Remove the front tires.(RH)
Remove the side cover.
The tensioner should be lifted up to remove the drive belt(A).
Remove the engine mounting bracket(A) and the ground cable(B).
Remove the timing belt upper cover(A).
Remove the crankshaft pulley(A).
Remove the timing belt lower cover(A).
If remove the tensioner, easy the working ability.
Remove the engine support bracket(A).
Align the timing marks(A, B) on the camshaft sprocket(C) and the crankshaft sprocket(D) with the marks(E, F) on the cylinder head(G) and the oil pump case(H) with rotating the engine.
Insert a pin(A) into the aligned holes in the auto-tensioner(B).
Using a hexagonal wrench (5mm)(A), loosen the stop bolt(B). And then, turning the auto-tensioner(C) clockwise fully with the boss bolt(D) and 12mm spanner(E), retighten the stop bolt(B).
Remove the timing belt.
To be prepared in case the removed belt is used, mark an arrow on the timing belt in the direction of rotation before removing it.