5-28 ENGINE TOP END
Align the "R" mark [A] (TDC mark for the rear piston) with
the middle of the notch [B] (310° turn from the front piston
Engage the rear camshaft sprocket with the camshaft
chain as shown.
Timing Marks [A] and R Mark [B]
Cylinder Head Upper Surface [C]
Pull the front side (inlet side) of the chain taut to install the
Install the rear chain tensioner and check the front/rear
chain timing again.
The timing marks must be aligned with the cylinder head
upper surface and positioned as shown after chain ten-
Install the rocker cases and rocker case covers (see this
Torque - Timing Inspection Cap, Rotor Bolt Cap: 1.5 N·m
(0.15 kgf·m, 13 in·lb)
Camshaft Sprocket Installation
Use the sprocket marked F for the front camshaft [A] and
the sprocket marked R for the rear camshaft [B].
Apply a non-permanent locking agent to the camshaft
sprocket bolts and tighten them to the specified torque.
Torque - Camshaft Sprocket Bolts: 15 N·m (1.5 kgf·m, 11
Camshaft/Rocker Case Wear
Cut strips of plastigage to journal width. Place a strip
on each journal parallel to the camshaft installed in the
Measure each clearance between the camshaft and the
rocker case using plastigage.
Do not turn the camshaft when the plastigage is be-
tween the journal and camshaft cap.