DTO wrote: Mon Feb 08, 2021 9:24 am Data- ped parts have genuine Piaggio 250/300 belts on offer for £44.95 .
https://www.pedparts.co.uk/product/7506 ... a-250300cc
I ordered one as my gts300 is 7 years old now on original belt but only done 5000km .
Do you think the rollers/sliders should be changed too or can I get away with just the belt ?
Brilliant price on an oem belt! Well done. Yes, you can get away with just the belt. But really I'd probably change out the rollers and variator back plate guides too as they are so little money to do and you are going to have all the parts laying on the ground anyway. Although I suspect your rollers will be in fine condition at 5000km. Keep them as spares. I actually change out my belt, rollers and guides all at the same time of 7500-8000 miles. My rollers are still fine at 6250miles so letting them go a bit longer is fine (6250 is the recommended change out point, but you probably know that). But although I change mine at 7500-8000 miles, not everyone will find their rollers are still ok at that mileage. It just depends how you ride the bike and what sort of use the bike is put to. If you do lots of commuting in town with lots of stop start then the rollers will wear more quickly. If doing longer runs with less town work the rollers can still be in very good condition at 8-9000 miles. Given that Piaggio says the rollers and guides should be changed out at 6250 miles routinely and then the belt at 9000 miles, that's two lots of separate transmission work. So in view of my rollers always still being fine at 6250 miles, I decided to change out belt, rollers and guides all at 7500-8000 miles. So doing the job just once, therefore half the labour and you get a bike that is always performing at it's best. It also creates less wear on the variator shaft threads, a common cause of scooters with auto tranny being dumped when those threads fail due to wear. Many GTS250/300 bikes get to 75-80000+ miles only to find the crank threads are worn out and you cannot secure the variator nut. It usually means a complete strip and new crankshaft. Doing it my way halves the crankshaft thread wear at the variator. However, even replacing the crank on the GTS300 is not hard if you can diy fairly competently. The engines are true gems!
