Service Manual

7. Remove the piston ring from the piston

NOTE: Do not disassemble the

piston/connecting rod further.

Cylinder And Piston Inspection

1. Inspect the cylinder, piston, and piston ring for

wear and damage. Refer to the specifications

and tolerances in Part 1 — General Information.

Replace the cylinder, piston, or piston ring if

necessary.

2. Install the piston ring into the ring groove in

piston and check the side clearance of piston

ring. The maximum side clearance is 0.005 inch

(0.127 mm). Replace the ring and piston if nec-

essary.

NOTE: Units with serial numbers below

910045201 use a piston ring having a width of

0.046 inch (1.16 mm) minimum. Units with serial

numbers 910045201 and greater use a piston

ring having a width of 0.052 inch (1.23 mm) mini-

mum.

3. Inspect the ring groove on piston for carbon

deposits. Clean the ring groove thoroughly.

Remove Crankshaft, And Crankcase

Disassembly, Inspection, And Reassembly

NOTE: Crankcase disassembly and reassembly

requires the use of an arbor press and suitable

drift punches and bearing supports. If these are

not available, do not attempt to repair the crank-

case assembly. Refer to the appropriate parts

manual to order a complete crankcase/crankshaft

assembly.

Crankcase Disassembly

1. Using arbor press, press the crankshaft and

thrust washer out of crankcase.

DISASSEMBLE ENGINE (cont.)

2.6089.095

2.6089.093

2.6089.094

Arbor Press

DISASSEMBLY, INSPECTION, & REPAIR

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