1100 runs good for 30-40 min. then bogs/loads up

[dartgtx]

Hello,

I have a 1996 Wave Venture 1100. It runs good for 30-40 min. then bogs/loads up. If I let it cool it runs well for 10-15 miutes then starts loading up again. Any ideas or direction would be greatly appreciated.

Thanks in advance!:emoticonc