Hard starting K241

[Cubcadet_107]

Originally Posted by Merk

Early IH Cub Cadet 100s did not have a compression release in them. My 100 with serial number 84xxx had a 2 piece cam and no compression release in the engine.

That is a good point actually. The best way to check this other than by serial number is to pull the cam gear cover and have a look.

[Jim in SC]

Originally Posted by Merk

Early IH Cub Cadet 100s did not have a compression release in them. My 100 with serial number 84xxx had a 2 piece cam and no compression release in the engine.

My SN is 92562, built a little after yours, but still in the same year, unless I'm reading the chart wrong. Does that qualify as an early CC 100?

[Jim in SC]

Originally Posted by Billy-O

Hopefully, one or more of the earlier suggestions will work! If it doesn't, perhaps it's worth checking that wiring connections are good! Bright and tight! Especially the ground. The engine should be grounded well!

Good advice! I did clean all of the connections and mating surfaces on this the tractor this engine sits in now (a 106) when I refreshed it a few years ago, but it's worth checking again now, thanks. I learned this lesson well when I did the refresh on my Farmall H with the 6 volt system. The 6 volt is VERY unforgiving of bad electrical connections!

[finsruskw]

FYI and FWIW

#92562 was built in August of '64 which puts it smack in the middle of series 2 and the 100's production dates of Aug '63 to Aug '65 when 39,042 100's were built along with some 22,600 70's.

Starting at #65,468 through 127,160

[TheSaturnV]

Second CC107's suggestion. Pull the cam cover and you should be able to see the comp release mechanism. It would explain a lot since the rollover could have knocked the CR spring out of position.

Are you sure your S/G is working up to capacity? They can spin freely without a belt but then bog down under load. This can be anything from worn/gummy bearings/bushings to worn brushes, dirty commutator, loose/worn wires, etc.

[Jim in SC]

Originally Posted by TheSaturnV

Second CC107's suggestion. Pull the cam cover and you should be able to see the comp release mechanism. It would explain a lot since the rollover could have knocked the CR spring out of position.

Are you sure your S/G is working up to capacity? They can spin freely without a belt but then bog down under load. This can be anything from worn/gummy bearings/bushings to worn brushes, dirty commutator, loose/worn wires, etc.

Thanks - I guess I'll be pulling the cover off and checking the CR spring as well. As to the S/G - i switched it back and forth with the 106 engine (and vice versa) and both S/G's worked on the 106. I'll check the CR, valves, and timing first, then give a re-look at the S/G.

I appreciate all the input!

[Jim in SC]

Originally Posted by finsruskw

FYI and FWIW

#92562 was built in August of '64 which puts it smack in the middle of series 2 and the 100's production dates of Aug '63 to Aug '65 when 39,042 100's were built along with some 22,600 70's.

Starting at #65,468 through 127,160

Thank you!

[Jim in SC]

Originally Posted by Cubcadet_107

Pull the valve spring cover off and rotate the engine by hand while watching inside there. If its functioning correctly, you will be able to see the exhaust valve be bumped open just a little bit during the compression stroke.

While you're in there its a good time to check the valve clearances too, as if the exhaust valve clearance is too large the compression release won't work.

I pulled the valve cover and the cam cover. I can see that there is a spring on the ACR next to the cam gear, but dang, it's tough to move the engine through the compression cycle! Makes me think that either the valve is not adjusted right or the spring is loose or weak. I found a very good video explanation of the ACR on youtube - here's a link: https://www.youtube.com/watch?v=M_N5...dMetalShopTime

I ran out of time today, so I'll have to wait a few days to try adjusting the valve clearance. If that doesn't work, I'll pull the engine (again), drop the oil pan, and see about just replacing the spring. Just one spring, right?

[finsruskw]

Pull the plug out!!

[Jim in SC]

Originally Posted by finsruskw

Pull the plug out!!

Hahaha! Okay. I knew to do that, this was just a quick run through.