I have a JTX 270 and i'd like to replace the crankshaft seals. Can this be done with the engine still in the bike or is a complete strip down required?

I'd say that you would need to take the engine out. The cases will need to be split and the crank removed before the seals can be changed. Have the seals failed?

Tony

Isn't there a exploded view of the engine somewhere on GG usa?

Is there any point in replacing the seals without replacing the main bearings, any wear/play in the main bearings is going to wreck the seals in a relatively short period of time.

Is there any point in replacing the seals without replacing the main bearings, any wear/play in the main bearings is going to wreck the seals in a relatively short period of time.

<{POST_SNAPBACK}>

Seals start, at one point, to leak as the seals itself will fade over time.

I can comment that my seals were leaking oil, but the bearings were absolutely 100%. The seals lifespan is much shorter than the lifespan of the mainbearings, so you can get away with only fresh seals.

I had to remove the bearings to get the seals out and by doing so i destroyed the bearings.

But if i cld have safed them no problems with using them again.