Late Chimaera Heater Blower

[Malcster]

Hi guys,

Recently the blower on my heater has started making a deep rumble, and a rustling every now and again.

I'm guessing some leaves have made their way into the fan somehow.

Is there an easy way to remove debris from the fan / blower motor area?

Would you know where is it located / how is it accessed?

Its a 2000 Chim 400.

Thanks in advance!