Triumph Forum: Triumph Rat Motorcycle Forums - View Single Post - '68 T120 Bonneville Starting Troubles
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post #4 of (permalink) Old 09-04-2018, 02:36 PM
Formula Extreme
Senior Member
Join Date: Jan 2012
Location: London
Posts: 849
The tappets definitely need to be adjusted after the rebuild the new parts will nave slightly different tollerances, if a valve is held open even slightly you will find it difficult to start the engine.
You will also need to re adjust them when you re-torque the cylinder head bolts.

On the T120 engine it is a little tricky to set them, but there are some useful tips on this previous thread.

best of luck

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