Filter
Top Products
PERIODIC MAINTENANCE 2-15
Periodic Maintenance Procedures
Engine To p End
Air Suction Valve Inspection
•
Remove the air suction valve (see Engine Top End chap-
ter).
•
Visually inspect the reeds [A] for cracks, folds, warps,
heat damage, or other damage.
If there is any doubt as to the condition of the reed, replace
the air suction valve as an assembly.
•
Check the reed contact areas [B] of the valve holder for
grooves, scratches, any signs of separation from the
holder, or heat damage.
If there is any doubt as to the condition of the reed contact
areas, replace the air suction valve as an assembly.
If any carbon or other foreign particles have accumulated
between the reed and the reed contact area, wash the
valve assembly with a high-flash point solvent.
CAUTION
Do not scrape off the deposits with a scraper as this
could damage the rubber, requiring replacement of
the suction valve assembly.
Valve Clearance Inspection
NOTE
○
Valve clearance must be checked and adjusted when
the engine is cold (at room temperature).
•
Remove:
Seat (see Hull/Engine Hood chapter)
Cylinder Head Cover (see Engine Top End chapter)
•
Position the crankshaft at #1, #4 piston TDC as follows.
○
Using the shaft wrench [A], turn the crankshaft counter-
clockwise [B] and s et the crankshaft at #1, 4 piston TDC.
Special Tool - Shaft Wrench: 57001-1551
○
The timing marks [A] must be aligned with the cylinder
head upper surface [B] as shown.