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I’ve noticed it’s very hard to crank the engine while pulling the rope. Lot of resistance. You have to really hold it down while trying to start it. Is this normal?

4-mix Engine.

Depending its usage and age it might time to adjust the valves as the ACR might not be working due excessive valve clearances. To done you need to pickup 4180 007 1005 valve setting kit which an unique .004" feeler gauge and gaskets.

I took the plug out and it’s much easier. I’ll get the kit. Valves are pretty loose.

I pointed the fly wheel arrow to the ignition module screw (tdc). Didnt have a feeler gauge so I tightened them down (no movement), and backed the nuts off approximately 1/8”. Still pulls a little hard but not like it was. What else to check for? I ordered a gauge.