Service Manual

5-16 ENGINE TOP END
Cylinder, Piston
CAUTION
The connecting rod and the connecting rod big end
cap are machined at the factory in the assembled
state, so they must be replaced together as a set.
•
Apply engine oil to the inner surface [A] of the connecting
rod big end [B] and cap [C].
•
Set rod and cap aligning the mark [D] of rod to the mark of
cap, install the connecting rod big end cap in their original
position on connecting rod big end.
•
Apply a sm all amount of engine oil to the cap bolts [E].
•
Tighten the cap bolts.
Torque - Connecting Rod Big End Cap Bolts: 5.9 N·m (0.60
kgf·m, 5 2 in·lb)
•
Install:
Camshaft (see Camshaft/Crankshaft chapter)
Crankcase Cover (see Camshaft/Crankshaft chapter)
•
Install the other removed parts.
Piston Cleaning
•
Remove the piston and piston rings (see Piston Re-
moval).
CAUTION
Never clean the piston head assembled. Carbon
particles w ill fall between the piston and cylinder,
and damage the piston and cylinder.
•
Scrape the carbon off [A] the piston head.
•
Use the scraping tools carefully. D o not gouge the piston
head. To avoid gouging, use scrapers that are made of a
material that will not cause damage.
•
Cleanthepistonringgrooves[A]withabrokenpistonring
or other suitable tools.
CAUTION
Be careful not to widen the ring grooves. Damaged
ring grooves will require piston replacement.