Timing Chain Tensioner: Service and Repair

Cam Chain Auto-Tensioner Removal and Installation

Removal

1. Chain Case Cover





1. Remove the chain case cover.

2. Cam Chain Auto-Tensioner





1. Turn the crankshaft counterclockwise to compress the auto-tensioner.





2. Rotate the crankshaft counterclockwise to align the holes on the lock (A) and the auto-tensioner (B), then insert a 1.2 mm (3/64 in) diameter pin (C) into the holes. Turn the crankshaft clockwise to secure the pin.

NOTE: If the holes in the lock and the auto-tensioner do not align, continue to rotating the crankshaft counterclockwise until the holes align, then install the pin.





3. Remove the auto-tensioner.

Installation

1. Cam Chain Auto-Tensioner




NOTE: Check the auto-tensioner cam position. If the position is not aligned, set the first cam to the first edge of the rack

1. Compress the auto-tensioner when replacing the cam chain. Remove the pin (A) from the auto-tensioner that was installed during removal. Turn the plate (B) counterclockwise, to release the lock, then press the rod (C), and set the first cam (D) to the first edge of the rack (E). Insert the 1.2 mm (3/64 in) diameter pin back into the holes (F).

NOTE: If the chain tensioner is not set up as described, the tensioner will be damaged.





2. Install the auto-tensioner.





3. Remove the pin from the auto- tensioner.

2. Chain Case Cover





1. Remove all of the old liquid gasket from the chain case cover mating surfaces, the bolts, and the bolt holes.

2. Clean and dry the chain case cover mating surfaces.

3. Apply liquid gasket (P/N 08718-0004 or 08718-0009) to the chain case mating surface of the chain case cover and to the inside edge of the threaded bolt holes. Install the component within 5 minutes of applying the liquid gasket.

NOTE:
* Apply a 2.5 mm (0.098 in) diameter bead of liquid gasket along the broken line (A).
* If too much time has passed after applying the liquid gasket, remove the old liquid gasket and residue, then reapply new liquid gasket.





4. Install the chain case cover.

NOTE:
* Wait at least 30 minutes before filling the engine with oil.
* Do not run the engine for at least 3 hours after installing the chain case cover.