RE: rebuilding my lst
You will have to replace the p/s with the same one.And as far as when to rebuild,do it when your compression is low.How you can check this is buy turning the fly wheel when the engine is cold if it turns easy all the way around its time to rebuild if it has any resistance its still good make sure the glow plug is in when you do it.you can usally get around 7-10 gallons or maybe more if you keep it tuned right