Look in the posted links above for the manual on doing the main bearings, hardest part is getting the engine out. Make sure you replace the crank seals with viton versions
Describing how to check the big end for wear is a bit hard but basically hold the crank steady & push & pull on the rod to feel whether there is play up & down rather than side to side. Piston wear really needs proper measuring equipment but if it has gouges or large amount of discoloration below the rings replacement is definitely needed. Piston kits aren't cheap, find out what Beta charges for a 270 piston kit as they are the exact same part made by vertex & may be cheaper
How far from splatshop are you? Chris etc are a wealth of knowledge & should be able to supply everything you need, I've done my bearings before with parts from them & I live on the other side of the world
I live quite far from splatshop but i have already been in contact with Chris and he is super helpful! he seems to know whats going on so i will find out what damage has been done when i take it apart.
I bought it pretty cheap (£900) i knew it sounded rough and would some maintaining , i was looking for a project to get stuck into over the winter time so it will be a good challange
Brand new to motorbikes and trials bike, bought myself a 2004 sherco 290 the other day to mess around on and have a bit of fun.
The bike rides absolutely fine however there is a strange tapping nose coming from the engine that doesn't sound quite right, anyone have any idea what it could be ?
Sherco engine noise?..
in Sherco
Posted
I live quite far from splatshop but i have already been in contact with Chris and he is super helpful! he seems to know whats going on so i will find out what damage has been done when i take it apart.