Refer to “engine top side disassembly” .
Refer to “engine top side assembly” .
Cylinder distortion
Check the gasket surface of the cylinder for distortion.
Use a straightedge and thickness gauge. Take clearance readings at several places. If any reading exceeds the service limit, replace the crankcase set.
Special tool : 09900–20803 (thickness gauge)
Cylinder distortion service limit: 0.02 Mm (0.0008 In)
Cylinder bore
Measure the cylinder bore diameter at six places. If any one of the measurements exceed the limit, overhaul the cylinder and replace the piston with an oversize piston.
The remaining cylinders must also be rebored accordingly; otherwise, the imbalance might cause excessive vibration.
Special tool (a): 09900–20530 (cylinder gauge set)
Cylinder bore standard: 74.500 – 74.515 Mm (2.9331 – 2.9337 In)
Piston-to-cylinder clearance
Refer to “piston and piston ring inspection” (page 1d- 71).
Valve seat repair
The valve seats (1) for both the intake and exhaust
valves are machined to three different angles. The seat
contact surface is cut at 45°.
Intake valve
Exhaust valve
Caution
the valve seat contact area must be
inspected after e ...
Fuel tank construction
Fuel tank heat
shield
: aluminum film side should face the engine side.
Fuel tank front cover
Fuel tank front bracket
Velcro fastenings
: clean the adhesive surface before adhering
the velcro fastenings.
Insert
to the bracket.
Apply
...
Steering damper maintenance
Keep the steering damper
shaft 1 clean at all times.
Wipe off any oil residue with a
cloth.
Do not confuse the grease-like
residue on the steering damper's
shaft with an oil leak. Collection of
this residue is normal and is from
oil seal lubricant used in the
damper.
Yo ...