Yamaha F350B - Disassembling the Cylinder Block

7-72
Cylinder block
Disassembling the cylinder block
1. Remove:
• Crankcase
• Thrust bearing
2. Remove:
• Piston and connecting rod assembly
a. Remove the connecting rod caps “1”, and
then remove the crankshaft pin bearings
“2”, piston and connecting rod assemblies
“3”.
TIP:
• To prevent mixing the piston and connecting
rod assemblies “3” and connecting rod caps
“1”, mark each with an identification number
“a” of the corresponding cylinder.
• Mark each connecting rod and connecting
rod cap with mark “b” on the side facing to-
ward the flywheel magneto end of the crank-
shaft.
• Make sure to keep the parts in the order of re-
moval.
3. Remove:
• Crankshaft “1”
• Crankshaft journal bearing “2”
• Thrust bearing “3”
• Oil seal “4”
TIP:
Make sure to keep the parts in the order of re-
moval.
4. Remove:
• Collar “1”
2
1
2
3
b
a
A. Worldwide
B. USA and Canada
2
2
2
2
4
3
3
1
1
2
3
4
A
1
5
6
7
B