nova rossi

[seaducerpete]

Does any one know the head bolt and back plate bolt sizes on a t21m engine I want to replace the slotted screws with socket head screws

Thanks

 

[tnrcboatracer]

The head bolts for the LS and SS are M3.5-0.6mm and the backplate/carb M2.6-0.45mm. Be careful because a 2.5mm screws have the same pitch and will thread into the backplate. But they will pull the threads when you attempt to torque them. I have plenty of the backplate and carb screws in stock, but my supply of 3.5mm head screws dried up several years ago.

Jon