Need to know in detail how to set tappets
Not Clear On Model. Is It 1975 Triumph 750 Trident 3 Cylinder?
SOURCE: Triumph Trident T150 1972
Check out abebooks.com , I just had a quick look and there were a couple avaliable ex UK
SOURCE: rattle nosie on tappets on engine start up,do
Sometimes a dirty oil filter will cause lack of oil to the top end at startup.
As soon as the oil warms, it flows better and faster and hence the noise goes away after warm up.
If you need valves adjusted, the motor must be at TDC on compression stroke(both valves closed)
The motor must be cold do not try to adjust the valve clearance on a warm engine.
On TDC, pull the valve covers and check the clearance on the intake and exhaust valves by inserting a feeler gauge under the tappet.
INTAKE should be : .03-05mm
EXHAUST should be .05-.08 mm
Im sure you don't need a valve adjustment. but if you do: Put Engine on TDC
Loosen the locknut with a 9 or 10 mm wrench, stick the feeler gauge under the tappet, and tighten the little square tipped valve adjuster screw clockwise until you feel friction on the feeler guage.
Enough friction that the feeler gauge feels tight but you can still slide it back and forth.
Not carefully tighten the locknut. Check the feeler guage during tightening to make sure it didn't get too tight or too loose. Once you set the clearance, move to the next valve, and repeat the process using the other feeler guage.
Once both are done put the covers back on and your done,
NOTE: You may have to remove seat, gas tank, airbox, and side covers to get to the covers.
SOURCE: Honda CRF 150X tappet settings
.003 for the intake and .005 for the exhaust should do nicely.
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