TOHATSU BFT 250A, Service Manual

Page: 73 / 639

3-15
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MAINTENANCE
VALVE CLEARANCE
• Valve clearance inspection and adjustment must be
performed with the engine cold.
1. Remove the following:
– Cylinder head cover (page 14-19)
– Timing belt covers (page 14-6)
2. Manually turn the crankshaft pulley [1] clockwise,
and align the No. 1 TDC (top dead center) marks [2]
on both timing belt driven pulleys [3] with the marks
[4] on the timing belt back covers [5].
• Do not turn the crankshaft pulley counterclockwise.
3. With the engine in the position described in step 2,
check the intake and exhaust valve clearance on
No. 1 cylinder with a feeler gauge [1] and adjust if
necessary.
[5]
[2]
[3]
[4]
[1]
[2]
[3]
[4]
[5]
[3]
[3]
VALVE CLEARANCE:
IN: 0.20 – 0.24 mm (0.008 – 0.009 in)
EX: 0.28 – 0.32 mm (0.011 – 0.013 in)
[1]