Breather Hose; Cylinder Head Decarbonization; Adjusting The Valve Clearance - Yamaha EF7000 Service Manual

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PERIODIC MAINTENANCE
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2-12

BREATHER HOSE

1. Check:
9 Breather hose 1
Crack/damage → Replace.
Poor connection → Correct.

CYLINDER HEAD DECARBONIZATION

1. Remove:
9 Cylinder head
(Refer to "CYLINDER HEAD COVER,
CYLINDER HEAD" in 7VB-F8197-E0
chapter 3)
2. Eliminate:
9 Carbon deposits
(Refer to "CHECKING THE CYLINDER
HEAD" in 7VB-F8197-E0 chapter 3)
3. Install:
9 Cylinder head
( R e f e r t o " I N S TA L L I N G T H E
CYLINDER HEAD ASSEMBLY" in
7VB-F8197-E0 chapter 3)

ADJUSTING THE VALVE CLEARANCE

1. Remove:
9 Spark plug cap 1
9 Spark plug 2
NOTICE
Before removing the spark plug, use com-
pressed air to clean the cylinder head
cover to prevent dirt from falling into the
engine.
2. Remove:
9 Breather hose 3
9 Cylinder head cover 4
9 Cylinder head cover gasket
CHK
ADJ