| Measuring point | Tolerance (new) | Wear Limit | |
| 1. Cylinder seat depth in cylinder head | 9.500-9.600 mm (0.374-0.378 in) | 10.000 mmm (0.3937 in) |  |
| 2. Cylinder bore ovality, B minus A | n/a | 0.020 mm (0.0008 in) |  |
| 3. Piston to cylinder clearance | 0.041-0.059 mm (0.0016-0.0023 in) | 0.20 mm (0.008 in) | |
| 4. Piston ring side clearance | Ring 1 0.75-0.107 mm (0.0030-0.0042 in) | 0.25-0.30 mm (0.0098-0.0118 in) | |
| | Ring 2 0.45-0.072 mm (0.0018-0.0028 in) | 0.25-0.30 mm (0.0098-0.0118 in) | |
| 5. Piston ring side clearance Oil ring | 0.025-0.052 mm (0.0010-0.0020 in) | 0.25-0.30 mm (00098-0.0118 in) | |
| 6. Piston ring gap | 0.15-0.30 mm (0.0059-0.0118 in) | 0.95 (0.0374) |  |
| 7. Weight differential between pistons in one engine | 5 g (0.176 oz) | n/a | |
| 8. Weight differential between connecting rods in one engine | 6 g (0.211 oz) | n/a | |
| 9. Piston pin to connecting rod clearance | 0.012-0.028 mm (0.0005-0.0011 in) | 0.042 mm (0.0017 in) |  |
| 10. Crank pin to connecting rod clearance | 0.040-0.092 mm (0.0016-0.0036 in) | 0.130 mm (0.0051 in) |  |
| 11. Crankshaft to main bearing clearance (bearings installed) | a. Bearing 1. 0.028-0.078 mm (0.0011-0.0031 in) | 0.170 mm (0.0067 in) |  |
| | b. Bearing 2 and 3. 0.046-0.100 mm (0.0018-0.0039 in) | 0.170 mm (0.0067 in) | |
| | c. Bearing 4. 0.040-0.104 mm (0.0016-0.0041 in) | 0.170 mm (0.0067 in) | |
| 12. Crankshaft runout at Bearing 2 and 4 (Bearing 1 and 3 on V -blocks) | max. 0.020 mm (0.0008 in) | 0.030 mm (0.0012 in) |  |
| 13. Crankshaft to crankshaft thrust bearing | 0.13-0.18 mm (0.0051-0.0071 in) | 0.3 mm (0.0118 in) |  |
| 14. Main bearing journal ovality | | 0.020 mm (0.0008 in) | |
| 15. Connecting rod journal ovality | | 0.020 mm (0.0008 in) | |
| 16. Crankcase bores for main bearings (dia) | a. Bearing 1-3 60.235-60.245 mm (2.3715-2.3718 in) | |  |
| | b. bearing 4. 50.000-50.025 mm (1.9685-1.9695 in) | | |
| 17. Crankshaft pulley runout | vertical. A max. 0.250 mm (0.0098 in) | |  |
| | B max. 0.250 mm (0.0098 in) | | |
| 18. Crankcase bore for camshaft (diam) | 24.020-24-041 mm (0.9457-0.9465 in) | 24.070 mm (0.9476 in) | |
| 19a. Camshaft bearing clearance | 0.020-0.054 mm (0.0008-0.0021 in) | 0.120 mm (0.0047 in) |  |
| 19b. Camshaft end play at thrust end | 0.040-0.080 mm (0.0016-0.0031 in) | 0.100 mm (0.0039 in) |  |
| 19c. Camshaft center bearing runout (camshaft mounted on centers) | 0.020 mm (0.0008 in) | 0.025 mm (0.0010 in) |  |
| 20a. Timing gear run out (gear bolted and pinned to camshaft): Lateral runout | max. 0.100 mm (0.0039 in) | |  |
| 20b. Timing gear runout: Gear Backlash | 0.015-0.040 mm (0.00060-0.0016 in) | | |
| 20c. Timing gear runout: Vertical runout | 0.025 mm (0.0010 in) | 0.040 mm (0.0016 in) |  |
| 21a. Flywheel: Lateral runout measured at starter ring (A): | max. 0.300 mm (0.0118 in) | |  |
| 21b. Flywheel: Lateral runout, measured in clutch plate recess (B): | max 0.040 mm (0.0016 in) | |  |
| 21c. Flywheel: Vertical runout, measured at starter ring (C): | max 0.020 mm (0.0008 in) | |  |
| 21d. Flywheel: Vertical runout, measured in clutch disk recess (D): | max 0.100 mm (0.0039 in) | |  |
| 21. Flywheel: Unbalance, measured with crankshaft | max 0.5 cmg (0.069 oz/in) | | |
| 21e. Flywheel: Diameter of oil sealing surface at hub (E): | 59.000-60.100 mm (2.3583-2.3661 in) | 59.700 mm (2.3403 in) |  |
| 21f. Flywheel: Depth of recess to web (F): | 6.3-6.85 mm (0.2480-0.2697 in) | |  |
| 21g. Flywheel: Web thickness (G): | 6.3-6.85 mm (0.2480-0.2697 in) | min 4.800 mm (0.1890 in) |  |
| 21h. Flywheel: Width of oil sealing area (H): | 9.250-10.250 mm (0.3642-0.4035 in) | |  |
| 21i. Flywheel: Matching starter ring gear teeth | | max. 2.000 mm (0.0787 in) | |
| 22a. Valve stem diameter: intake valve | 9.990-9.978 mm (0.3933-0.3928 in) | 9.940 mm (0.3701 in) | |
| 22b. Valve stem diameter: exhaust valve | 9.970-9.958 mm (0.3925-0.3920 in) | 9.940 mm (0.3701 in) | |
| 23a. Valve guide to valve stem clearance. a) Valve guild inside diameter | 10.025-10.040 mm (0.3947-0.3953 in) | 10.070 mm (0.3965 in) | |
| 23b. Valve guide to valve stem clearance. b) Intake valve clearance in bore | 0.035-0.060 mm (0.0014-0.0024 in) | 0.120 mm (0.0047 in) |  |
| 23c. Valve guide to valve stem clearance. c) Exhaust valve clearance in bore | 0.055-0.080 mm (0.0022-0.0031 in) | 0.120 mm (0.0047 in) | |
| 24a. Valve Seat: Intake seat width a) | 1.25 +/- 0.15 (0.0492 +/- 0.0059 in) | |  |
| 24b. Valve Seat: Exhaust seat width a) | 1.55 +/- 0.15 (0.0610 +/- 0.0059 in) | | |
| 24c. Valve Seat: Lateral Runout of valve head to seat | 0.010 (0.0004 in) | | |
| 25a. Valve Spring length decompressed | 47 mm (1.85 in) | | | |
| 25b. Valve Spring length installed, intake | 41 mm (1.61 in) | |  |
| 25c. Valve Spring length installed, exhaust | 40.5 mm (1.59 in) | | |
| 25d. Valve Spring pressure when compressed to 41 mm length | 36 +/- 1.5 kp (79 +/- 3.3 lbs) | | |
| 25e. Valve Spring pressure when compressed to 30.1 mm length | 97 +/- 2.5 kp (213 +/- 5.5 lbs) | |  |
| 26. Valve clearance in cold engine | intake:
0.10 mm (0.004 in) | | |
| | exhaust:
0.15 mm (0.006 in) | | |
| 27a. Rocker Arm | inside diameter:
16.000-16.018 (0.6299-0.6306) | 16.145 (0.6313) | |
| | shaft outside diameter:
15.984-15.973 (0.6293-0.6289) | 15.965 (0.6285) | |
| | arm to shaft clearance:
0.016-0.045 (0.0006-0.0018) | 0.070 (0.0028) |  |
| 28. Valve Lifter | bore in crankcase (diam):
12.000-12.018 (0.475-0.4731) | 12.060 (0.4748) | |
| | diameter:
11.966-11.984 (.4711-0.4718) | 11.945 (0.4703) | |
| | to crankcase bore clearance:
0.016-0.052 (0.0006-0.0020) | 0.100 (0.0039) |  |
| 29. Oil Pressure | warm engine, idle (min):
0.5 atm (7.3 psi) | | |
| | warm engine at 2,500 RPM (min):
3.0 atm (44 psi) | 2.0 atm (29 psi) | |
| 30. Oil Pump | Pump gears extend beyond housing (no gasket):
0.06-0.125 (0.0024-0.0049) | |  |
| | Thickness of compressed gasket (A):
0.16 (0.0063) | | |
| | Gear end play, with gasket and cover installed (B):
0.035-0.10 (0.0014-0.0039) | 0.20 (0.0079) | |
| | Gear backlash:
0.030-0.080 (0.0012-0.0031) | | |
| 31. Spring for pressure releif valve in crankcase and timing gear cover | Free length:
66 mm (2.6 in) | | |
| | Spring pressure when compressed to 49 mm:
4.7 kp +/- 7% (10.4 lbs +/- 7%) | |  |
| | Spring wire cross section (diam):
1.4 (0.55) | | |
| 32. Oil Pressure switch opens at pressure of: | 0.3-0.6 atm (4.4-8.8 psi) | |
