SPECS · PICS · REVIEWS · RATING
SPECS · PICS · RATING
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87 Yamaha TT 225 discussion forum:RE: Fixit |
| RE: Fixit |
| Chuck said 2010-01-12 18:11 |
| Valve clearance (cold) Intake 0.05 – 0.10 mm (0.0020 – 0.0039 in) Exhaust 0.10 – 0.15 mm (0.0039 – 0.0059 in) EAS20471 ENGINE ADJUSTING THE VALVE CLEARANCE The following procedure applies to all of the valves. NOTE: Valve clearance adjustment should be made on a cold engine, at room temperature. When the valve clearance is to be measured or adjusted, the piston must be at top dead center (TDC) on the compression stroke. 1. Remove: Fuel tank Refer to “FUEL TANK” on page 6-1. 2. Remove:Intake tappet cover “1” Exhaust tappet cover “2” Camshaft sprocket cover “3” 3. Remove:Spark plug cap Spark plug 4. Remove:Timing mark accessing screw “1” Crankshaft end cover “2” 5. Measure:Valve clearance Out of specification Adjust. a. Turn the crankshaft counterclockwise. b. When the piston is in the compression stroke, align camshaft sprocket mark “a” with cylinder head mark “b”. This is the Top Dead Center (TDC). c. Make sure that generator rotor mark “c” aligns with generator rotor cover mark “d”. d. Measure the valve clearance using special thickness gauge “1”. Out of specification → Adjust. Valve clearance (cold) Intake 0.05 – 0.10 mm (0.0020 – 0.0039 in) Exhaust 0.10 – 0.15 mm (0.0039 – 0.0059 in) Special thickness gauge 90890-01399 1 Timing Chain:Timing chain tensioner a. Push down the timing chain tensioner rod end by your finger, and fully wind up the tensioner clockwise using a small flat-blade screwdriver “1” . NOTE: The timing chain tensioner rod must be held by the flat-blade screwdriver until the timing chain tensioner bolt is tightened. Timing chain tensioner bolt 10 Nm (1.0 m•kg, 7.2 ft•lb) Timing chain tensioner cap bolt 8 Nm (0.8 m•kg, 5.8 ft•lb) Send me your e-mail address and I´l send you the manual in PDF format. Chuck |
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