Service Manual

6
Engine Specifications
Part
Item
Standard
Service Limit
Engine
Operating RPM
3350 – 3450 RPM
－
Idle RPM
1700 – 2000 RPM
－
Cylinder Head
Warpage
－
0.00393” (0.10 mm)
Cylinder
Sleeve Taper / Out of Round
(Inside Diameter)
3.6220” - 3.6224” (92-92.01 mm)
3.6259” (92.10 mm)
Piston
Skirt Outside Diameter
3.620 - 3.621” (91.96-91.975 mm)
3.6196” (91.940 mm)
Cylinder Clearance
0.00098 - 0.0017” (0.025-0.045 mm)
0.0032” (0.081 mm)
Piston Pin Bore Inside Diameter
0.7870 - 0.7877” (20.002-20.008 mm)
0.7879” (20.01 mm)
Piston Pin Clearance
0.00016 - 0.00063” (0.004-0.016 mm)
0.0011” (0.029 mm)
Piston Pin
Outside Diameter
0.7871 - 0.7873” (19.992-19.998 mm)
0.7834” (19.9 mm)
Piston Rings
Ring To Groove (Top and Middle)
0.00079 - 0.00236” (0.02-0.06 mm)
0.00433” (0.11 mm)
End Gap (Top and Middle)
0.0059 - 0.0118” (0.15-0.30 mm)
0.0137” (0.35 mm)
Width (Top and Middle)
0.046 - 0.0468” (1.17-1.19 mm)
0.0433” (1.10 mm)
Width (Oil Ring)
0.11 - 0.126” (2.8-3.2 mm)
0.1063” (2.7 mm)
Connecting Rod
Small End Inside Diameter
0.79 - 0.788” (20.07-20.018 mm)
0.7881” (20.02 mm)
Big End Inside Diameter
1.4179 - 1.4183” (36.015-36.025 mm)
1.4185” (36.03 mm)
Big End Oil Clearance
0.00157 - 0.00248” (0.04-0.063 mm)
0.0047” (0.12 mm)
Big End Side Clearance
0.00079 - 0.0138” (0.02-0.35 mm)
0.00157” (0.4 mm)
Crankshaft
Crankpin Outside Diameter
1.417 - 1.4165” (35.966-35.981 mm)
1.415” (35.946 mm)
Valve
Clearance (cold) (Intake)
0.0039” (0.10 mm)
－
Clearance (cold) (Exhaust)
0.0059” (0.15 mm)
－
Stem Diameter (Intake)
0.2584 - 0.2590”(6.565-6.58 mm)
0.2579” (6.550 mm)
Stem Diameter (Exhaust)
0.2577 - 0.2583” (6.545-6.56 mm)
0.2571” (6.530 mm)
Valve Guides
Inside Diameter (Intake, Exhaust)
0.2362 - 0.2604” (6.0-6.615 mm)
0.2606” (6.620 mm)
Stem to Guide Clearance (Intake)
0.00079 - 0.00197” (0.02-0.05 mm)
0.0047” (0.12 mm)
Stem to Guide Clearance (Exhaust)
0.00157 - 0.00275” (0.04-0.070 mm)
0.00669” (0.17 mm)
Valve Seat
Seat Width
0.03149 - 0.0393” (0.8-1.0 mm)
0.0591” (1.5 mm)
Valve Spring
Free Length
1.555 - 1.594” (39.5-40.5 mm)
1.535” (39.0 mm)
Camshaft
Height (Intake)
1.282 - 1.284” (32.563-32.603 mm)
1.276” (32.40 mm)
Height (Exhaust)
1.262 - 1.264” (32.049-32.099 mm)
1.256” (31.9 mm)
Journal (Bearing)
0.6298 - 0.6293” (15.996-15.984 mm)
0.6266” (15.916 mm)
Crankcase Cover
Camshaft Hole Diameter
0.6299 - 0.6306” (16.0-16.018 mm)
0.6338” (16.1 mm)
Crankshaft Hole Diameter
2.8330 - 2.8338” (71.949-71.979 mm)
2.8366” (72.05 mm)
Spark Plug
Gap
0.0275 - 0.0314” (0.7-0.8 mm)
－
Ignition Coil
Resistance (Primary)
1.0-1.6 Ω
－
Resistance (Secondary)
10.5 KΩ +/- 15%
－
Gap to Flywheel
0.011 - 0.019” (0.3-0.5 mm)
－