Right, finally got the new impeller. popped the lower case off, opened the impeller housing and took the old impeller out. Installed the new one and reinstalled the housing.
I tried turning the drive shaft and its very stiff so much so that when I try to pull the pull start ( very very slowly, in neutral, kill cord out and turned off ) it wont budge!!!! So off came the lower case and back to the shed I went.
Took the new impeller out and put the old one back in. Tightend up the housing and turned the drive shaft with my hand with ease. Checked the size of the new impeller and it is identical to the one that came out, same height, width everything.
Is it supposed to be so stiff until the impeller is run in or am I doing something wrong?????
Very confused by this, been in the shed for the past 2 hours scratching my head. If I dont tighten the 4 bolts on the water pump housing then its no problem lol but as soon as I tighten the bolts with the new impeller in it gets tight.
Oh and I've used grease to install the impeller as per the manual instructions