Service manual

G420F(FE) Service Manual Chapter 3. Engine Mechanical System 44
Inspection
SPROCKET, TENSIONER, IDLER
1. Check the camshaft sprocket, crankshaft sprocket,
tensioner and idler for wear, crack and damage
and replace it if necessary.
2. Check the tensioner and idler pulley for smooth
rotation, check for play and noise, and replace it if
necessary.
3. If grease leak is inspected, replace it.
TIMING BELT
1. Check the belt for oil or dust deposit and replace
it if necessary. In case of small amount of oil or
dust, clean it with a rag or paper instead of a
solvent.
2. After overhauling the engine or readjusting the
belt, inspect the belt in detail and replace it with a
new one if the following defects are detected.
CAUTION
Do not bend or twist the timing belt.
Take care not to contact the timing belt with oil,
water, grease and steam.