TGB EST 1000, Service Manual

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5-2. ENGINE TOP END
5-2-22
GENERAL
During assembly/installation, use the torque values and service products as in the exploded views.
Clean threads before applying a thread locker.
WARNING
Torque wrench tightening specifications must strictly be adhered to.
Locking devices (e.g.: locking tabs, elastic stop nuts, self-locking fasteners, cotter pin,
etc.) must be replaced.
TROUBLESHOOTING
USUALL ENGINE NOISE OR VIBRATION
1. Improper valve clearance adjustment and/or worn out rocker arm(s)
Re-adjust valve clearance and/or replace defective parts.
2. Defective chain tensioner
Replace chain tensioner.
3. Worn out timing chain guide(s)
Replace timing chain guide(s)
4. Stretched timing chain or worn out timing gears
Replace timing chain and timing gears.
5. Loose timing gear retaining bolts
Retighten bolts to recommended torque.
6. Incorrect camshaft timing
Replace damaged components and readjust camshaft timing.
ENGINE LACKS ACCELERATION OR POWER
1. Incorrect camshaft timing
Replace damaged components and readjust camshaft timing.