Specifications

°
7
To measure this clearance, the Kit Adjustment tool includes a lever. This lever as you may
see on the following picture is pushing the tappet valve. The distance from valve to piston is
displayed on the gage.
Stage of the valve to piston measurement:
 Place the crankshaft 10° BTDC
 Turn the gage scaling so that the needle
display “0mm”
 Apply a force on the lever in order to lift the
valve till the valve hit the piston
 Read the position of the needle on the gage
The minimum distance between valve and piston is mentioned on the Kit manual. To avoid any
engine failure, you can not go lower than the recommended values. Moreover, in case of a
distance between valve and piston measured under the minimum value (due to the use of
special parts), it is recommended to move out the camshaft in order to secure the valve to
piston distance.
Valve to piston distance has the priority on the event angle.
Once the exhaust camshaft event angle has reached Kit Manual recommended value and
valve to piston clearance over the minimum secure distance, you can start to set up intake
camshaft.