Remove Camshafts - Yanmar BY Series Service Manual

Camshaft and Timing Gear Train
12/05

Remove Camshafts

NOTICE: Identify all parts and their location using
an appropriate method. It is important that all parts
are returned to the same position during the
reassembly process.
1. Remove cylinder head cover. See Remove and
Install Cylinder Head Cover on page 5-17.
2. Drain engine coolant.
3. Remove alternator drive belt. See Remove and
Install Alternator on page 11-5.
4. Remove cover (Figure 5-90, (1)) and bracket
(Figure 5-90, (2)).
Figure 5-90
( 1 )
Figure 5-90
5. Rotate the crankshaft until No. 1 cylinder intake
camshaft lobes are facing down.
6. Remove one bolt (Figure 5-91, (1)).
BY Service Manual
Figure 5-91
Note: One bolt must be removed prior to
rotating No. 1 piston to TDC position.
7. Remove plug (Figure 5-92) from timing case
cover.
( 2 )
Figure 5-92
0003777
8. Rotate crankshaft counterclockwise 45°.
© 2009 Yanmar Marine International
ENGINE
(1)
Figure 5-91
Figure 5-92
0003774
5-51