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Scooters - 125 to 300 => People GT 300i => Topic started by: Faber32 on August 25, 2025, 09:43:27 AM
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Hi everyone. I'm about to do a new head gasket and I have a doubt about the mounting of the tensioner. Is it correct that I have to unscrew the central hex screw (red arrow in the pic) to get access to a flat screwdriver screw that has to be turned to make the piston retract before installing it?
If I understood correctly, if I mount it as it is, i.e. with the piston all the way out, I'd damage the timing system.
Thank you for help :-)
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mine was clearly detailed in my service manual (for S200)...there was a certain procedure to follow but I can't recall as it's been a few years. Do you own a service manual for your scoot?
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Thank you. Yes I have the official service manual but it's not explained anywhere. Maybe I should check your service manual at this point.
From what I've learnt on Youtube, there are two kinds of tensioners. The ones with a long spring that comes off once you remove the central screw, and the other ones with a flat screw deep inside tu be turned clockwise. I suppose mine is of the second kind but I have no confirmation about that
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If you have the type (see pic) YES, flat screwdriver, "unlock", push up, and "lock".
If you have "hexagonal" type, screw out, springcoil out, then assamble on the chain
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Thanks Ruffus, very useful. I have the hex kind, so with a spring. Now I know! :D