotor bolt.
3. Reinstall the cam sprockets onto the racing kit camshafts.
4. Install the camshafts onto the cylinder head, and then install the cam chain
onto the sprockets.
5. Align the “T” mark on the ignition pulse generator rotor with the index mark
on the right crankcase cover. Make sure the No.1 piston is TDC (Top Dead
Center) on the compression stroke.
6. Make sure that the timing marks on the cam sprockets are facing outward
and flush with the cylinder head upper surface as shown.
Timing marks
Camshaft and Cam Pulse Generator Rotor Replacement
Cam Pulse Rotor Replacement
1. Remove the standard cam pulse rotor, and clean the rotor bolt threads thor-
oughly.
Apply locking agent to the threads of the cam pulse rotor bolt.
2. With the No.1 cam lobe facing up, install the racing kit cam pulse rotor as
shown in the illustration below (“OUT” mark on the rotor facing out).
Outer valve spring
(racing kit)
Inner valve spring
(racing kit)
“OUT” mark
