0306461 SCREW,Gearcase head JOHNSON
20R69B, 20R70C, 20R71S, 20R72R, 20R73A, 25E72R, 25E73A, 25E74M, 25E75B, 25E76E, 25R69B, 25R70C, 25R71S, 33E69A, 33E69A, 33E70M, 33E70M, 40E71B, 40E72E, 40E73D, 40E74S, 40E75C, 40E76A, 4R69B, 4R70E, 4R71D, 4R72S, FD-22A, J40RSLR, J40RWCDB, J40RWCOM, J
SCREW
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BRP JOHNSON entire parts catalog list:
- LOWER UNIT GROUP » 0306461
20R71S, 20RL71S 1971
20R72R, 20RL72R 1972
20R73A, 20RL73A 1973
25E72R, 25EL72R, 25R72R, 25RL72R 1972
25E73A, 25EL73A, 25R73A, 25RL73A 1973
25E74M, 25EL74M, 25R74M, 25RL74M 1974
25E75B, 25EL75B, 25R75B, 25RL75B 1975
25E76E, 25EL76E, 25R76E, 25RL76E 1976
25R69B, 25R69D, 25RL69B, 25RL69D 1969
25R70C, 25R70E, 25RL70C, 25RL70E 1970
25R71S, 25RL71S 1971
33E69A, 33EL69A, 33R69A, 33RL69A 1969
33E69A, 33EL69A, 33R69A, 33RL69A 1969
33E70M, 33EL70M, 33R70M, 33RL70M 1970
33E70M, 33EL70M, 33R70M, 33RL70M 1970
40E71B, 40E71G, 40EL71B, 40EL71G, 40R71B, 40R71G, 40RL71B, 40RL71G 1971
40E72E, 40EL72E, 40R72E, 40RL72E 1972
40E73D, 40EL73D, 40R73D, 40RL73D 1973
40E74S, 40EL74S, 40R74S, 40RL74S 1974
40E75C, 40EL75C, 40R75C, 40RL75C 1975
40E76A, 40E76R, 40EL76A, 40EL76R, 40R76A, 40R76R, 40RL76A, 40RL76R 1976
4R69B, 4W69B, 4WF69B 1969
4R70E, 4RL70E, 4W70E, 4WL70E 1970
4R71D, 4RL71D, 4W71D, 4WL71D 1971
4R72S, 4W72S 1972
FD-22A, FD-22E, FD-22M, FDL-22A, FDL-22E, FDL-22M 1968
J40RSLR, J40RSR, J40RWCTR, J40RWLCTR 1983
J40RWCDB, J40RWLCDB 1986
J40RWCOM, J40RWLCOM 1985
J40RWCRA, J40RWLCRA 1984
JH-23A, JH-23M, JHF-23A, JHF-23M, JHFL-23A, JHFL-23M, JHL-23A, JHL-23M, JW-23A, JW-23M, JWF-23A, JWF-23M, JWFL-23A, JWFL-23M, JWL-23A, JWL-23M 1968
LD-13B, LD-13E, LD-13M, LDL-13B, LDL-13E, LDL-13M 1968
RX-16M, RX-16R, RXE-16M, RXE-16R, RXEL-16M, RXEL-16R, RXL-16M, RXL-16R 1968
V4A-20A, V4AL-20A 1968
V4S-20A, V4SL-20A 1968
V4T-14B, V4TL-14B 1968
VX-14B, VXH-14B, VXHL-14B, VXL-14B 1968
Information:
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     1U-8221     Lifting Strap     1    Start By:
Remove the rocker shaft and pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Remove".
Remove the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Remove".
Remove the crankshaft rear seal. Refer to Disassembly and Assembly, "Crankshaft Rear Seal - Remove".
If the engine is equipped with a balancer, remove the balancer. Refer to Disassembly and Assembly, "Balancer - Remove". If the engine is not equipped with a balancer, remove the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump - Remove".
If the crankshaft has been reground or if the crankshaft has been replaced, the height of the piston above the cylinder block must be inspected. It is necessary to remove the cylinder head in order to inspect the height of the piston above the cylinder block.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
The engine should be mounted on a suitable stand and placed in the inverted position.
If necessary, remove the cylinder head. Refer to Disassembly and Assembly, "Cylinder Head - Remove". Remove the pistons and connecting rods. Refer to Disassembly and Assembly, "Pistons and Connecting Rods - Remove".If the cylinder head, the pistons and the connecting rods have not been removed, remove the connecting rod caps. Refer to Disassembly and Assembly, "Connecting Rod Bearings - Remove".
Illustration 1 g01253717
Typical example
Remove allen head screws (1) . Remove bridge piece (2) .
Ensure that the bearing caps are marked for the location and orientation.
Illustration 2 g01253719
Typical example
Remove bolts (3) and bearing caps (4) from the cylinder block.
Illustration 3 g01253146
Typical example
Illustration 4 g01253137
Typical example
Remove lower bearings (5) from bearing caps (4) . Take care not to displace dowels (6) . For number three bearing cap, remove thrust washers (7) . Keep the lower bearing and the thrust washers with the respective bearing caps.Note: The lower bearings are plain bearings that have no oil holes. The dowels may remain in the bearing cap or in the cylinder block.
Illustration 5 g01254099
Typical example
Attach Tooling (A) and a suitable lifting device to crankshaft (8) . Carefully lift the crankshaft out of the cylinder block. The weight of the crankshaft is approximately 30 kg (66 lb).Note: Do not damage any of the finished surfaces on the crankshaft, when the crankshaft is removed from the engine.
Illustration 6 g01254104
Typical example
Illustration 7 g01889993
No. 1 Upper Main Bearing
Illustration 8 g03326558
Remaining Original Upper Main Bearing
Remove upper bearings (9) from the cylinder block. Keep the upper bearings with the respective bearing caps.Note: Number one upper main bearing has an oil slot. See Illustration 7. If the engine is equipped with the original main bearing shells, all other upper shells except number one will have a slot and two oil holes. See Illustration 8.If the engine has had replacement main bearing shells, the upper main bearing shells will all have a groove and an oil slot.
Remove thrust washers (10) from number three bearing in the cylinder block.
If necessary, remove the crankshaft gear. Refer to Disassembly and Assembly, "Crankshaft Gear - Remove and Install".
Parts screw JOHNSON:
0312852
0312852 SCREW,Throttle and choke valve
100ESL71A, 100ESL72R, 10E74G, 10E75C, 10E76G, 10E77A, 115EL77S, 115ESL69E, 115ESL70D, 115ESL73M, 115ESL74B, 115ESL75E, 115TXL77S, 125ESL71C, 125ESL72R, 135ESL73M, 135ESL74B, 135ESL75E, 140ML77S, 15E74G, 15E75C, 15E76A, 15E77M, 175TL77S, 1R69C, 1R70R,
0510193
0510193 SCREW,Sems
100ML79S, 10E74G, 10E75C, 10E76G, 10E77A, 10E78M, 10EL79B, 115ESL70D, 115ML79R, 140ML79R, 150TL78S, 150TL79C, 15E74G, 15E75C, 15E76A, 15E77M, 15E78B, 15E79E, 175TL77S, 175TL78C, 175TL79R, 1R69C, 1R70R, 200TL76S, 200TL77C, 200TL78R, 200TL79A, 20R69B,
0306408
0306408 SCREW,Short
40E69R, 40E70A, 40ES69R, 40ES70A, 40R69R, 40R70A, 4R69B, 4R70E, 4R71D, 4R72S, 4R73C, 4R74R, 4R75A, 4R76M, 4R79D, J3BRCEC, J3BRESR, J4BRCIC, J4BRHCCS, J4BRHCDE, J4BRHCNR, J4BRHCOB, J4BRHCRM, J4BRHCTA, J4BRHCUD, J4RLCSS, J4WCIC, J4WCNR, JH-23A, RD-30A,
0305284
0305284 SCREW
100ESL71A, 100ESL72R, 100ML79S, 115EL77S, 115ESL69E, 115ESL70D, 115ESL73M, 115ESL74B, 115ESL75E, 115ETZ78C, 115ML79R, 115TXL77S, 125ESL71C, 125ESL72R, 135ESL73M, 135ESL74B, 135ESL75E, 140ML77S, 140ML78C, 140ML79R, 150TL78S, 175TL77S, 175TL78C, 200TL7
0303078
0303078 SCREW
20R69B, 20R70C, 20R71S, 20R72R, 20R73A, 25E72R, 25E73A, 25E74M, 25E75B, 25E76E, 25E77S, 25E78C, 25E79R, 25R69B, 25R70C, 25R71S, 35E76G, 35E77C, 35E78R, 35E79A, 6R69M, 6R70B, 6R71E, 6R72D, 6R73S, 6R74C, 6R75R, 6R76A, 6R77M, 6R78B, 6R79E, CD-25A, FD-22
0302104
0302104 SCREW
20R69B, 20R70C, 20R71S, 20R72R, 20R73A, 25E72R, 25E73A, 25E74M, 25E75B, 25E76E, 25R69B, 25R70C, 25R71S, 33E69A, 33E69A, 33E70M, 33E70M, 35E76G, 40E69R, 40E70A, 40E71B, 40E72E, 40E73D, 40E74S, 40E75C, 40E76A, 40ES69R, 40ES70A, 40R69R, 40R70A, 50ES72C,
0304135
0304135 SCREW,Extension,rear 5 INCH LONGER PARTS
20R69B, 20R70C, 20R71S, 20R72R, 20R73A, 25E72R, 25E73A, 25E74M, 25E75B, 25E76E, 25R69B, 25R70C, 25R71S, 33E69A, 33E69A, 33E70M, 33E70M, 40E72E, FD-22A, RX-16M
0202967
0202967 SCREW
20R69B, 20R70C, 20R71S, 20R72R, 20R73A, 25E72R, 25E73A, 25E74M, 25E75B, 25E76E, 25R69B, 25R70C, 25R71S, FD-22A