Service Manual

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 - 1.3003” (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)
1.0-1.6Ω
－
Resistance (secondary)
10.5 KΩ +/- 15%
－
Gap to Flywheel
0.011- 0.019” (.3-.5 mm)
－
Carburetor
Float Height
0.539” (13.7mm)