Subsection 09 (TIMING CHAIN)
TROUBLESHOOTING
UNUSUAL ENGINE NOISE OR VIBRATION
1.
IMPROPER VALVE CLEARANCE ADJUSTMENT
AND/OR WORN OUT ROCKER ARM(S)
- Readjust valve clearance and/or replace defective
part(s), refer to TOP END subsection.
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 SCREWS
- Retighten screws 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.
PROCEDURES
TIMING CHAIN TENSIONERS
Timing Chain Tensioner Location
570 Engine
The timing chain tensioner is located on the back
of each cylinder head.
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570 ENGINE (FRONT CYLINDER SHOWN)
1. Timing chain tensioner
850 and 1000R Engines
The timing chain tensioner is located in the cylin-
der.
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850 AND 1000R ENGINES (FRONT CYLINDER SHOWN)
1. Timing chain tensioner
Timing Chain Tensioner Access
For the front cylinder, the chain tensioner is acces-
sible from the RH side.
For the rear cylinder chain tensioner, remove the
exhaust system outer heat shield. Refer to
EX-
HAUST SYSTEM
subsection.
Removing the Timing Chain Tensioner
1. Make sure the applicable piston is set to TDC ig-
nition. Refer to
CAMSHAFT TIMING GEARS
in
this subsection.
2. Carefully remove chain tensioner screw plug
and release spring tension.
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