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F01D73W 159° Section 04 ENGINE (2-STROKE) Subsection 06 (ROTARY VALVE) smr2004-Complete Line Up 161
Section 04 ENGINE (2-STROKE) Subsection 06 (ROTARY VALVE) ROTARY VALVE TIMING CAUTION: Never use the ridge molded in crank case as a timing mark. The following tools are required to measure rotary valve opening and closing angles in relation with MAG side piston. F00B0DB 529 035 607 295 000 143 Rotary valve must be set so that timing occurs as follows: ENGINE OPENING BTDC 360 350 340 330 320 310 300 290 280 270 260 250 240 230 220 210 200 19 1 0 2 0 3 0 40 5 0 6 0 7 0 80 9 0 10 0 11 0 12 0 1 3 0 1 4 0 15 0 1 6 0 17 0 18 0 19 0 20 0 21 0 2 20 23 0 2 4 0 2 50 2 6 0 2 7 0 2 8 0 2 9 0 3 0 0 3 10 3 2 0 3 30 34 0 35 0 36 0 0 180 170 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 TIMING CLOSING ATDC <strong>717</strong> 147° ±5 65.5° ±5 787 RFI 147° ±5 63.5° ±5 Timing Procedure The following timing procedure example uses these specifications: OPENING: 147° BTDC CLOSING: 65° ATDC Proceed as follows: – Turning crankshaft, bring MAG side piston to Top Dead Center using a TDC gauge. F01D2IA 1. Bring piston to TDC – For opening mark, first align 360° line of degree wheel with BOTTOM of MAG side inlet port. Then, find 147° line on inner scale of degree wheel and mark crankcase at this point. F01D3DC 2 1 147° OPENING MARK Step 1: Bottom of MAG inlet port. Align 360° line of degree wheel Step 2: Find 147° on inner scale of degree wheel and mark here NOTE: Do not rotate the crankshaft. – For closing mark, first align 360° line of degree wheel with TOP of MAG side inlet port. Then, find 65° line on outer scale of degree wheel and mark crankcase at this point. 162 smr2004-Complete Line Up 1
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TOP END 717 Engines Molykote 111 F1
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947 DI Engines 26 10 N•m (89 lbf
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2 3 1 F06D16B RAVE VALVE CLOSED 1.
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F06D0QA 1 1. Remove screws Remove R
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F06D28A 1. Remove O-ring 1 Remove s
Page 11 and 12: Remove cylinder head no. 2. If shel
Page 13 and 14: F00B0KA 1 1. Tool cut-out toward bo
Page 15 and 16: A F01D8AA 2 1. Measuring perpendicu
Page 17 and 18: F00B09A 2 1. Use the micrometer to
Page 19 and 20: F01D8KA 1 3 2 1. Sliding valve 2. O
Page 21 and 22: - Replace the inner halves by the a
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Page 25 and 26: F01D45A 717 ENGINES 1. Aligning cyl
Page 27 and 28: Apply Molykote 111 on threads of cy
Page 29 and 30: Compare the obtained value with the
Page 31 and 32: Section 04 ENGINE (2-STROKE) Subsec
Page 61: Section 04 ENGINE (2-STROKE) Subsec
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717 Engines

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