Service Manual

5. Install timing belt first onto crankshaft sprocket, then
oil pump sprocket and camshaft sprocket in that order.
IMPORTANT: Install belt so there is no looseness on
tension side of timing belt. The rod should not be re-
moved until timing belt is completely installed.
6. Apply counterclockwise force to camshaft sprocket to
apply tension to tension side of belt.
7. Make sure all timing marks are lined up, then loosen
tensioner nut 1 to 2 turns and allow spring force to ten-
sion belt.
Figure 89
8. Pull rod from plug hole on left side of cylinder block.
Apply 3M ATD 8660 or equivalent sealant, then install
plug and tighten to a torque of 15 – 22 Nm (11 – 16 ft–lb).
IMPORTANT: The following steps give proper ten-
sion t
o timing belt. DO NOT turn crankshaft counter-
clockwise and push belt to check tension.
9. Turn crankshaft clockwise by nine (9) camshaft
sprocket teeth (81
) to align timing mark on camshaft
sprocket with tension set mark on timing belt rear cover.
10. Make sure timing belt teeth are engaged with cam-
Figure 90
shaft sprocket teeth, then tighten tensioner nut.
11. Pull center of tension side of belt between thumb and
finger as shown in illustration. Make sure clearance be-
tween belt back and inner surface of seal line is 12 mm
(.47 in.).
Figure 91
Liquid Cooled Gas Engine
Page 3
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Workman 3000/4000 Series