37656 SCREW, SHIELD TO TOP SUPPORT BRACKET (5/8") Mercury
1050312BC, 1060504, 1070500, 1075524, 1080500, 1080508, 1090528, 1115503, 1115525, 1115528, 1140528, 1150503, 1150538, 1150625, 1150628, 1175626, 1200628, 1650503, 1650506, 1700507, 1850506
SCREW
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Mercury entire parts catalog list:
- COWL SUPPORT BRACKETS » 37656
- COWL SUPPORT BRACKETS » 37656
- COWL SUPPORT BRACKETS » 37656
- STARTER MOTOR AND WIRING HARNESS » 37656
- STARTER MOTOR AND WIRING HARNESS » 37656
- STARTER MOTOR AND WIRING HARNESS » 37656
1115503 1973,1974,1976,1977
1115525 1985
1115528 1978,1979
1140528 1978,1979
1150503 1973,1974,1975,1976,1977,1985
1150538 1978
1150625 1985
- TRANSOM BRACKETS(S-N-USA-5503246-AUS-8062734 AND BELOW) » 37656
- STARTER MOTOR, STARTER SOLENOID, RECTIFIER AND WIRING HARNES » 37656
1175626 1976,1977,1978,1979,1980,1985,1986,1988
1200628 1978,1979,1980,1982,1983,1984,1985,1986,1987,1988
1650503 1973,1974,1975
- COWL SUPPORT BRACKETS » 37656
- COWL SUPPORT BRACKETS » 37656
- COWL SUPPORT BRACKETS » 37656
- STARTER MOTOR AND WIRING HARNESS » 37656
Information:
If the valve lash requires adjustment several times in a short period of time, excessive wear exists in a different part of the engine. Repair the problem in order to prevent more damage to the engine.Not enough valve lash can be the cause of rapid wear of the camshaft and valve lifters. Not enough valve lash can indicate that the seats for the valves are worn.Valves become worn due to the following causes:
Incorrect operation of fuel injection nozzles
Excessive dirt and oil are present on the filters for the inlet air.
Incorrect fuel settings on the fuel injection pump.
The load capacity of the engine is frequently exceeded.Too much valve lash can cause broken valve stems, springs, and spring retainers. Too much valve lash can be an indication of the following problems:
Worn camshaft and valve lifters
Worn rocker arms
Bent pushrods
Broken socket on the upper end of a pushrod
Loose adjustment screw for the valve lashIf the camshaft and valve lifters show rapid wear, look for fuel in the lubrication oil or dirty lubrication oil as a possible cause.Valve Lash Check
An adjustment is NOT NECESSARY if the measurement of the valve lash is in the acceptable range. Check the valve lash while the engine is stopped. The clearance is specified in Table 2.
Table 1
Valve Lash    
Valves    Acceptable Clearance for Valve Lash    
Inlet     0.20 mm (0.008 inch)    
Exhaust    
0.20 mm (0.008 inch)    If the measurement is not within the acceptable clearance, adjustment is necessary. Refer to the Systems Operation, Testing and Adjusting Module, "Valve Lash Adjustment" topic.Valve Lash Adjustment
The valve lash is measured between the top of the valve stem and the rocker arm lever. Refer to the Specifications Module, "Engine Design" topic for the correct valve lash.Note: No. 1 cylinder is at the front of the engine.Note: When these procedures are performed, the front housing must be installed.Perform the following procedures in order to adjust the valve lash:
Illustration 1 g00396857
Sequence for setting the valve lash (typical example)
Illustration 2 g00473333
(9) Adjustment screw (10) Feeler gauge
Rotate the crankshaft in the clockwise direction that is viewed from the front of the engine. When the inlet valve of the number 4 cylinder has opened and the exhaust valve of the number 4 cylinder has not completely closed, measure the valve lash of the inlet valve (1) and the exhaust valve (2) of the No. 1 cylinder.
Loosen the valve adjustment screw locknut that is on the adjustment screw (9) .
Place the appropriate feeler gauge (10) between the rocker arm and the valve. Turn the adjustment screw (9) while the valve adjustment screw locknut is being held from turning. Adjust the valve lash until the correct specification is achieved.
After each adjustment, tighten the valve adjustment screw locknut while the valve adjustment screw (9) is being held from turning.
Rotate the crankshaft in a clockwise direction that is viewed from the front of the engine. When the inlet valve of the number 2 cylinder has opened and the exhaust valve of the number 2 cylinder has not completely closed measure the valve lash of the inlet valve (5) and the exhaust valve (6) of the No. 3 cylinder.
Loosen the valve adjustment screw locknut that is on the adjustment screw (9) .
Place the appropriate feeler gauge (10) between the rocker arm and the valve. Turn the adjustment screw (9) while the valve adjustment screw locknut is being held from turning. Adjust the valve lash until the correct specification is achieved.
After each adjustment, tighten the valve adjustment screw locknut while the valve adjustment screw (9) is being held from turning.
Rotate the crankshaft in a clockwise direction that is viewed from the front of the engine. When the inlet valve of the number 1 cylinder has opened and the exhaust valve of the number 1 cylinder has not completely closed measure the valve lash of the inlet valve (7) and the exhaust valve (8) of the No. 4 cylinder.
Loosen the valve adjustment screw locknut that is on the adjustment screw (9) .
Place the appropriate feeler gauge (10) between the rocker arm and the valve. Turn the adjustment screw (9) while the valve adjustment screw locknut is being held from turning. Adjust the valve lash until the correct specification is achieved.
After each adjustment, tighten the valve adjustment screw locknut while the valve adjustment screw (9) is being held from turning.
Rotate the crankshaft in a clockwise direction that is viewed from the front of the engine. When the inlet valve of the number 3 cylinder has opened and the exhaust valve of the number 3 cylinder has not completely closed measure the valve lash of the inlet valve (3) and the exhaust valve (4) of the No. 2 cylinder.
Loosen the valve adjustment screw locknut that is on the adjustment screw (9) .
Place the appropriate feeler gauge (10) between the rocker arm and the valve. Turn the adjustment screw (9) while the valve adjustment screw locknut is being held from turning. Adjust the valve lash until the correct specification is achieved.
After each adjustment, tighten the valve adjustment screw locknut while the valve adjustment screw (9) is being held from turning.
Incorrect operation of fuel injection nozzles
Excessive dirt and oil are present on the filters for the inlet air.
Incorrect fuel settings on the fuel injection pump.
The load capacity of the engine is frequently exceeded.Too much valve lash can cause broken valve stems, springs, and spring retainers. Too much valve lash can be an indication of the following problems:
Worn camshaft and valve lifters
Worn rocker arms
Bent pushrods
Broken socket on the upper end of a pushrod
Loose adjustment screw for the valve lashIf the camshaft and valve lifters show rapid wear, look for fuel in the lubrication oil or dirty lubrication oil as a possible cause.Valve Lash Check
An adjustment is NOT NECESSARY if the measurement of the valve lash is in the acceptable range. Check the valve lash while the engine is stopped. The clearance is specified in Table 2.
Table 1
Valve Lash    
Valves    Acceptable Clearance for Valve Lash    
Inlet     0.20 mm (0.008 inch)    
Exhaust    
0.20 mm (0.008 inch)    If the measurement is not within the acceptable clearance, adjustment is necessary. Refer to the Systems Operation, Testing and Adjusting Module, "Valve Lash Adjustment" topic.Valve Lash Adjustment
The valve lash is measured between the top of the valve stem and the rocker arm lever. Refer to the Specifications Module, "Engine Design" topic for the correct valve lash.Note: No. 1 cylinder is at the front of the engine.Note: When these procedures are performed, the front housing must be installed.Perform the following procedures in order to adjust the valve lash:
Illustration 1 g00396857
Sequence for setting the valve lash (typical example)
Illustration 2 g00473333
(9) Adjustment screw (10) Feeler gauge
Rotate the crankshaft in the clockwise direction that is viewed from the front of the engine. When the inlet valve of the number 4 cylinder has opened and the exhaust valve of the number 4 cylinder has not completely closed, measure the valve lash of the inlet valve (1) and the exhaust valve (2) of the No. 1 cylinder.
Loosen the valve adjustment screw locknut that is on the adjustment screw (9) .
Place the appropriate feeler gauge (10) between the rocker arm and the valve. Turn the adjustment screw (9) while the valve adjustment screw locknut is being held from turning. Adjust the valve lash until the correct specification is achieved.
After each adjustment, tighten the valve adjustment screw locknut while the valve adjustment screw (9) is being held from turning.
Rotate the crankshaft in a clockwise direction that is viewed from the front of the engine. When the inlet valve of the number 2 cylinder has opened and the exhaust valve of the number 2 cylinder has not completely closed measure the valve lash of the inlet valve (5) and the exhaust valve (6) of the No. 3 cylinder.
Loosen the valve adjustment screw locknut that is on the adjustment screw (9) .
Place the appropriate feeler gauge (10) between the rocker arm and the valve. Turn the adjustment screw (9) while the valve adjustment screw locknut is being held from turning. Adjust the valve lash until the correct specification is achieved.
After each adjustment, tighten the valve adjustment screw locknut while the valve adjustment screw (9) is being held from turning.
Rotate the crankshaft in a clockwise direction that is viewed from the front of the engine. When the inlet valve of the number 1 cylinder has opened and the exhaust valve of the number 1 cylinder has not completely closed measure the valve lash of the inlet valve (7) and the exhaust valve (8) of the No. 4 cylinder.
Loosen the valve adjustment screw locknut that is on the adjustment screw (9) .
Place the appropriate feeler gauge (10) between the rocker arm and the valve. Turn the adjustment screw (9) while the valve adjustment screw locknut is being held from turning. Adjust the valve lash until the correct specification is achieved.
After each adjustment, tighten the valve adjustment screw locknut while the valve adjustment screw (9) is being held from turning.
Rotate the crankshaft in a clockwise direction that is viewed from the front of the engine. When the inlet valve of the number 3 cylinder has opened and the exhaust valve of the number 3 cylinder has not completely closed measure the valve lash of the inlet valve (3) and the exhaust valve (4) of the No. 2 cylinder.
Loosen the valve adjustment screw locknut that is on the adjustment screw (9) .
Place the appropriate feeler gauge (10) between the rocker arm and the valve. Turn the adjustment screw (9) while the valve adjustment screw locknut is being held from turning. Adjust the valve lash until the correct specification is achieved.
After each adjustment, tighten the valve adjustment screw locknut while the valve adjustment screw (9) is being held from turning.
Parts screw Mercury:
52195
52195 SCREW(SHORT)
1005200, 1020100, 1020202, 1035204, 1035207, 1040100, 1040102, 1040200, 1040206, 1040208, 1045205, 1075101, 1075202, 1090520, 1090524, 1090528, 1110100, 1110102, 1115100, 1115503, 1115520, 1115523, 1115525, 1115528, 1135100, 1140520, 1140528, 1140629
37655
37655 SCREW (39)(40)
1040100, 1050200, 1050312BC, 1060504, 1070500, 1075101, 1080500, 1080508, 1090520, 1110100, 1115100, 1115503, 1115520, 1115523, 1115525, 1135100, 1140520, 1150503, 1150625, 1150628, 1175626, 1200203, 1200628, 1500101, 1500205, 1500206, 1650100, 16505
54803
54803 SCREW, CONNECTING ROD
1040200, 1040208, 1070500, 1080500, 1080508, 1090520, 1090528, 1115100, 1115503, 1115520, 1115523, 1115525, 1115528, 1135100, 1140520, 1140528, 1140629, 1150503, 1150538, 1150625, 1400100, 1402202, 1402205, 1650502, 1650503, 1650506, 1700507, 1800100
27281
27281 SCREW, FUEL PUMP MOUNTING (1 3/8")
1080508, 1115100, 1115503, 1115525, 1135100, 1150503, 1150625, 1400100, 1402202, 1800100, 1850503, 1850506
55337
55337 SCREW, THROTTLE CONTROL LEVER TO CYLINDER BLOCK (1 3/4")
1035204, 1035207, 1040200, 1040208, 1045217, 1050200, 1050312BC, 1060504, 1070500, 1075524, 1080500, 1080508, 1090524, 1115525, 11354120D, 1135412GD, 1135726, 1150453BD, 1150453GD, 1150453JD, 1150625, 1150628, 1175412GD, 1175413LD, 1200412GD, 1200413
57021
57021 SCREW, STATOR TO UPPER END CAP (7/8")
1135100, 1500101, 1500205, 1650100, 1650502, 1650503, 1800100
69052
69052 SCREW, SWITCH BOX PLATE ATTACHING (1/2")
1020208, 1040208, 1090528, 1115528, 1140528, 1140629, 1150538, 1200203, 1402205, 1650503
23051