Service Manual

Inspection and Adjustments

Valve Clearance

IMPORTANT: After adjusting timing belt tension, ad-

just valve clearance.

1. Warm up the engine until coolant is at 80

to 95 C

(176 to 203 F).

2. Remove rocker cover.

3. Remove timing belt cover.

cover A

Tiiming belt

Figure 16

4. Turn crankshaft clockwise to align triangular mark on

camshaft sprocket with timing mark on timing belt rear

cover to set No. 1 cylinder on compression top dead

center.

IMPORTANT: Turn crankshaft only in clockwise

direction.

ming mark

Figure 17

5. Measure valve clearances at locations shown in

illustration.

Standard Values mm (in.)

Item When warmed up When cold

(Reference)

Intake valve 0.20 (.008) 0.14 (.006)

Exhaust valve 0.30 (.012) 0.24 (.009)

Figure 18

Liquid Cooled

Gas Engine

Workman 3000/4000 Series Page 3 – 17 Liquid Cooled Gas Engine