mercury Workshop Repair Guides

Mercury Workshop Service and Repair Manuals

Valve Clearance|Specifications|Page 1304 > < Valve Clearance|Specifications|Page 1302
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Valve Clearance: Adjustments

Valve Arrangement

FRONT TO REAR

4-97.6 & 4-116..................................................................................................................................................................................................I-E-I-E-I-E-I-E
4-140.................................................................................................................................................................................................................E-I-E-I-E-I-E-I
4-153.................................................................................................................................................................................................................I-E-I-E-E-I-E-I

Fig. 10 Positioning camshaft for collapsed cam  follower check. 4-140 Overhead valve engine

Fig. 1  Adjusting Valves

4-140 OVERHEAD CAM ENGINE

1.

Position camshaft so that base circle of cam lobe is facing the cam follower, Fig. 10, of the valve to be checked.

2.

Using tool T74P-6565-A or equivalent, slowly apply pressure onto the cam follower until the lash adjuster is completely collapsed. Hold follower
in this position and insert the proper size feeler gauge between base circle of the cam and the cam follower, Fig. 11.

Valve Clearance|Specifications|Page 1304 > < Valve Clearance|Specifications|Page 1302