Toro LC175FDS, Service Manual

Page: 10 / 48

6
Engine Specifications - 265cc / 175FDS
Part Item Standard Service Limit
Cylinder Sleeve Inside Diameter 2.953 -
2.954” (75.015-75.025 mm) 2.959” (75.17 mm)
Piston
Skirt Outside Diameter 2.951 -
2.952” (74.970-74.980 mm) 2.939” (74.65 mm)
Clearance to Cylinder 0.00059 -
0.002” (0.015-0.052 mm) 0.0047” (0.12 mm)
Piston Pin Bore Inside Diameter 0.7087 -
0.7089” (18.002-18.008 mm) 0.7103” (18.042 mm)
Piston Pin Clearance 0.000078 -
0.00055” (0.002-0.014mm) 0.0031” (0.08 mm)
Piston Pin Outside Diameter 0.7083 -
0.7085” (17.992-17.998 mm) 0.7067” (17.95 mm)
Piston Rings
Ring To Groove (Top and Middle) 0.00059 -
0.00177” (0.015-0.045 mm) 0.0059” (0.15 mm)
End Gap (Top and Middle) 0.0079 -
0.0157” (0.2-0.4 mm) 0.0394”(1.0 mm)
End Gap (Oil Ring) 0.0079 -
0.0275” (0.2-0.7 mm) 0.0394” (1.0 mm)
Width (Top and Middle) 0.077 -
0.078” (1.97-1.99 mm) 0.069” (1.75 mm)
Connecting Rod
Small End Inside Diameter 0.7088 -
0.7093” (18.006-18.017 mm) 0.7114” (18.07 mm)
Big End Inside Diameter 1.3 - 1.30
03” (33.02-33.03 mm) 1.3019” (33.07 mm)
Big End Oil Clearance 0.00157 -
0.00259” (0.04-0.066 mm) 0.00472” (0.12 mm)
Big End Side Clearance 0.0039 -
0.0275” (0.1-0.7 mm) 0.0394” (1.0 mm)
Crankshaft Crankpin Outside Diameter
1.2979” - 1.2984” (32.966-32.981 mm) 1.296” (32.92 mm)
Valves
Clearance (cold) (intake)
0.0059” (0.15 mm)
－
Clearance (cold) (exhaust)
0.0078” (0.20 mm)
－
Stem Diameter (intake) 0.258 -
0.259” (6.565-6.580 mm) 0.2535” (6.44 mm)
Stem Diameter (exhaust) 0.2576 -
0.2582” (6.545-6.560 mm) 0.252” (6.40 mm)
Valve Guides
Inside Diameter (intake, exhaust) 0.2598 -
0.2604” (6.60-6.615 mm) 0.2624” (6.66 mm)
Stem to Guide Clearance (intake) 0.00039 -
0.00145” (0.01-0.037 mm) 0.000393” (0.10 mm)
Stem to Guide Clearance (exhaust) 0.00197 -
0.00303” (0.05-0.077 mm) 0.0047” (0.12 mm)
Valve Seats Seat Width 0.0315 -
0.0394” (0.8-1.0 mm) 0.0787” (2.0 mm)
Valve Springs Free Length
1.535” (39 mm) 1.476” (37.5 mm)
Camshaft
Height (intake) 1.2455 -
1.2501” (31.636-31.754 mm) 1.234” (31.35 mm)
Height (exhaust) 1.2470 -
1.2533” (31.674 -31.834 mm) 1.2342” (31.35 mm)
Outside Diameter (bearing) 0.6285 -
0.6292” (15.966-15.984 mm) 0.6267” (15.92 mm)
Crankcase Cover Camshaft Hole Diameter 0.6299 -
0.6306” (16.0-16.018 mm) 0.6318” (16.05 mm)
Spark Plug Gap 0.0275 -
0.0314” (0.7-0.8 mm)
－
Stator
(12V-37.5W)
Resistance 0.21-
0.31Ω
－
Ignition Coil
Resistance (primary) 1.0-1.6
Ω
－
Resistance (secondary)
10.5 KΩ +/- 15%
－
Gap to Flywheel 0.011-
0.019” (.3-.5 mm)
－
Carburetor Float Height
0.539” (13.7mm)